From 7fa4961b327464448035d00466a2140ae2519c1f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Luca=20B=C3=B6sch?= <luca.boesch@bfh.ch>
Date: Mon, 8 Jul 2024 08:38:59 +0200
Subject: [PATCH] Short array syntax.

---
 absentee.php                                  |  36 +-
 attendance.php                                |  36 +-
 automark.php                                  |   6 +-
 backup/moodle2/backup_attendance_stepslib.php |  30 +-
 ...restore_attendance_activity_task.class.php |  16 +-
 .../moodle2/restore_attendance_stepslib.php   |   2 +-
 classes/analytics/indicator/activity_base.php |   2 +-
 classes/attendance_webservices_handler.php    |  24 +-
 classes/calendar_helpers.php                  |   6 +-
 classes/customfield/session_handler.php       |   4 +-
 classes/event/attendance_taken.php            |   6 +-
 classes/event/attendance_taken_by_student.php |   6 +-
 .../course_module_instance_list_viewed.php    |   6 +-
 classes/event/report_viewed.php               |   4 +-
 classes/event/session_added.php               |   4 +-
 classes/event/session_deleted.php             |   4 +-
 classes/event/session_duration_updated.php    |   4 +-
 classes/event/session_ip_shared.php           |   6 +-
 classes/event/session_report_viewed.php       |   8 +-
 classes/event/session_updated.php             |   6 +-
 classes/event/sessions_imported.php           |   6 +-
 classes/event/status_added.php                |   4 +-
 classes/event/status_removed.php              |   4 +-
 classes/event/status_updated.php              |   4 +-
 classes/form/addsession.php                   |  42 +-
 classes/form/addwarning.php                   |  10 +-
 classes/form/duration.php                     |   4 +-
 classes/form/export.php                       |  26 +-
 classes/form/import/marksessions.php          |   6 +-
 classes/form/import/marksessions_confirm.php  |   6 +-
 classes/form/studentattendance.php            |  10 +-
 classes/form/tempmerge.php                    |   2 +-
 classes/form/tempuseredit.php                 |   6 +-
 classes/form/updatesession.php                |  30 +-
 classes/import/marksessions.php               |  24 +-
 classes/import/sessions.php                   |  46 +-
 classes/local/automark.php                    |  12 +-
 classes/local/url_helpers.php                 |   8 +-
 classes/manage_page_params.php                |   2 +-
 classes/notifyqueue.php                       |   2 +-
 classes/observer.php                          |   2 +-
 classes/output/filter_controls.php            |   4 +-
 classes/output/mobile.php                     |  68 +--
 classes/output/password_icon.php              |   2 +-
 classes/output/preferences_data.php           |   2 +-
 classes/output/renderer.php                   | 476 +++++++++---------
 classes/output/report_data.php                |  10 +-
 classes/output/set_selector.php               |   2 +-
 classes/output/take_data.php                  |   6 +-
 classes/output/user_data.php                  |  36 +-
 classes/page_with_filter_controls.php         |   4 +-
 classes/preferences_page_params.php           |   2 +-
 classes/privacy/provider.php                  |  18 +-
 classes/report_page_params.php                |   2 +-
 .../reportbuilder/datasource/attendance.php   |   2 +-
 classes/structure.php                         | 174 +++----
 classes/summary.php                           |  24 +-
 classes/take_page_params.php                  |   2 +-
 classes/task/auto_mark.php                    |  10 +-
 classes/task/clear_temporary_passwords.php    |   2 +-
 classes/task/notify.php                       |  18 +-
 classes/view_page_params.php                  |   2 +-
 coursesummary.php                             |  20 +-
 db/access.php                                 | 148 +++---
 db/events.php                                 |   8 +-
 db/install.php                                |   4 +-
 db/mobile.php                                 |  10 +-
 db/services.php                               |  52 +-
 db/tasks.php                                  |  16 +-
 db/upgrade.php                                |  34 +-
 db/upgradelib.php                             |   4 +-
 defaultstatus.php                             |   4 +-
 export.php                                    |  16 +-
 externallib.php                               | 134 ++---
 import.php                                    |   6 +-
 import/marksessions.php                       |  14 +-
 index.php                                     |  20 +-
 lib.php                                       |  72 +--
 locallib.php                                  | 122 ++---
 manage.php                                    |  14 +-
 messageselect.php                             |  22 +-
 mod_form.php                                  |   4 +-
 password.php                                  |   4 +-
 password_ajax.php                             |   4 +-
 preferences.php                               |   8 +-
 renderhelpers.php                             |   2 +-
 report.php                                    |  10 +-
 resetcalendar.php                             |  12 +-
 sessions.php                                  |  26 +-
 settings.php                                  |  18 +-
 take.php                                      |  10 +-
 tempedit.php                                  |  20 +-
 tempmerge.php                                 |  28 +-
 tempusers.php                                 |  12 +-
 tests/behat/behat_mod_attendance.php          |   2 +-
 tests/external/external_test.php              |  32 +-
 view.php                                      |  26 +-
 warnings.php                                  |  40 +-
 98 files changed, 1158 insertions(+), 1158 deletions(-)

diff --git a/absentee.php b/absentee.php
index 8c632abde9f..205a8a45405 100644
--- a/absentee.php
+++ b/absentee.php
@@ -36,27 +36,27 @@
 if (!empty($category)) {
     $context = context_coursecat::instance($category);
     $coursecat = core_course_category::get($category);
-    $courses = $coursecat->get_courses(array('recursive' => true, 'idonly' => true));
+    $courses = $coursecat->get_courses(['recursive' => true, 'idonly' => true]);
     $PAGE->set_category_by_id($category);
     require_login();
 } else if (!empty($attendancecm)) {
     $cm             = get_coursemodule_from_id('attendance', $attendancecm, 0, false, MUST_EXIST);
-    $course         = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
-    $att            = $DB->get_record('attendance', array('id' => $cm->instance), '*', MUST_EXIST);
-    $courses = array($course->id);
+    $course         = $DB->get_record('course', ['id' => $cm->course], '*', MUST_EXIST);
+    $att            = $DB->get_record('attendance', ['id' => $cm->instance], '*', MUST_EXIST);
+    $courses = [$course->id];
     $context = context_module::instance($cm->id);
     require_login($course, false, $cm);
 } else {
     admin_externalpage_setup('managemodules');
     $context = context_system::instance();
-    $courses = array(); // Show all courses.
+    $courses = []; // Show all courses.
 }
 // Check permissions.
 require_capability('mod/attendance:viewreports', $context);
 
 $exportfilename = 'attendance-absentee.csv';
 
-$PAGE->set_url('/mod/attendance/absentee.php', array('category' => $category, 'id' => $attendancecm));
+$PAGE->set_url('/mod/attendance/absentee.php', ['category' => $category, 'id' => $attendancecm]);
 
 $PAGE->set_heading($SITE->fullname);
 
@@ -80,12 +80,12 @@
     }
 
 }
-$columns = array('coursename', 'aname', 'userid');
-$headers = array(get_string('course'),
+$columns = ['coursename', 'aname', 'userid'];
+$headers = [get_string('course'),
     get_string('pluginname', 'attendance'),
-    get_string('user'));
+    get_string('user'), ];
 
-$extrafields = array();
+$extrafields = [];
 if (!empty($CFG->showuseridentity) && has_capability('moodle/site:viewuseridentity', $context)) {
     $extrafields = explode(',', $CFG->showuseridentity);
     foreach ($extrafields as $field) {
@@ -93,11 +93,11 @@
         $headers[] = get_string($field);
     }
 }
-$columns = array_merge($columns, array('numtakensessions', 'percent', 'timesent'));
-$headers = array_merge($headers, array(
+$columns = array_merge($columns, ['numtakensessions', 'percent', 'timesent']);
+$headers = array_merge($headers, [
     get_string('takensessions', 'attendance'),
     get_string('averageattendance', 'attendance'),
-    get_string('triggered', 'attendance')));
+    get_string('triggered', 'attendance')]);
 
 $table->define_columns($columns);
 $table->define_headers($headers);
@@ -105,7 +105,7 @@
 $table->sortable(true);
 $table->set_attribute('cellspacing', '0');
 $table->set_attribute('class', 'generaltable generalbox');
-$table->show_download_buttons_at(array(TABLE_P_BOTTOM));
+$table->show_download_buttons_at([TABLE_P_BOTTOM]);
 $table->setup();
 
 // Work out direction of sort required.
@@ -130,13 +130,13 @@
 
 $records = attendance_get_users_to_notify($courses, $orderby);
 foreach ($records as $record) {
-    $row = array();
+    $row = [];
     if (!$table->is_downloading($download, $exportfilename)) {
-        $url = new moodle_url('/mod/attendance/index.php', array('id' => $record->courseid));
+        $url = new moodle_url('/mod/attendance/index.php', ['id' => $record->courseid]);
         $row[] = html_writer::link($url, $record->coursename);
 
-        $url = new moodle_url('/mod/attendance/view.php', array('studentid' => $record->userid,
-            'id' => $record->cmid, 'view' => ATT_VIEW_ALL));
+        $url = new moodle_url('/mod/attendance/view.php', ['studentid' => $record->userid,
+            'id' => $record->cmid, 'view' => ATT_VIEW_ALL]);
         $row[] = html_writer::link($url, $record->aname);
 
         $row[] = html_writer::link($url, fullname($record));
diff --git a/attendance.php b/attendance.php
index 4666678f620..c1b4c1cc255 100644
--- a/attendance.php
+++ b/attendance.php
@@ -32,11 +32,11 @@
 $id = required_param('sessid', PARAM_INT);
 $qrpass = optional_param('qrpass', '', PARAM_TEXT);
 
-$attforsession = $DB->get_record('attendance_sessions', array('id' => $id), '*', MUST_EXIST);
+$attforsession = $DB->get_record('attendance_sessions', ['id' => $id], '*', MUST_EXIST);
 $attconfig = get_config('attendance');
-$attendance = $DB->get_record('attendance', array('id' => $attforsession->attendanceid), '*', MUST_EXIST);
+$attendance = $DB->get_record('attendance', ['id' => $attforsession->attendanceid], '*', MUST_EXIST);
 $cm = get_coursemodule_from_instance('attendance', $attendance->id, 0, false, MUST_EXIST);
-$course = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
+$course = $DB->get_record('course', ['id' => $cm->course], '*', MUST_EXIST);
 
 // Require the user is logged in.
 require_login($course, true, $cm);
@@ -58,7 +58,7 @@
 if ($canmark && attendance_session_open_for_students($attforsession) && $attforsession->rotateqrcode == 1) {
     $cookiename = 'attendance_'.$attforsession->id;
     $secrethash = md5($USER->id.$attforsession->rotateqrcodesecret);
-    $url = new moodle_url('/mod/attendance/view.php', array('id' => $cm->id));
+    $url = new moodle_url('/mod/attendance/view.php', ['id' => $cm->id]);
 
     // Check if cookie is set and verify.
     if (isset($_COOKIE[$cookiename])) {
@@ -103,13 +103,13 @@
 
 
 if (!$canmark) {
-    redirect(new moodle_url('/mod/attendance/view.php', array('id' => $cm->id)), get_string($reason, 'attendance'));
+    redirect(new moodle_url('/mod/attendance/view.php', ['id' => $cm->id]), get_string($reason, 'attendance'));
     exit;
 }
 
 // Check if subnet is set and if the user is in the allowed range.
 if (!empty($attforsession->subnet) && !address_in_subnet(getremoteaddr(), $attforsession->subnet)) {
-    $url = new moodle_url('/mod/attendance/view.php', array('id' => $cm->id));
+    $url = new moodle_url('/mod/attendance/view.php', ['id' => $cm->id]);
     notice(get_string('subnetwrong', 'attendance'), $url);
     exit; // Notice calls this anyway.
 }
@@ -124,7 +124,7 @@
 // Check to see if autoassignstatus is in use and no password required or Qrpass given and passed.
 if ($attforsession->autoassignstatus && attendance_session_open_for_students($attforsession) && (empty($attforsession->studentpassword)) || $qrpassflag) {
     $statusid = attendance_session_get_highest_status($att, $attforsession);
-    $url = new moodle_url('/mod/attendance/view.php', array('id' => $cm->id));
+    $url = new moodle_url('/mod/attendance/view.php', ['id' => $cm->id]);
     if (empty($statusid)) {
         throw new moodle_exception('attendance_no_status', 'mod_attendance', $url);
     }
@@ -148,7 +148,7 @@
     if (!empty($attforsession->studentpassword) &&
         $attforsession->studentpassword !== $qrpass) {
 
-        $url = new moodle_url('/mod/attendance/attendance.php', array('sessid' => $id, 'sesskey' => sesskey()));
+        $url = new moodle_url('/mod/attendance/attendance.php', ['sessid' => $id, 'sesskey' => sesskey()]);
         redirect($url, get_string('incorrectpassword', 'mod_attendance'), null, \core\output\notification::NOTIFY_ERROR);
     }
 
@@ -158,14 +158,14 @@
 
     $fromform->status = attendance_session_get_highest_status($att, $attforsession);
     if (empty($fromform->status)) {
-        $url = new moodle_url('/mod/attendance/view.php', array('id' => $cm->id));
+        $url = new moodle_url('/mod/attendance/view.php', ['id' => $cm->id]);
         throw new moodle_exception('attendance_no_status', 'mod_attendance', $url);
     }
 
     if (!empty($fromform->status)) {
         $success = $att->take_from_student($fromform);
 
-        $url = new moodle_url('/mod/attendance/view.php', array('id' => $cm->id));
+        $url = new moodle_url('/mod/attendance/view.php', ['id' => $cm->id]);
         if ($success) {
             // Redirect back to the view page.
             redirect($url, get_string('studentmarked', 'attendance'));
@@ -180,17 +180,17 @@
 // Create the form.
 if ($attforsession->rotateqrcode == 1) {
     $mform = new mod_attendance\form\studentattendance(null,
-        array('course' => $course, 'cm' => $cm, 'modcontext' => $PAGE->context, 'session' => $attforsession,
-            'attendance' => $att, 'password' => $attforsession->studentpassword));
+        ['course' => $course, 'cm' => $cm, 'modcontext' => $PAGE->context, 'session' => $attforsession,
+            'attendance' => $att, 'password' => $attforsession->studentpassword]);
 } else {
     $mform = new mod_attendance\form\studentattendance(null,
-        array('course' => $course, 'cm' => $cm, 'modcontext' => $PAGE->context, 'session' => $attforsession,
-            'attendance' => $att, 'password' => $qrpass));
+        ['course' => $course, 'cm' => $cm, 'modcontext' => $PAGE->context, 'session' => $attforsession,
+            'attendance' => $att, 'password' => $qrpass]);
 }
 
 if ($mform->is_cancelled()) {
     // The user cancelled the form, so redirect them to the view page.
-    $url = new moodle_url('/mod/attendance/view.php', array('id' => $cm->id));
+    $url = new moodle_url('/mod/attendance/view.php', ['id' => $cm->id]);
     redirect($url);
 } else if ($fromform = $mform->get_data()) {
     // Check if password required and if set correctly.
@@ -200,13 +200,13 @@
         // Check if password being passed is valid.
         && $attforsession->studentpassword !== $fromform->studentpassword) {
 
-        $url = new moodle_url('/mod/attendance/attendance.php', array('sessid' => $id, 'sesskey' => sesskey()));
+        $url = new moodle_url('/mod/attendance/attendance.php', ['sessid' => $id, 'sesskey' => sesskey()]);
         redirect($url, get_string('incorrectpassword', 'mod_attendance'), null, \core\output\notification::NOTIFY_ERROR);
     }
     if (attendance_session_open_for_students($attforsession) && $attforsession->autoassignstatus) {
         $fromform->status = attendance_session_get_highest_status($att, $attforsession);
         if (empty($fromform->status)) {
-            $url = new moodle_url('/mod/attendance/view.php', array('id' => $cm->id));
+            $url = new moodle_url('/mod/attendance/view.php', ['id' => $cm->id]);
             throw new moodle_exception('attendance_no_status', 'mod_attendance', $url);
         }
     }
@@ -218,7 +218,7 @@
         }
         $success = $att->take_from_student($fromform);
 
-        $url = new moodle_url('/mod/attendance/view.php', array('id' => $cm->id));
+        $url = new moodle_url('/mod/attendance/view.php', ['id' => $cm->id]);
         if ($success) {
             // Redirect back to the view page.
             redirect($url, get_string('studentmarked', 'attendance'));
diff --git a/automark.php b/automark.php
index c24e90e0787..6db4c809e49 100644
--- a/automark.php
+++ b/automark.php
@@ -30,9 +30,9 @@
 $grouptype  = required_param('grouptype', PARAM_INT);
 
 $cm             = get_coursemodule_from_id('attendance', $id, 0, false, MUST_EXIST);
-$course         = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
-$att            = $DB->get_record('attendance', array('id' => $cm->instance), '*', MUST_EXIST);
-$session        = $DB->get_record('attendance_sessions', array('id' => $sessionid, 'attendanceid' => $att->id),
+$course         = $DB->get_record('course', ['id' => $cm->course], '*', MUST_EXIST);
+$att            = $DB->get_record('attendance', ['id' => $cm->instance], '*', MUST_EXIST);
+$session        = $DB->get_record('attendance_sessions', ['id' => $sessionid, 'attendanceid' => $att->id],
                                   '*', MUST_EXIST);
 
 require_login($course, true, $cm);
diff --git a/backup/moodle2/backup_attendance_stepslib.php b/backup/moodle2/backup_attendance_stepslib.php
index c3d18b98e1c..a5b553229c7 100644
--- a/backup/moodle2/backup_attendance_stepslib.php
+++ b/backup/moodle2/backup_attendance_stepslib.php
@@ -41,24 +41,24 @@ protected function define_structure() {
         $userinfo = $this->get_setting_value('userinfo');
 
         // XML nodes declaration - non-user data.
-        $attendance = new backup_nested_element('attendance', array('id'), array(
-            'name', 'intro', 'introformat', 'grade', 'showextrauserdetails', 'showsessiondetails', 'sessiondetailspos', 'subnet'));
+        $attendance = new backup_nested_element('attendance', ['id'], [
+            'name', 'intro', 'introformat', 'grade', 'showextrauserdetails', 'showsessiondetails', 'sessiondetailspos', 'subnet']);
 
         $statuses = new backup_nested_element('statuses');
-        $status  = new backup_nested_element('status', array('id'), array(
-            'acronym', 'description', 'grade', 'studentavailability', 'availablebeforesession', 'setunmarked', 'visible', 'deleted', 'setnumber'));
+        $status  = new backup_nested_element('status', ['id'], [
+            'acronym', 'description', 'grade', 'studentavailability', 'availablebeforesession', 'setunmarked', 'visible', 'deleted', 'setnumber']);
 
         $warnings = new backup_nested_element('warnings');
-        $warning  = new backup_nested_element('warning', array('id'), array('warningpercent', 'warnafter',
-            'maxwarn', 'emailuser', 'emailsubject', 'emailcontent', 'emailcontentformat', 'thirdpartyemails'));
+        $warning  = new backup_nested_element('warning', ['id'], ['warningpercent', 'warnafter',
+            'maxwarn', 'emailuser', 'emailsubject', 'emailcontent', 'emailcontentformat', 'thirdpartyemails']);
 
         $sessions = new backup_nested_element('sessions');
-        $session  = new backup_nested_element('session', array('id'), array(
+        $session  = new backup_nested_element('session', ['id'], [
             'groupid', 'sessdate', 'duration', 'lasttaken', 'lasttakenby', 'timemodified',
             'description', 'descriptionformat', 'studentscanmark', 'allowupdatestatus', 'studentpassword', 'autoassignstatus',
             'subnet', 'automark', 'automarkcompleted', 'statusset', 'absenteereport', 'preventsharedip',
             'preventsharediptime', 'caleventid', 'calendarevent', 'includeqrcode', 'automarkcmid',
-            'studentsearlyopentime'));
+            'studentsearlyopentime']);
 
         $customfields = new backup_nested_element('customfields');
         $customfield = new backup_nested_element('customfield', ['id'], [
@@ -66,8 +66,8 @@ protected function define_structure() {
 
         // XML nodes declaration - user data.
         $logs = new backup_nested_element('logs');
-        $log  = new backup_nested_element('log', array('id'), array(
-            'sessionid', 'studentid', 'statusid', 'statusset', 'timetaken', 'takenby', 'remarks'));
+        $log  = new backup_nested_element('log', ['id'], [
+            'sessionid', 'studentid', 'statusid', 'statusset', 'timetaken', 'takenby', 'remarks']);
 
         // Build the tree in the order needed for restore.
         $attendance->add_child($statuses);
@@ -87,14 +87,14 @@ protected function define_structure() {
 
         // Data sources - non-user data.
 
-        $attendance->set_source_table('attendance', array('id' => backup::VAR_ACTIVITYID));
+        $attendance->set_source_table('attendance', ['id' => backup::VAR_ACTIVITYID]);
 
-        $status->set_source_table('attendance_statuses', array('attendanceid' => backup::VAR_PARENTID));
+        $status->set_source_table('attendance_statuses', ['attendanceid' => backup::VAR_PARENTID]);
 
         $warning->set_source_table('attendance_warning',
-            array('idnumber' => backup::VAR_PARENTID));
+            ['idnumber' => backup::VAR_PARENTID]);
 
-        $session->set_source_table('attendance_sessions', array('attendanceid' => backup::VAR_PARENTID));
+        $session->set_source_table('attendance_sessions', ['attendanceid' => backup::VAR_PARENTID]);
 
         $handler = mod_attendance\customfield\session_handler::create();
         $fieldsforbackup = $handler->get_instance_data_for_backup_by_activity($this->task->get_activityid());
@@ -102,7 +102,7 @@ protected function define_structure() {
 
         // Data sources - user related data.
         if ($userinfo) {
-            $log->set_source_table('attendance_log', array('sessionid' => backup::VAR_PARENTID));
+            $log->set_source_table('attendance_log', ['sessionid' => backup::VAR_PARENTID]);
         }
 
         // Id annotations.
diff --git a/backup/moodle2/restore_attendance_activity_task.class.php b/backup/moodle2/restore_attendance_activity_task.class.php
index 2acd4ac7d55..ead5bc9459c 100644
--- a/backup/moodle2/restore_attendance_activity_task.class.php
+++ b/backup/moodle2/restore_attendance_activity_task.class.php
@@ -52,11 +52,11 @@ protected function define_my_steps() {
      * processed by the link decoder
      */
     public static function define_decode_contents() {
-        $contents = array();
+        $contents = [];
 
-        $contents[] = new restore_decode_content('attendance', array('intro'), 'attendance');
+        $contents[] = new restore_decode_content('attendance', ['intro'], 'attendance');
         $contents[] = new restore_decode_content('attendance_sessions',
-                          array('description'), 'attendance_session');
+                          ['description'], 'attendance_session');
 
         return $contents;
     }
@@ -66,18 +66,18 @@ public static function define_decode_contents() {
      * to the activity to be executed by the link decoder
      */
     public static function define_decode_rules() {
-        $rules = array();
+        $rules = [];
 
         $rules[] = new restore_decode_rule('ATTENDANCEVIEWBYID',
                     '/mod/attendance/view.php?id=$1', 'course_module');
         $rules[] = new restore_decode_rule('ATTENDANCEVIEWBYIDSTUD',
-                    '/mod/attendance/view.php?id=$1&studentid=$2', array('course_module', 'user'));
+                    '/mod/attendance/view.php?id=$1&studentid=$2', ['course_module', 'user']);
 
         // Older style backups using previous plugin name.
         $rules[] = new restore_decode_rule('ATTFORBLOCKVIEWBYID',
             '/mod/attendance/view.php?id=$1', 'course_module');
         $rules[] = new restore_decode_rule('ATTFORBLOCKVIEWBYIDSTUD',
-            '/mod/attendance/view.php?id=$1&studentid=$2', array('course_module', 'user'));
+            '/mod/attendance/view.php?id=$1&studentid=$2', ['course_module', 'user']);
 
         return $rules;
 
@@ -90,7 +90,7 @@ public static function define_decode_rules() {
      * of {@see restore_log_rule} objects
      */
     public static function define_restore_log_rules() {
-        $rules = array();
+        $rules = [];
 
         // TODO: log restore.
         return $rules;
@@ -107,7 +107,7 @@ public static function define_restore_log_rules() {
      * activity level. All them are rules not linked to any module instance (cmid = 0)
      */
     public static function define_restore_log_rules_for_course() {
-        $rules = array();
+        $rules = [];
 
         return $rules;
     }
diff --git a/backup/moodle2/restore_attendance_stepslib.php b/backup/moodle2/restore_attendance_stepslib.php
index 6711a1edda3..1bb26250493 100644
--- a/backup/moodle2/restore_attendance_stepslib.php
+++ b/backup/moodle2/restore_attendance_stepslib.php
@@ -37,7 +37,7 @@ class restore_attendance_activity_structure_step extends restore_activity_struct
      */
     protected function define_structure() {
 
-        $paths = array();
+        $paths = [];
 
         $userinfo = $this->get_setting_value('userinfo'); // Are we including userinfo?
 
diff --git a/classes/analytics/indicator/activity_base.php b/classes/analytics/indicator/activity_base.php
index 53209c9cfa3..8cbcf38907f 100644
--- a/classes/analytics/indicator/activity_base.php
+++ b/classes/analytics/indicator/activity_base.php
@@ -41,6 +41,6 @@ abstract class activity_base extends \core_analytics\local\indicator\community_o
      * @return string[]
      */
     protected function feedback_viewed_events() {
-        return array('\mod_attendance\event\session_report_viewed');
+        return ['\mod_attendance\event\session_report_viewed'];
     }
 }
diff --git a/classes/attendance_webservices_handler.php b/classes/attendance_webservices_handler.php
index 934ca2823b1..20b0335966f 100644
--- a/classes/attendance_webservices_handler.php
+++ b/classes/attendance_webservices_handler.php
@@ -45,14 +45,14 @@ public static function get_courses_with_today_sessions($userid) {
         $usercourses = enrol_get_users_courses($userid);
         $attendanceinstance = get_all_instances_in_courses('attendance', $usercourses);
 
-        $coursessessions = array();
+        $coursessessions = [];
 
         foreach ($attendanceinstance as $attendance) {
             $context = context_course::instance($attendance->course);
             if (has_capability('mod/attendance:takeattendances', $context, $userid)) {
                 $course = $usercourses[$attendance->course];
                 if (!isset($course->attendance_instance)) {
-                    $course->attendance_instance = array();
+                    $course->attendance_instance = [];
                 }
 
                 $att = new stdClass();
@@ -68,7 +68,7 @@ public static function get_courses_with_today_sessions($userid) {
                 $todaysessions = $att->get_today_sessions();
 
                 if (!empty($todaysessions)) {
-                    $course->attendance_instance[$att->id] = array();
+                    $course->attendance_instance[$att->id] = [];
                     $course->attendance_instance[$att->id]['name'] = $att->name;
                     $course->attendance_instance[$att->id]['today_sessions'] = $todaysessions;
                     $coursessessions[$course->id] = $course;
@@ -86,7 +86,7 @@ public static function get_courses_with_today_sessions($userid) {
      * @return array
      */
     private static function prepare_data($coursessessions) {
-        $courses = array();
+        $courses = [];
 
         foreach ($coursessessions as $c) {
             $courses[$c->id] = new stdClass();
@@ -107,15 +107,15 @@ private static function prepare_data($coursessessions) {
     public static function get_session($sessionid) {
         global $DB;
 
-        $session = $DB->get_record('attendance_sessions', array('id' => $sessionid));
-        $session->courseid = $DB->get_field('attendance', 'course', array('id' => $session->attendanceid));
+        $session = $DB->get_record('attendance_sessions', ['id' => $sessionid]);
+        $session->courseid = $DB->get_field('attendance', 'course', ['id' => $session->attendanceid]);
         $session->statuses = attendance_get_statuses($session->attendanceid, true, $session->statusset);
         $coursecontext = context_course::instance($session->courseid);
         $session->users = get_enrolled_users($coursecontext, 'mod/attendance:canbelisted',
                                              $session->groupid, 'u.id, u.firstname, u.lastname');
-        $session->attendance_log = array();
+        $session->attendance_log = [];
 
-        if ($attendancelog = $DB->get_records('attendance_log', array('sessionid' => $sessionid),
+        if ($attendancelog = $DB->get_records('attendance_log', ['sessionid' => $sessionid],
                                               '', 'studentid, statusid, remarks, id')) {
             $session->attendance_log = $attendancelog;
         }
@@ -143,14 +143,14 @@ public static function update_user_status($sessionid, $studentid, $takenbyid, $s
         $record->statusid = $statusid;
         $record->studentid = $studentid;
 
-        if ($attendancelog = $DB->get_record('attendance_log', array('sessionid' => $sessionid, 'studentid' => $studentid))) {
+        if ($attendancelog = $DB->get_record('attendance_log', ['sessionid' => $sessionid, 'studentid' => $studentid])) {
             $record->id = $attendancelog->id;
             $DB->update_record('attendance_log', $record);
         } else {
             $DB->insert_record('attendance_log', $record);
         }
 
-        if ($attendancesession = $DB->get_record('attendance_sessions', array('id' => $sessionid))) {
+        if ($attendancesession = $DB->get_record('attendance_sessions', ['id' => $sessionid])) {
             $attendancesession->lasttaken = time();
             $attendancesession->lasttakenby = $takenbyid;
             $attendancesession->timemodified = time();
@@ -168,9 +168,9 @@ public static function update_user_status($sessionid, $studentid, $takenbyid, $s
     public static function get_sessions($attendanceid) {
         global $DB;
 
-        $sessions = $DB->get_records('attendance_sessions', array('attendanceid' => $attendanceid), 'id ASC');
+        $sessions = $DB->get_records('attendance_sessions', ['attendanceid' => $attendanceid], 'id ASC');
 
-        $sessionsinfo = array();
+        $sessionsinfo = [];
 
         foreach ($sessions as $session) {
             $sessionsinfo[$session->id] = self::get_session($session->id);
diff --git a/classes/calendar_helpers.php b/classes/calendar_helpers.php
index 9191e26a37e..07384c552de 100644
--- a/classes/calendar_helpers.php
+++ b/classes/calendar_helpers.php
@@ -43,7 +43,7 @@ function attendance_create_calendar_event(&$session) {
         return true;
     }
 
-    $attendance = $DB->get_record('attendance', array('id' => $session->attendanceid));
+    $attendance = $DB->get_record('attendance', ['id' => $session->attendanceid]);
 
     $caleventdata = new stdClass();
     $caleventdata->name           = $attendance->name;
@@ -65,7 +65,7 @@ function attendance_create_calendar_event(&$session) {
     $calevent = new stdClass();
     if ($calevent = calendar_event::create($caleventdata, false)) {
         $session->caleventid = $calevent->id;
-        $DB->set_field('attendance_sessions', 'caleventid', $session->caleventid, array('id' => $session->id));
+        $DB->set_field('attendance_sessions', 'caleventid', $session->caleventid, ['id' => $session->id]);
         return true;
     } else {
         return false;
@@ -117,7 +117,7 @@ function attendance_update_calendar_event($session) {
     if ($session->calendarevent == 0) {
         if ($session->caleventid != 0) {
             // There is an existing event we should delete, calendarevent just got turned off.
-            $DB->delete_records_list('event', 'id', array($caleventid));
+            $DB->delete_records_list('event', 'id', [$caleventid]);
             $session->caleventid = 0;
             $DB->update_record('attendance_sessions', $session);
             return true;
diff --git a/classes/customfield/session_handler.php b/classes/customfield/session_handler.php
index c45eee76b3f..26ce5b53f82 100644
--- a/classes/customfield/session_handler.php
+++ b/classes/customfield/session_handler.php
@@ -168,7 +168,7 @@ public function config_form_definition(\MoodleQuickForm $mform) {
         // Field data visibility.
         $visibilityoptions = [self::VISIBLETOALL => get_string('customfield_visibletoall', 'core_course'),
             self::VISIBLETOTEACHERS => get_string('customfield_visibletoteachers', 'core_course'),
-            self::NOTVISIBLE => get_string('customfield_notvisible', 'core_course')];
+            self::NOTVISIBLE => get_string('customfield_notvisible', 'core_course'), ];
         $mform->addElement('select', 'configdata[visibility]', get_string('customfield_visibility', 'core_course'),
             $visibilityoptions);
         $mform->addHelpButton('configdata[visibility]', 'customfield_visibility', 'core_course');
@@ -244,7 +244,7 @@ public function get_instance_data_for_backup_by_activity(int $activityid) : arra
                         'shortname' => $d->get_field()->get('shortname'),
                         'type' => $d->get_field()->get('type'),
                         'value' => $d->get_value(),
-                        'valueformat' => $d->get('valueformat')];
+                        'valueformat' => $d->get('valueformat'), ];
                 }
             }
         }
diff --git a/classes/event/attendance_taken.php b/classes/event/attendance_taken.php
index b4f2b71e97f..ee51470ec14 100644
--- a/classes/event/attendance_taken.php
+++ b/classes/event/attendance_taken.php
@@ -73,9 +73,9 @@ public static function get_name() {
      * @return \moodle_url
      */
     public function get_url() {
-        return new \moodle_url('/mod/attendance/take.php', array('id' => $this->contextinstanceid,
+        return new \moodle_url('/mod/attendance/take.php', ['id' => $this->contextinstanceid,
                                                                  'sessionid' => $this->other['sessionid'],
-                                                                 'grouptype' => $this->other['grouptype']));
+                                                                 'grouptype' => $this->other['grouptype']]);
     }
 
     /**
@@ -84,7 +84,7 @@ public function get_url() {
      * @return array of parameters for object mapping.
      */
     public static function get_objectid_mapping() {
-        return array('db' => 'attendance', 'restore' => 'attendance');
+        return ['db' => 'attendance', 'restore' => 'attendance'];
     }
 
     /**
diff --git a/classes/event/attendance_taken_by_student.php b/classes/event/attendance_taken_by_student.php
index 9fe4b5581b0..4ca081f5caa 100644
--- a/classes/event/attendance_taken_by_student.php
+++ b/classes/event/attendance_taken_by_student.php
@@ -73,9 +73,9 @@ public static function get_name() {
      * @return \moodle_url
      */
     public function get_url() {
-        return new \moodle_url('/take.php', array('id' => $this->contextinstanceid,
+        return new \moodle_url('/take.php', ['id' => $this->contextinstanceid,
                                                                  'sessionid' => $this->other['sessionid'],
-                                                                 'grouptype' => $this->other['grouptype']));
+                                                                 'grouptype' => $this->other['grouptype']]);
     }
 
     /**
@@ -84,7 +84,7 @@ public function get_url() {
      * @return array of parameters for object mapping.
      */
     public static function get_objectid_mapping() {
-        return array('db' => 'attendance', 'restore' => 'attendance');
+        return ['db' => 'attendance', 'restore' => 'attendance'];
     }
 
     /**
diff --git a/classes/event/course_module_instance_list_viewed.php b/classes/event/course_module_instance_list_viewed.php
index a50ee2094b5..a6ea0789643 100644
--- a/classes/event/course_module_instance_list_viewed.php
+++ b/classes/event/course_module_instance_list_viewed.php
@@ -39,9 +39,9 @@ class course_module_instance_list_viewed extends \core\event\course_module_insta
      * @return course_module_instance_list_viewed
      */
     public static function create_from_course(\stdClass $course) {
-        $params = array(
-            'context' => \context_course::instance($course->id)
-        );
+        $params = [
+            'context' => \context_course::instance($course->id),
+        ];
         $event = self::create($params);
         $event->add_record_snapshot('course', $course);
         return $event;
diff --git a/classes/event/report_viewed.php b/classes/event/report_viewed.php
index 36611f25bb4..63752f13bdf 100644
--- a/classes/event/report_viewed.php
+++ b/classes/event/report_viewed.php
@@ -73,7 +73,7 @@ public static function get_name() {
      * @return \moodle_url
      */
     public function get_url() {
-        return new \moodle_url('/mod/attendance/report.php', array('id' => $this->contextinstanceid));
+        return new \moodle_url('/mod/attendance/report.php', ['id' => $this->contextinstanceid]);
     }
 
     /**
@@ -82,7 +82,7 @@ public function get_url() {
      * @return array of parameters for object mapping.
      */
     public static function get_objectid_mapping() {
-        return array('db' => 'attendance', 'restore' => 'attendance');
+        return ['db' => 'attendance', 'restore' => 'attendance'];
     }
 
 }
diff --git a/classes/event/session_added.php b/classes/event/session_added.php
index c0178f3652b..07a3e0e3dda 100644
--- a/classes/event/session_added.php
+++ b/classes/event/session_added.php
@@ -73,7 +73,7 @@ public static function get_name() {
      * @return \moodle_url
      */
     public function get_url() {
-        return new \moodle_url('/mod/attendance/manage.php', array('id' => $this->contextinstanceid));
+        return new \moodle_url('/mod/attendance/manage.php', ['id' => $this->contextinstanceid]);
     }
 
     /**
@@ -82,7 +82,7 @@ public function get_url() {
      * @return array of parameters for object mapping.
      */
     public static function get_objectid_mapping() {
-        return array('db' => 'attendance', 'restore' => 'attendance');
+        return ['db' => 'attendance', 'restore' => 'attendance'];
     }
 
     /**
diff --git a/classes/event/session_deleted.php b/classes/event/session_deleted.php
index 81df19d4d32..dede57a26ef 100644
--- a/classes/event/session_deleted.php
+++ b/classes/event/session_deleted.php
@@ -73,7 +73,7 @@ public static function get_name() {
      * @return \moodle_url
      */
     public function get_url() {
-        return new \moodle_url('/mod/attendance/manage.php', array('id' => $this->contextinstanceid));
+        return new \moodle_url('/mod/attendance/manage.php', ['id' => $this->contextinstanceid]);
     }
 
     /**
@@ -82,7 +82,7 @@ public function get_url() {
      * @return array of parameters for object mapping.
      */
     public static function get_objectid_mapping() {
-        return array('db' => 'attendance', 'restore' => 'attendance');
+        return ['db' => 'attendance', 'restore' => 'attendance'];
     }
 
     /**
diff --git a/classes/event/session_duration_updated.php b/classes/event/session_duration_updated.php
index cf91b06cd08..59e5fd4c650 100644
--- a/classes/event/session_duration_updated.php
+++ b/classes/event/session_duration_updated.php
@@ -73,7 +73,7 @@ public static function get_name() {
      * @return \moodle_url
      */
     public function get_url() {
-        return new \moodle_url('/mod/attendance/manage.php', array('id' => $this->contextinstanceid));
+        return new \moodle_url('/mod/attendance/manage.php', ['id' => $this->contextinstanceid]);
     }
 
     /**
@@ -82,7 +82,7 @@ public function get_url() {
      * @return array of parameters for object mapping.
      */
     public static function get_objectid_mapping() {
-        return array('db' => 'attendance', 'restore' => 'attendance');
+        return ['db' => 'attendance', 'restore' => 'attendance'];
     }
 
     /**
diff --git a/classes/event/session_ip_shared.php b/classes/event/session_ip_shared.php
index 56184a27bf9..6840d7f1adc 100644
--- a/classes/event/session_ip_shared.php
+++ b/classes/event/session_ip_shared.php
@@ -82,9 +82,9 @@ public function get_url() {
      * @return array of parameters for object mapping.
      */
     public static function get_objectid_mapping() {
-        return array(
+        return [
             'db' => 'attendance',
-            'restore' => 'attendance'
-        );
+            'restore' => 'attendance',
+        ];
     }
 }
diff --git a/classes/event/session_report_viewed.php b/classes/event/session_report_viewed.php
index a41365bd23d..f1ed905e1bf 100644
--- a/classes/event/session_report_viewed.php
+++ b/classes/event/session_report_viewed.php
@@ -77,13 +77,13 @@ public function get_url() {
         $mode = empty($this->other['mode']) ? "" : $this->other['mode'];
         $groupby = empty($this->other['groupby']) ? "" : $this->other['groupby'];
         $sesscourses = empty($this->other['sesscourses']) ? "" : $this->other['sesscourses'];
-        return new \moodle_url('/mod/attendance/view.php', array('id' => $this->contextinstanceid,
+        return new \moodle_url('/mod/attendance/view.php', ['id' => $this->contextinstanceid,
                                                                  'studentid' => $this->relateduserid,
                                                                  'mode' => $mode,
                                                                  'view' => $this->other['view'],
                                                                  'groupby' => $groupby,
                                                                  'sesscourses' => $sesscourses,
-                                                                 'curdate' => $this->other['curdate']));
+                                                                 'curdate' => $this->other['curdate']]);
     }
 
     /**
@@ -92,7 +92,7 @@ public function get_url() {
      * @return array of parameters for object mapping.
      */
     public static function get_objectid_mapping() {
-        return array();
+        return [];
     }
 
     /**
@@ -101,7 +101,7 @@ public static function get_objectid_mapping() {
      * @return array of parameters for object mapping for objects referenced in 'other' property.
      */
     public static function get_other_mapping() {
-        return array();
+        return [];
     }
 
     /**
diff --git a/classes/event/session_updated.php b/classes/event/session_updated.php
index 33462f8c835..85c37d077d1 100644
--- a/classes/event/session_updated.php
+++ b/classes/event/session_updated.php
@@ -73,9 +73,9 @@ public static function get_name() {
      * @return \moodle_url
      */
     public function get_url() {
-        return new \moodle_url('/mod/attendance/sessions.php', array('id' => $this->contextinstanceid,
+        return new \moodle_url('/mod/attendance/sessions.php', ['id' => $this->contextinstanceid,
                                                                      'sessionid' => $this->other['sessionid'],
-                                                                     'action' => $this->other['action']));
+                                                                     'action' => $this->other['action']]);
     }
 
     /**
@@ -84,7 +84,7 @@ public function get_url() {
      * @return array of parameters for object mapping.
      */
     public static function get_objectid_mapping() {
-        return array('db' => 'attendance', 'restore' => 'attendance');
+        return ['db' => 'attendance', 'restore' => 'attendance'];
     }
 
     /**
diff --git a/classes/event/sessions_imported.php b/classes/event/sessions_imported.php
index ea2bf808257..305e8751056 100644
--- a/classes/event/sessions_imported.php
+++ b/classes/event/sessions_imported.php
@@ -82,9 +82,9 @@ public function get_url() {
      * @return array of parameters for object mapping.
      */
     public static function get_objectid_mapping() {
-        return array(
+        return [
             'db' => 'attendance',
-            'restore' => 'attendance'
-        );
+            'restore' => 'attendance',
+        ];
     }
 }
diff --git a/classes/event/status_added.php b/classes/event/status_added.php
index e175314721e..be769edc408 100644
--- a/classes/event/status_added.php
+++ b/classes/event/status_added.php
@@ -73,7 +73,7 @@ public static function get_name() {
      * @return \moodle_url
      */
     public function get_url() {
-        return new \moodle_url('/mod/attendance/preferences.php', array('id' => $this->contextinstanceid));
+        return new \moodle_url('/mod/attendance/preferences.php', ['id' => $this->contextinstanceid]);
     }
 
     /**
@@ -82,7 +82,7 @@ public function get_url() {
      * @return array of parameters for object mapping.
      */
     public static function get_objectid_mapping() {
-        return array('db' => 'attendance', 'restore' => 'attendance');
+        return ['db' => 'attendance', 'restore' => 'attendance'];
     }
 
 }
diff --git a/classes/event/status_removed.php b/classes/event/status_removed.php
index 5438e5ab115..f788438718d 100644
--- a/classes/event/status_removed.php
+++ b/classes/event/status_removed.php
@@ -75,7 +75,7 @@ public static function get_name() {
      * @return \moodle_url
      */
     public function get_url() {
-        return new \moodle_url('/mod/attendance/preferences.php', array('id' => $this->contextinstanceid));
+        return new \moodle_url('/mod/attendance/preferences.php', ['id' => $this->contextinstanceid]);
     }
 
     /**
@@ -84,7 +84,7 @@ public function get_url() {
      * @return array of parameters for object mapping.
      */
     public static function get_objectid_mapping() {
-        return array('db' => 'attendance', 'restore' => 'attendance');
+        return ['db' => 'attendance', 'restore' => 'attendance'];
     }
 
 }
diff --git a/classes/event/status_updated.php b/classes/event/status_updated.php
index c3223bfe317..b8e471f2e05 100644
--- a/classes/event/status_updated.php
+++ b/classes/event/status_updated.php
@@ -73,7 +73,7 @@ public static function get_name() {
      * @return \moodle_url
      */
     public function get_url() {
-        return new \moodle_url('/mod/attendance/preferences.php', array('id' => $this->contextinstanceid));
+        return new \moodle_url('/mod/attendance/preferences.php', ['id' => $this->contextinstanceid]);
     }
 
     /**
@@ -82,7 +82,7 @@ public function get_url() {
      * @return array of parameters for object mapping.
      */
     public static function get_objectid_mapping() {
-        return array('db' => 'attendance', 'restore' => 'attendance');
+        return ['db' => 'attendance', 'restore' => 'attendance'];
     }
 
 }
diff --git a/classes/form/addsession.php b/classes/form/addsession.php
index 75a19e776ce..116d31e742b 100644
--- a/classes/form/addsession.php
+++ b/classes/form/addsession.php
@@ -72,7 +72,7 @@ public function definition() {
                 $mform->setType('sessiontype', PARAM_INT);
                 break;
             case VISIBLEGROUPS:
-                $radio = array();
+                $radio = [];
                 $radio[] = &$mform->createElement('radio', 'sessiontype', '', get_string('commonsession', 'attendance'),
                                                   mod_attendance_structure::SESSION_COMMON);
                 $radio[] = &$mform->createElement('radio', 'sessiontype', '', get_string('groupsession', 'attendance'),
@@ -90,7 +90,7 @@ public function definition() {
                 $groups = groups_get_all_groups($course->id, 0, $cm->groupingid);
             }
             if ($groups) {
-                $selectgroups = array();
+                $selectgroups = [];
                 foreach ($groups as $group) {
                     $selectgroups[$group->id] = $group->name;
                 }
@@ -99,7 +99,7 @@ public function definition() {
                 $mform->disabledIf('groups', 'sessiontype', 'eq', mod_attendance_structure::SESSION_COMMON);
             } else {
                 if ($groupmode == VISIBLEGROUPS) {
-                    $mform->updateElementAttr($radio, array('disabled' => 'disabled'));
+                    $mform->updateElementAttr($radio, ['disabled' => 'disabled']);
                 }
                 $mform->addElement('static', 'groups', get_string('groups', 'group'),
                                   get_string('nogroups', 'attendance'));
@@ -114,7 +114,7 @@ public function definition() {
         // Select which status set to use.
         $maxstatusset = attendance_get_max_statusset($this->_customdata['att']->id);
         if ($maxstatusset > 0) {
-            $opts = array();
+            $opts = [];
             for ($i = 0; $i <= $maxstatusset; $i++) {
                 $opts[$i] = attendance_get_setname($this->_customdata['att']->id, $i);
             }
@@ -124,8 +124,8 @@ public function definition() {
             $mform->setType('statusset', PARAM_INT);
         }
 
-        $mform->addElement('editor', 'sdescription', get_string('description', 'attendance'), array('rows' => 1, 'columns' => 80),
-                            array('maxfiles' => EDITOR_UNLIMITED_FILES, 'noclean' => true, 'context' => $modcontext));
+        $mform->addElement('editor', 'sdescription', get_string('description', 'attendance'), ['rows' => 1, 'columns' => 80],
+                            ['maxfiles' => EDITOR_UNLIMITED_FILES, 'noclean' => true, 'context' => $modcontext]);
         $mform->setType('sdescription', PARAM_RAW);
 
         if (!empty($pluginconfig->enablecalendar)) {
@@ -158,7 +158,7 @@ public function definition() {
         $mform->addElement('checkbox', 'addmultiply', '', get_string('repeatasfollows', 'attendance'));
         $mform->addHelpButton('addmultiply', 'createmultiplesessions', 'attendance');
 
-        $sdays = array();
+        $sdays = [];
         if ($CFG->calendar_startwday === '0') { // Week start from sunday.
             $sdays[] =& $mform->createElement('checkbox', 'Sun', '', get_string('sunday', 'calendar'));
         }
@@ -171,15 +171,15 @@ public function definition() {
         if ($CFG->calendar_startwday !== '0') { // Week start from sunday.
             $sdays[] =& $mform->createElement('checkbox', 'Sun', '', get_string('sunday', 'calendar'));
         }
-        $mform->addGroup($sdays, 'sdays', get_string('repeaton', 'attendance'), array('&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;'), true);
+        $mform->addGroup($sdays, 'sdays', get_string('repeaton', 'attendance'), ['&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;'], true);
         $mform->disabledIf('sdays', 'addmultiply', 'notchecked');
 
-        $period = array(1 => 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
-            21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36);
-        $periodgroup = array();
+        $period = [1 => 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
+            21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, ];
+        $periodgroup = [];
         $periodgroup[] =& $mform->createElement('select', 'period', '', $period, false, true);
         $periodgroup[] =& $mform->createElement('static', 'perioddesc', '', get_string('week', 'attendance'));
-        $mform->addGroup($periodgroup, 'periodgroup', get_string('repeatevery', 'attendance'), array(' '), false);
+        $mform->addGroup($periodgroup, 'periodgroup', get_string('repeatevery', 'attendance'), [' '], false);
         $mform->disabledIf('periodgroup', 'addmultiply', 'notchecked');
 
         $mform->addElement('date_selector', 'sessionenddate', get_string('repeatuntil', 'attendance'));
@@ -234,14 +234,14 @@ public function definition() {
         }
 
         if (!empty($studentscanmark)) {
-            $mgroup = array();
+            $mgroup = [];
 
             $mgroup[] = & $mform->createElement('text', 'studentpassword', get_string('studentpassword', 'attendance'));
             $mform->disabledif('studentpassword', 'rotateqrcode', 'checked');
             $mgroup[] = & $mform->createElement('checkbox', 'randompassword', '', get_string('randompassword', 'attendance'));
             $mform->disabledif('randompassword', 'rotateqrcode', 'checked');
 
-            $mform->addGroup($mgroup, 'passwordgrp', get_string('passwordgrp', 'attendance'), array(' '), false);
+            $mform->addGroup($mgroup, 'passwordgrp', get_string('passwordgrp', 'attendance'), [' '], false);
 
             $mform->setType('studentpassword', PARAM_TEXT);
             $mform->addHelpButton('passwordgrp', 'passwordgrp', 'attendance');
@@ -283,7 +283,7 @@ public function definition() {
                 $mform->setDefault('automark', $pluginconfig->automark_default);
             }
         }
-        $mgroup2 = array();
+        $mgroup2 = [];
         $mgroup2[] = & $mform->createElement('text', 'subnet', get_string('requiresubnet', 'attendance'));
         if (empty(get_config('attendance', 'subnetactivitylevel'))) {
             $mform->setDefault('subnet', get_config('attendance', 'subnet'));
@@ -295,18 +295,18 @@ public function definition() {
         $mform->setDefault('usedefaultsubnet', 1);
         $mform->setType('subnet', PARAM_TEXT);
 
-        $mform->addGroup($mgroup2, 'subnetgrp', get_string('requiresubnet', 'attendance'), array(' '), false);
+        $mform->addGroup($mgroup2, 'subnetgrp', get_string('requiresubnet', 'attendance'), [' '], false);
         $mform->setAdvanced('subnetgrp');
         $mform->addHelpButton('subnetgrp', 'requiresubnet', 'attendance');
         $mform->hideif('subnet', 'usedefaultsubnet', 'checked');
 
-        $mgroup3 = array();
+        $mgroup3 = [];
         $options = attendance_get_sharedipoptions();
         $mgroup3[] = & $mform->createElement('select', 'preventsharedip',
             get_string('preventsharedip', 'attendance'), $options);
         $mgroup3[] = & $mform->createElement('text', 'preventsharediptime',
             get_string('preventsharediptime', 'attendance'), '', 'test');
-        $mform->addGroup($mgroup3, 'preventsharedgroup', get_string('preventsharedip', 'attendance'), array(' '), false);
+        $mform->addGroup($mgroup3, 'preventsharedgroup', get_string('preventsharedip', 'attendance'), [' '], false);
         $mform->addHelpButton('preventsharedgroup', 'preventsharedip', 'attendance');
         $mform->setAdvanced('preventsharedgroup');
         $mform->setType('preventsharedip', PARAM_INT);
@@ -353,7 +353,7 @@ public function validation($data, $files) {
 
         $addmulti = isset($data['addmultiply']) ? (int)$data['addmultiply'] : 0;
         if (($addmulti != 0) && (!array_key_exists('sdays', $data) || empty($data['sdays']))) {
-            $data['sdays'] = array();
+            $data['sdays'] = [];
             $errors['sdays'] = get_string('required', 'attendance');
         }
         if (isset($data['sdays'])) {
@@ -380,7 +380,7 @@ public function validation($data, $files) {
             FROM {attendance_statuses}
             WHERE deleted = 0 AND (attendanceid = 0 or attendanceid = ?)
             AND setnumber = ? AND setunmarked = 1';
-            $params = array($cm->instance, $data['statusset']);
+            $params = [$cm->instance, $data['statusset']];
             if (!$DB->record_exists_sql($sql, $params)) {
                 $errors['automark'] = get_string('noabsentstatusset', 'attendance');
             }
@@ -405,7 +405,7 @@ private function checkweekdays($sessiondate, $sessionenddate, $sdays) {
 
         $found = false;
 
-        $daysofweek = array(0 => "Sun", 1 => "Mon", 2 => "Tue", 3 => "Wed", 4 => "Thu", 5 => "Fri", 6 => "Sat");
+        $daysofweek = [0 => "Sun", 1 => "Mon", 2 => "Tue", 3 => "Wed", 4 => "Thu", 5 => "Fri", 6 => "Sat"];
         $start = new DateTime( date("Y-m-d", $sessiondate) );
         $interval = new DateInterval('P1D');
         $end = new DateTime( date("Y-m-d", $sessionenddate) );
diff --git a/classes/form/addwarning.php b/classes/form/addwarning.php
index 52638161932..768dd5b08f3 100644
--- a/classes/form/addwarning.php
+++ b/classes/form/addwarning.php
@@ -45,7 +45,7 @@ public function definition() {
         // Load global defaults.
         $config = get_config('attendance');
 
-        $options = array();
+        $options = [];
         for ($i = 1; $i <= 100; $i++) {
             $options[$i] = "$i%";
         }
@@ -54,7 +54,7 @@ public function definition() {
         $mform->setType('warningpercent', PARAM_INT);
         $mform->setDefault('warningpercent', $config->warningpercent);
 
-        $options = array();
+        $options = [];
         for ($i = 1; $i <= ATTENDANCE_MAXWARNAFTER; $i++) {
             $options[$i] = "$i";
         }
@@ -72,19 +72,19 @@ public function definition() {
         $mform->addHelpButton('emailuser', 'emailuser', 'mod_attendance');
         $mform->setDefault('emailuser', $config->emailuser);
 
-        $mform->addElement('text', 'emailsubject', get_string('emailsubject', 'mod_attendance'), array('size' => '64'));
+        $mform->addElement('text', 'emailsubject', get_string('emailsubject', 'mod_attendance'), ['size' => '64']);
         $mform->setType('emailsubject', PARAM_TEXT);
         $mform->addRule('emailsubject', get_string('maximumchars', '', 255), 'maxlength', 255, 'client');
         $mform->addHelpButton('emailsubject', 'emailsubject', 'mod_attendance');
         $mform->setDefault('emailsubject', $config->emailsubject);
 
         $mform->addElement('editor', 'emailcontent', get_string('emailcontent', 'mod_attendance'), null, null);
-        $mform->setDefault('emailcontent', array('text' => format_text($config->emailcontent)));
+        $mform->setDefault('emailcontent', ['text' => format_text($config->emailcontent)]);
         $mform->setType('emailcontent', PARAM_RAW);
         $mform->addHelpButton('emailcontent', 'emailcontent', 'mod_attendance');
 
         $users = get_users_by_capability(context_course::instance($COURSE->id), 'mod/attendance:warningemails');
-        $options = array();
+        $options = [];
         foreach ($users as $user) {
             $options[$user->id] = fullname($user);
         }
diff --git a/classes/form/duration.php b/classes/form/duration.php
index 0eb8b0db7ec..d61d17a69e3 100644
--- a/classes/form/duration.php
+++ b/classes/form/duration.php
@@ -57,7 +57,7 @@ public function definition() {
         }
         $durselect[] =& $mform->createElement('select', 'hours', '', $hours);
         $durselect[] =& $mform->createElement('select', 'minutes', '', $minutes, false, true);
-        $mform->addGroup($durselect, 'durtime', get_string('newduration', 'attendance'), array(' '), true);
+        $mform->addGroup($durselect, 'durtime', get_string('newduration', 'attendance'), [' '], true);
 
         $mform->addElement('hidden', 'ids', $ids);
         $mform->setType('ids', PARAM_ALPHANUMEXT);
@@ -66,7 +66,7 @@ public function definition() {
         $mform->addElement('hidden', 'action', \mod_attendance_sessions_page_params::ACTION_CHANGE_DURATION);
         $mform->setType('action', PARAM_INT);
 
-        $mform->setDefaults(array('durtime' => array('hours' => 0, 'minutes' => 0)));
+        $mform->setDefaults(['durtime' => ['hours' => 0, 'minutes' => 0]]);
 
         $submitstring = get_string('update', 'attendance');
         $this->add_action_buttons(true, $submitstring);
diff --git a/classes/form/export.php b/classes/form/export.php
index 614bc6db08f..6dda9ae2312 100644
--- a/classes/form/export.php
+++ b/classes/form/export.php
@@ -62,12 +62,12 @@ public function definition() {
         $namefields = $userfieldsapi->get_sql('u', false, '', '', false)->selects;
 
         $allusers = get_enrolled_users($modcontext, 'mod/attendance:canbelisted', 0, 'u.id,'.$namefields);
-        $userlist = array();
+        $userlist = [];
         foreach ($allusers as $user) {
             $userlist[$user->id] = fullname($user);
         }
         unset($allusers);
-        $tempusers = $DB->get_records('attendance_tempusers', array('courseid' => $course->id), 'studentid, fullname');
+        $tempusers = $DB->get_records('attendance_tempusers', ['courseid' => $course->id], 'studentid, fullname');
         foreach ($tempusers as $user) {
             $userlist[$user->studentid] = $user->fullname;
         }
@@ -81,10 +81,10 @@ public function definition() {
         $params = array_merge($gparams, $uparams);
         $groupmembers = $DB->get_recordset_select('groups_members', "groupid {$gsql} AND userid {$usql}", $params,
                                                   '', 'groupid, userid');
-        $groupmappings = array();
+        $groupmappings = [];
         foreach ($groupmembers as $groupmember) {
             if (!isset($groupmappings[$groupmember->groupid])) {
-                $groupmappings[$groupmember->groupid] = array();
+                $groupmappings[$groupmember->groupid] = [];
             }
             $groupmappings[$groupmember->groupid][$groupmember->userid] = $userlist[$groupmember->userid];
         }
@@ -95,15 +95,15 @@ public function definition() {
         $mform->addElement('select', 'group', get_string('group'), $grouplist);
 
         $mform->addElement('selectyesno', 'selectedusers', get_string('onlyselectedusers', 'mod_attendance'));
-        $sel = $mform->addElement('select', 'users', get_string('users', 'mod_attendance'), $userlist, array('size' => 12));
+        $sel = $mform->addElement('select', 'users', get_string('users', 'mod_attendance'), $userlist, ['size' => 12]);
         $sel->setMultiple(true);
         $mform->disabledIf('users', 'selectedusers', 'eq', 0);
 
-        $opts = array('groupmappings' => $groupmappings);
-        $PAGE->requires->yui_module('moodle-mod_attendance-groupfilter', 'M.mod_attendance.groupfilter.init', array($opts));
+        $opts = ['groupmappings' => $groupmappings];
+        $PAGE->requires->yui_module('moodle-mod_attendance-groupfilter', 'M.mod_attendance.groupfilter.init', [$opts]);
 
-        $ident = array();
-        $checkedfields = array();
+        $ident = [];
+        $checkedfields = [];
 
         $adminsetfields = get_config('attendance', 'customexportfields');
         if (in_array('id', explode(',', $adminsetfields))) {
@@ -124,14 +124,14 @@ public function definition() {
             if ((is_siteadmin($USER) || $field->visible == PROFILE_VISIBLE_ALL || $field->visible == PROFILE_VISIBLE_TEACHERS)
             && in_array($field->shortname, explode(',', $adminsetfields))) {
                 $ident[] =& $mform->createElement('checkbox', $field->shortname, '',
-                    format_string($field->name, true, array('context' => $modcontext)));
+                    format_string($field->name, true, ['context' => $modcontext]));
                 $mform->setType($field->shortname, PARAM_NOTAGS);
                 $checkedfields['ident['. $field->shortname .']'] = true;
             }
         }
 
         if (count($ident) > 0) {
-            $mform->addGroup($ident, 'ident', get_string('identifyby', 'attendance'), array('<br />'), true);
+            $mform->addGroup($ident, 'ident', get_string('identifyby', 'attendance'), ['<br />'], true);
             $mform->setDefaults($checkedfields);
         }
         $mform->setType('id', PARAM_INT);
@@ -147,9 +147,9 @@ public function definition() {
         $mform->addElement('date_selector', 'sessionenddate', get_string('endofperiod', 'attendance'));
         $mform->disabledIf('sessionenddate', 'includeallsessions', 'checked');
 
-        $formatoptions = array('excel' => get_string('downloadexcel', 'attendance'),
+        $formatoptions = ['excel' => get_string('downloadexcel', 'attendance'),
                                'ooo' => get_string('downloadooo', 'attendance'),
-                               'text' => get_string('downloadtext', 'attendance'));
+                               'text' => get_string('downloadtext', 'attendance'), ];
         $mform->addElement('select', 'format', get_string('format'), $formatoptions);
 
         $submitstring = get_string('ok');
diff --git a/classes/form/import/marksessions.php b/classes/form/import/marksessions.php
index c8e56901065..b0799407029 100644
--- a/classes/form/import/marksessions.php
+++ b/classes/form/import/marksessions.php
@@ -52,10 +52,10 @@ public function definition() {
 
         $mform->addElement('header', 'uploadattendance', get_string('uploadattendance', 'attendance'));
 
-        $fileoptions = array('subdirs' => 0,
+        $fileoptions = ['subdirs' => 0,
                                 'maxbytes' => $COURSE->maxbytes,
                                 'accepted_types' => 'csv',
-                                'maxfiles' => 1);
+                                'maxfiles' => 1, ];
 
         $mform->addElement('filepicker', 'attendancefile', get_string('uploadafile'), null, $fileoptions);
         $mform->addRule('attendancefile', get_string('uploadnofilefound'), 'required', null, 'client');
@@ -65,7 +65,7 @@ public function definition() {
         $mform->addElement('select', 'encoding', get_string('encoding', 'grades'), $encodings);
         $mform->addHelpButton('encoding', 'encoding', 'grades');
 
-        $radio = array();
+        $radio = [];
         $radio[] = $mform->createElement('radio', 'separator', null, get_string('septab', 'grades'), 'tab');
         $radio[] = $mform->createElement('radio', 'separator', null, get_string('sepcomma', 'grades'), 'comma');
         $radio[] = $mform->createElement('radio', 'separator', null, get_string('sepcolon', 'grades'), 'colon');
diff --git a/classes/form/import/marksessions_confirm.php b/classes/form/import/marksessions_confirm.php
index a27a791053c..7924e6f16a8 100644
--- a/classes/form/import/marksessions_confirm.php
+++ b/classes/form/import/marksessions_confirm.php
@@ -56,12 +56,12 @@ public function definition() {
         $mform->addElement('select', 'userfrom', get_string('userimportfield', 'attendance'), $foundheaders);
         $mform->addHelpButton('userfrom', 'userimportfield', 'attendance');
         // This allows the user to choose which field in the user database the identifying column will map to.
-        $useroptions = array(
+        $useroptions = [
             'id'       => get_string('userid', 'attendance'),
             'username'     => get_string('username'),
             'idnumber' => get_string('idnumber'),
-            'email'    => get_string('email')
-        );
+            'email'    => get_string('email'),
+        ];
         $mform->addElement('select', 'userto', get_string('userimportto', 'attendance'), $useroptions);
 
         // Check if we can set an easy default value.
diff --git a/classes/form/studentattendance.php b/classes/form/studentattendance.php
index 5825c21d191..193c057ce29 100644
--- a/classes/form/studentattendance.php
+++ b/classes/form/studentattendance.php
@@ -87,18 +87,18 @@ public function definition() {
         }
 
         // Create radio buttons for setting the attendance status.
-        $radioarray = array();
+        $radioarray = [];
         foreach ($statuses as $status) {
             $name = \html_writer::span($status->description, 'statusdesc');
-            $radioarray[] =& $mform->createElement('radio', 'status', '', $name, $status->id, array());
+            $radioarray[] =& $mform->createElement('radio', 'status', '', $name, $status->id, []);
         }
         if ($disabledduetotime) {
             $warning = \html_writer::span(get_string('somedisabledstatus', 'attendance'), 'somedisabledstatus');
             $radioarray[] =& $mform->createElement('static', '', '', $warning);
         }
         // Add the radio buttons as a control with the user's name in front.
-        $radiogroup = $mform->addGroup($radioarray, 'statusarray', fullname($USER).':', array(''), false);
-        $radiogroup->setAttributes(array('class' => 'statusgroup'));
+        $radiogroup = $mform->addGroup($radioarray, 'statusarray', fullname($USER).':', [''], false);
+        $radiogroup->setAttributes(['class' => 'statusgroup']);
         $mform->addRule('statusarray', get_string('attendancenotset', 'attendance'), 'required', '', 'client', false, false);
         if (!empty($existingstatus) && !empty($statuses[$existingstatus->id])) {
             $mform->setDefault('status', $existingstatus->id);
@@ -115,7 +115,7 @@ public function definition() {
      * @return array
      */
     public function validation($data, $files) {
-        $errors = array();
+        $errors = [];
         if (!($this->_customdata['session']->autoassignstatus)) {
             // Check if this status is allowed to be set.
             if (empty($data['status'])) {
diff --git a/classes/form/tempmerge.php b/classes/form/tempmerge.php
index a25e01ec395..ebfd8e20abb 100644
--- a/classes/form/tempmerge.php
+++ b/classes/form/tempmerge.php
@@ -45,7 +45,7 @@ public function definition() {
         $namefields = $userfieldsapi->get_sql('u', false, '', '', false)->selects;
         $students = get_enrolled_users($context, 'mod/attendance:canbelisted', 0, 'u.id,'.$namefields.',u.email',
                                        'u.lastname, u.firstname', 0, 0, true);
-        $partarray = array();
+        $partarray = [];
         foreach ($students as $student) {
             $partarray[$student->id] = fullname($student).' ('.$student->email.')';
         }
diff --git a/classes/form/tempuseredit.php b/classes/form/tempuseredit.php
index b80fe0d8433..b96d5bbb09b 100644
--- a/classes/form/tempuseredit.php
+++ b/classes/form/tempuseredit.php
@@ -54,11 +54,11 @@ public function definition() {
         $mform->addRule('temail', 'Email', 'email', null, 'client');
         $mform->setType('temail', PARAM_EMAIL);
 
-        $buttonarray = array(
+        $buttonarray = [
             $mform->createElement('submit', 'submitbutton', get_string('edituser', 'attendance')),
             $mform->createElement('cancel'),
-        );
-        $mform->addGroup($buttonarray, 'buttonar', '', array(' '), false);
+        ];
+        $mform->addGroup($buttonarray, 'buttonar', '', [' '], false);
         $mform->closeHeaderBefore('submit');
     }
 
diff --git a/classes/form/updatesession.php b/classes/form/updatesession.php
index 6f04594c314..61bfd8fceef 100644
--- a/classes/form/updatesession.php
+++ b/classes/form/updatesession.php
@@ -45,11 +45,11 @@ public function definition() {
         $modcontext    = $this->_customdata['modcontext'];
         $sessionid     = $this->_customdata['sessionid'];
 
-        if (!$sess = $DB->get_record('attendance_sessions', array('id' => $sessionid) )) {
+        if (!$sess = $DB->get_record('attendance_sessions', ['id' => $sessionid] )) {
             error('No such session in this course');
         }
-        $attendancesubnet = $DB->get_field('attendance', 'subnet', array('id' => $sess->attendanceid));
-        $defopts = array('maxfiles' => EDITOR_UNLIMITED_FILES, 'noclean' => true, 'context' => $modcontext);
+        $attendancesubnet = $DB->get_field('attendance', 'subnet', ['id' => $sess->attendanceid]);
+        $defopts = ['maxfiles' => EDITOR_UNLIMITED_FILES, 'noclean' => true, 'context' => $modcontext];
         $sess = file_prepare_standard_editor($sess, 'description', $defopts, $modcontext, 'mod_attendance', 'session', $sess->id);
 
         $starttime = $sess->sessdate - usergetmidnight($sess->sessdate);
@@ -61,10 +61,10 @@ public function definition() {
         $endhour = floor($endtime / HOURSECS);
         $endminute = floor(($endtime - $endhour * HOURSECS) / MINSECS);
 
-        $data = array(
+        $data = [
             'sessiondate' => $sess->sessdate,
-            'sestime' => array('starthour' => $starthour, 'startminute' => $startminute,
-            'endhour' => $endhour, 'endminute' => $endminute),
+            'sestime' => ['starthour' => $starthour, 'startminute' => $startminute,
+            'endhour' => $endhour, 'endminute' => $endminute, ],
             'sdescription' => $sess->description_editor,
             'calendarevent' => $sess->calendarevent,
             'studentscanmark' => $sess->studentscanmark,
@@ -80,8 +80,8 @@ public function definition() {
             'includeqrcode' => $sess->includeqrcode,
             'rotateqrcode' => $sess->rotateqrcode,
             'automarkcmid' => $sess->automarkcmid,
-            'studentsearlyopentime' => $sess->studentsearlyopentime
-        );
+            'studentsearlyopentime' => $sess->studentsearlyopentime,
+        ];
         if ($sess->subnet == $attendancesubnet) {
             $data['usedefaultsubnet'] = 1;
         } else {
@@ -93,7 +93,7 @@ public function definition() {
         if ($sess->groupid == 0) {
             $strtype = get_string('commonsession', 'attendance');
         } else {
-            $groupname = $DB->get_field('groups', 'name', array('id' => $sess->groupid));
+            $groupname = $DB->get_field('groups', 'name', ['id' => $sess->groupid]);
             $strtype = get_string('group') . ': ' . $groupname;
         }
         $mform->addElement('static', 'sessiontypedescription', get_string('sessiontype', 'attendance'), $strtype);
@@ -113,7 +113,7 @@ public function definition() {
         $mform->setType('statusset', PARAM_INT);
 
         $mform->addElement('editor', 'sdescription', get_string('description', 'attendance'),
-                           array('rows' => 1, 'columns' => 80), $defopts);
+                           ['rows' => 1, 'columns' => 80], $defopts);
         $mform->setType('sdescription', PARAM_RAW);
 
         if (!empty(get_config('attendance', 'enablecalendar'))) {
@@ -187,14 +187,14 @@ public function definition() {
             $mform->hideif('autoassignstatus', 'studentscanmark', 'notchecked');
         }
 
-        $mgroup = array();
+        $mgroup = [];
         $mgroup[] = & $mform->createElement('text', 'subnet', get_string('requiresubnet', 'attendance'));
         $mform->setDefault('subnet', $this->_customdata['att']->subnet);
         $mgroup[] = & $mform->createElement('checkbox', 'usedefaultsubnet', get_string('usedefaultsubnet', 'attendance'));
         $mform->setDefault('usedefaultsubnet', 1);
         $mform->setType('subnet', PARAM_TEXT);
 
-        $mform->addGroup($mgroup, 'subnetgrp', get_string('requiresubnet', 'attendance'), array(' '), false);
+        $mform->addGroup($mgroup, 'subnetgrp', get_string('requiresubnet', 'attendance'), [' '], false);
         $mform->setAdvanced('subnetgrp');
         $mform->addHelpButton('subnetgrp', 'requiresubnet', 'attendance');
         $mform->hideif('subnet', 'usedefaultsubnet', 'checked');
@@ -202,14 +202,14 @@ public function definition() {
         $mform->addElement('hidden', 'automarkcompleted', '0');
         $mform->settype('automarkcompleted', PARAM_INT);
 
-        $mgroup3 = array();
+        $mgroup3 = [];
         $options = attendance_get_sharedipoptions();
         $mgroup3[] = & $mform->createElement('select', 'preventsharedip',
             get_string('preventsharedip', 'attendance'), $options);
         $mgroup3[] = & $mform->createElement('text', 'preventsharediptime',
             get_string('preventsharediptime', 'attendance'), '', 'test');
         $mform->addGroup($mgroup3, 'preventsharedgroup',
-            get_string('preventsharedip', 'attendance'), array(' '), false);
+            get_string('preventsharedip', 'attendance'), [' '], false);
         $mform->addHelpButton('preventsharedgroup', 'preventsharedip', 'attendance');
         $mform->setAdvanced('preventsharedgroup');
         $mform->setType('preventsharediptime', PARAM_INT);
@@ -249,7 +249,7 @@ public function validation($data, $files) {
             FROM {attendance_statuses}
             WHERE deleted = 0 AND (attendanceid = 0 or attendanceid = ?)
             AND setnumber = ? AND setunmarked = 1';
-            $params = array($cm->instance, $data['statusset']);
+            $params = [$cm->instance, $data['statusset']];
             if (!$DB->record_exists_sql($sql, $params)) {
                 $errors['automark'] = get_string('noabsentstatusset', 'attendance');
             }
diff --git a/classes/import/marksessions.php b/classes/import/marksessions.php
index 8bc7b4da869..316a21770dc 100644
--- a/classes/import/marksessions.php
+++ b/classes/import/marksessions.php
@@ -43,10 +43,10 @@ class marksessions {
     protected $error = '';
 
     /** @var array $sessions The sessions info */
-    protected $sessions = array();
+    protected $sessions = [];
 
     /** @var array $mappings The mappings info */
-    protected $mappings = array();
+    protected $mappings = [];
 
     /** @var int The id of the csv import */
     protected $importid = 0;
@@ -55,7 +55,7 @@ class marksessions {
     protected $importer = null;
 
     /** @var array $foundheaders */
-    protected $foundheaders = array();
+    protected $foundheaders = [];
 
     /** @var bool $useprogressbar Control whether importing should use progress bars or not. */
     protected $useprogressbar = false;
@@ -101,17 +101,17 @@ public function list_found_headers() {
      */
     protected function read_mapping_data($data) {
         if ($data) {
-            return array(
+            return [
                 'user' => $data->userfrom,
                 'scantime' => $data->scantime,
-                'status' => $data->status
-            );
+                'status' => $data->status,
+            ];
         } else {
-            return array(
+            return [
                 'user' => 0,
                 'scantime' => 1,
-                'status' => 2
-            );
+                'status' => 2,
+            ];
         }
     }
 
@@ -180,10 +180,10 @@ public function __construct($text = null, $att, $encoding = null, $delimiter = n
 
         $this->useprogressbar = $useprogressbar;
 
-        $sesslog = array();
+        $sesslog = [];
 
         $validusers = $this->att->get_users($this->att->pageparams->grouptype, 0);
-        $users = array();
+        $users = [];
 
         // Re-key validusers based on the identifier used by import.
         if (!empty($mappingdata) && $mappingdata->userto !== 'id') {
@@ -197,7 +197,7 @@ public function __construct($text = null, $att, $encoding = null, $delimiter = n
         }
 
         $statuses = $this->att->get_statuses();
-        $statusmap = array();
+        $statusmap = [];
         foreach ($statuses as $st) {
             $statusmap[$st->acronym] = $st->id;
         }
diff --git a/classes/import/sessions.php b/classes/import/sessions.php
index 1868bfb5cb0..2ecb6f1c03b 100644
--- a/classes/import/sessions.php
+++ b/classes/import/sessions.php
@@ -44,10 +44,10 @@ class sessions {
     protected $error = '';
 
     /** @var array $sessions The sessions info */
-    protected $sessions = array();
+    protected $sessions = [];
 
     /** @var array $mappings The mappings info */
-    protected $mappings = array();
+    protected $mappings = [];
 
     /** @var int The id of the csv import */
     protected $importid = 0;
@@ -56,7 +56,7 @@ class sessions {
     protected $importer = null;
 
     /** @var array $foundheaders */
-    protected $foundheaders = array();
+    protected $foundheaders = [];
 
     /** @var bool $useprogressbar Control whether importing should use progress bars or not. */
     protected $useprogressbar = false;
@@ -252,7 +252,7 @@ public function __construct($text = null, $encoding = null, $delimiter = null, $
         $this->useprogressbar = $useprogressbar;
         $domainid = 1;
 
-        $sessions = array();
+        $sessions = [];
 
         while ($row = $this->importer->next()) {
             // This structure mimics what the UI form returns.
@@ -485,20 +485,20 @@ public function import() {
         $okcount = 0;
 
         foreach ($this->sessions as $session) {
-            $groupids = array();
+            $groupids = [];
             // Check course shortname matches.
-            if ($DB->record_exists('course', array(
-                'shortname' => $session->course
-            ))) {
+            if ($DB->record_exists('course', [
+                'shortname' => $session->course,
+            ])) {
                 // Get course.
-                $course = $DB->get_record('course', array(
-                    'shortname' => $session->course
-                ), '*', MUST_EXIST);
+                $course = $DB->get_record('course', [
+                    'shortname' => $session->course,
+                ], '*', MUST_EXIST);
 
                 // Check course has activities.
-                if ($DB->record_exists('attendance', array(
-                    'course' => $course->id
-                ))) {
+                if ($DB->record_exists('attendance', [
+                    'course' => $course->id,
+                ])) {
                     // Translate group names to group IDs. They are unique per course.
                     if ($session->sessiontype === \mod_attendance_structure::SESSION_GROUP) {
                         foreach ($session->groups as $groupname) {
@@ -533,11 +533,11 @@ public function import() {
                         foreach ($sessions as $index => $sess) {
                             // Check for duplicate sessions.
                             if ($this->session_exists($sess, $att->id)) {
-                                mod_attendance_notifyqueue::notify_message(get_string('sessionduplicate', 'attendance', (array(
+                                mod_attendance_notifyqueue::notify_message(get_string('sessionduplicate', 'attendance', ([
                                     'course' => $session->course,
                                     'activity' => $cm->name,
-                                    'date' => construct_session_full_date_time($sess->sessdate, $sess->duration)
-                                ))));
+                                    'date' => construct_session_full_date_time($sess->sessdate, $sess->duration),
+                                ])));
                                 unset($sessions[$index]);
                             } else {
                                 $okcount ++;
@@ -565,13 +565,13 @@ public function import() {
         }
 
         // Trigger a sessions imported event.
-        $event = \mod_attendance\event\sessions_imported::create(array(
+        $event = \mod_attendance\event\sessions_imported::create([
             'objectid' => 0,
             'context' => \context_system::instance(),
-            'other' => array(
-                'count' => $okcount
-            )
-        ));
+            'other' => [
+                'count' => $okcount,
+            ],
+        ]);
 
         $event->trigger();
     }
@@ -589,7 +589,7 @@ private function session_exists(stdClass $session, $attid) {
         $check = ['attendanceid' => $attid,
                   'sessdate' => $session->sessdate,
                   'duration' => $session->duration,
-                  'groupid' => $session->groupid];
+                  'groupid' => $session->groupid, ];
         if ($DB->record_exists('attendance_sessions', $check)) {
             return true;
         }
diff --git a/classes/local/automark.php b/classes/local/automark.php
index dc9e61a5647..422ffffd71c 100644
--- a/classes/local/automark.php
+++ b/classes/local/automark.php
@@ -107,7 +107,7 @@ public static function session($session, $course, $cm, $attendance, $returnerror
                     $duration = get_config('attendance', 'studentscanmarksessiontimeend') * 60;
                 }
                 $timeend = $timestart + $duration;
-                $logusers = $DB->get_recordset_sql($sql, array($course->id, $timestart, $timeend));
+                $logusers = $DB->get_recordset_sql($sql, [$course->id, $timestart, $timeend]);
                 // Check if user access is in allowed subnet.
                 foreach ($logusers as $loguser) {
                     if (!empty($session->subnet) && !address_in_subnet($loguser->ip, $session->subnet)) {
@@ -170,7 +170,7 @@ public static function session($session, $course, $cm, $attendance, $returnerror
             // Get all unmarked students.
             $users = $att->get_users($session->groupid, 0);
 
-            $existinglog = $DB->get_recordset('attendance_log', array('sessionid' => $session->id));
+            $existinglog = $DB->get_recordset('attendance_log', ['sessionid' => $session->id]);
             $updated = 0;
 
             foreach ($existinglog as $log) {
@@ -247,13 +247,13 @@ public static function session($session, $course, $cm, $attendance, $returnerror
                     $att->update_users_grade(array_keys($users));
                 }
 
-                $params = array(
+                $params = [
                     'sessionid' => $att->pageparams->sessionid,
-                    'grouptype' => $att->pageparams->grouptype);
-                $event = \mod_attendance\event\attendance_taken::create(array(
+                    'grouptype' => $att->pageparams->grouptype, ];
+                $event = \mod_attendance\event\attendance_taken::create([
                     'objectid' => $att->id,
                     'context' => $att->context,
-                    'other' => $params));
+                    'other' => $params]);
                 $event->add_record_snapshot('course_modules', $att->cm);
                 $event->add_record_snapshot('attendance_sessions', $session);
                 $event->trigger();
diff --git a/classes/local/url_helpers.php b/classes/local/url_helpers.php
index 1e6eed7368d..64785b4bbcf 100644
--- a/classes/local/url_helpers.php
+++ b/classes/local/url_helpers.php
@@ -41,7 +41,7 @@ class url_helpers {
      * @return mixed
      */
     public static function url_take($att, $sessionid, $grouptype) {
-        $params = array('sessionid' => $sessionid);
+        $params = ['sessionid' => $sessionid];
         if (isset($grouptype)) {
             $params['grouptype'] = $grouptype;
         }
@@ -58,9 +58,9 @@ public static function url_take($att, $sessionid, $grouptype) {
      */
     public static function url_sessions($att, $sessionid=null, $action=null) {
         if (isset($sessionid) && isset($action)) {
-            $params = array('sessionid' => $sessionid, 'action' => $action);
+            $params = ['sessionid' => $sessionid, 'action' => $action];
         } else {
-            $params = array();
+            $params = [];
         }
 
         return $att->url_sessions($params);
@@ -72,7 +72,7 @@ public static function url_sessions($att, $sessionid=null, $action=null) {
      * @param array $params
      * @return mixed
      */
-    public static function url_view($att, $params=array()) {
+    public static function url_view($att, $params=[]) {
         return $att->url_view($params);
     }
 }
diff --git a/classes/manage_page_params.php b/classes/manage_page_params.php
index d18c6737eb2..6b575c3feb0 100644
--- a/classes/manage_page_params.php
+++ b/classes/manage_page_params.php
@@ -41,6 +41,6 @@ public function  __construct() {
      * @return array
      */
     public function get_significant_params() {
-        return array();
+        return [];
     }
 }
diff --git a/classes/notifyqueue.php b/classes/notifyqueue.php
index fb4e4ae0d7e..35dacdd01b8 100644
--- a/classes/notifyqueue.php
+++ b/classes/notifyqueue.php
@@ -81,7 +81,7 @@ private static function queue_message($message, $messagetype=\core\output\notifi
         global $SESSION;
 
         if (!isset($SESSION->mod_attendance_notifyqueue)) {
-            $SESSION->mod_attendance_notifyqueue = array();
+            $SESSION->mod_attendance_notifyqueue = [];
         }
         $m = new stdclass();
         $m->type = $messagetype;
diff --git a/classes/observer.php b/classes/observer.php
index c5307ba1a11..cd7ded9c57e 100644
--- a/classes/observer.php
+++ b/classes/observer.php
@@ -39,7 +39,7 @@ class mod_attendance_observer {
     public static function course_content_deleted(\core\event\course_content_deleted $event) {
         global $DB;
 
-        $attids = array_keys($DB->get_records('attendance', array('course' => $event->objectid), '', 'id'));
+        $attids = array_keys($DB->get_records('attendance', ['course' => $event->objectid], '', 'id'));
         $sessids = array_keys($DB->get_records_list('attendance_sessions', 'attendanceid', $attids, '', 'id'));
         if (attendance_existing_calendar_events_ids($sessids)) {
             attendance_delete_calendar_events($sessids);
diff --git a/classes/output/filter_controls.php b/classes/output/filter_controls.php
index 90998196731..6393fcf173f 100644
--- a/classes/output/filter_controls.php
+++ b/classes/output/filter_controls.php
@@ -114,7 +114,7 @@ public function __construct(mod_attendance_structure $att, $report = false) {
      * @param array $params
      * @return moodle_url
      */
-    public function url($params=array()) {
+    public function url($params=[]) {
         $params = array_merge($this->urlparams, $params);
 
         return new moodle_url($this->urlpath, $params);
@@ -133,7 +133,7 @@ public function url_path() {
      * @param array $params
      * @return array
      */
-    public function url_params($params=array()) {
+    public function url_params($params=[]) {
         $params = array_merge($this->urlparams, $params);
 
         return $params;
diff --git a/classes/output/mobile.php b/classes/output/mobile.php
index 4f408422887..0a9a17500d4 100644
--- a/classes/output/mobile.php
+++ b/classes/output/mobile.php
@@ -67,11 +67,11 @@ public static function mobile_view_activity($args) {
         $context = \context_module::instance($cm->id);
         require_capability('mod/attendance:view', $context);
 
-        $attendance    = $DB->get_record('attendance', array('id' => $cm->instance), '*', MUST_EXIST);
-        $course         = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
+        $attendance    = $DB->get_record('attendance', ['id' => $cm->instance], '*', MUST_EXIST);
+        $course         = $DB->get_record('course', ['id' => $cm->course], '*', MUST_EXIST);
         $config = get_config('attendance');
 
-        $data = array(); // Data to pass to renderer.
+        $data = []; // Data to pass to renderer.
         $data['cmid'] = $cmid;
         $data['courseid'] = $courseid;
         $data['attendance'] = $attendance;
@@ -90,7 +90,7 @@ public static function mobile_view_activity($args) {
         $pageparams->group = groups_get_activity_group($cm, true);
         $canseegroupsession = true;
         if (!empty($sessid) && (!empty($takenstatus) || $isteacher)) {
-            $session = $DB->get_record('attendance_sessions', array('id' => $sessid));
+            $session = $DB->get_record('attendance_sessions', ['id' => $sessid]);
             $pageparams->grouptype = $session->groupid;
             $pageparams->sessionid = $sessid;
 
@@ -130,11 +130,11 @@ public static function mobile_view_activity($args) {
         $timefrom = time() - $config->mobilesessionfrom;
         $timeto = time() + $config->mobilesessionto;
 
-        $data['sessions'] = array();
+        $data['sessions'] = [];
 
         $sessions = $DB->get_records_select('attendance_sessions',
             'attendanceid = ? AND sessdate > ? AND sessdate < ? ORDER BY sessdate',
-            array($attendance->id, $timefrom, $timeto));
+            [$attendance->id, $timefrom, $timeto]);
 
         if (!empty($sessions)) {
             $userdata = new user_data($att, $USER->id, true);
@@ -159,11 +159,11 @@ public static function mobile_view_activity($args) {
                 }
 
                 if ($isteacher || $canmark) {
-                    $html = array('time' => strip_tags(construct_session_full_date_time($sess->sessdate, $sess->duration)),
-                        'groupname' => '');
+                    $html = ['time' => strip_tags(construct_session_full_date_time($sess->sessdate, $sess->duration)),
+                        'groupname' => '', ];
                     if (!empty($sess->groupid)) {
                         // TODO In-efficient way to get group name - we should get all groups in one query.
-                        $html['groupname'] = $DB->get_field('groups', 'name', array('id' => $sess->groupid));
+                        $html['groupname'] = $DB->get_field('groups', 'name', ['id' => $sess->groupid]);
                     }
 
                     // Check if Status already recorded.
@@ -243,7 +243,7 @@ public static function mobile_view_activity($args) {
             }
         }
 
-        $summary = new \mod_attendance_summary($att->id, array($USER->id), $att->pageparams->startdate,
+        $summary = new \mod_attendance_summary($att->id, [$USER->id], $att->pageparams->startdate,
             $att->pageparams->enddate);
         $data['summary'] = $summary->get_all_sessions_summary_for($USER->id);
 
@@ -255,7 +255,7 @@ public static function mobile_view_activity($args) {
                 ],
             ],
             'javascript' => '',
-            'otherdata' => ''
+            'otherdata' => '',
         ];
     }
 
@@ -284,24 +284,24 @@ public static function mobile_user_form($args) {
         $context = \context_module::instance($cm->id);
         require_capability('mod/attendance:view', $context);
 
-        $attendance    = $DB->get_record('attendance', array('id' => $cm->instance), '*', MUST_EXIST);
-        $attforsession = $DB->get_record('attendance_sessions', array('id' => $sessid), '*', MUST_EXIST);
-        $course        = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
+        $attendance    = $DB->get_record('attendance', ['id' => $cm->instance], '*', MUST_EXIST);
+        $attforsession = $DB->get_record('attendance_sessions', ['id' => $sessid], '*', MUST_EXIST);
+        $course        = $DB->get_record('course', ['id' => $cm->course], '*', MUST_EXIST);
 
         $pageparams = new \mod_attendance_sessions_page_params();
         $pageparams->sessionid = $sessid;
         $att = new \mod_attendance_structure($attendance, $cm, $course, $context, $pageparams);
 
-        $data = array(); // Data to pass to renderer.
+        $data = []; // Data to pass to renderer.
         $data['attendance'] = $attendance;
         $data['cmid'] = $cmid;
         $data['courseid'] = $courseid;
         $data['sessid'] = $sessid;
-        $data['messages'] = array();
+        $data['messages'] = [];
         $data['showmessage'] = false;
         $data['showstatuses'] = true;
         $data['showpassword'] = false;
-        $data['statuses'] = array();
+        $data['statuses'] = [];
         $data['disabledduetotime'] = false;
 
         list($canmark, $reason) = attendance_can_student_mark($attforsession, false);
@@ -331,7 +331,7 @@ public static function mobile_user_form($args) {
                     continue;
                     $data['disabledduetotime'] = true;
                 }
-                $data['statuses'][] = array('stid' => $status->id, 'description' => $status->description);
+                $data['statuses'][] = ['stid' => $status->id, 'description' => $status->description];
             }
             if (empty($data['statuses'])) {
                 $data['messages'][]['string'] = 'attendance_no_status';
@@ -340,7 +340,7 @@ public static function mobile_user_form($args) {
                 $data['showpassword'] = true;
                 if ($attforsession->autoassignstatus) {
                     // If this is an auto status - don't show the statuses, but show the form.
-                    $data['statuses'] = array();
+                    $data['statuses'] = [];
                 }
             }
         }
@@ -353,11 +353,11 @@ public static function mobile_user_form($args) {
                 [
                     'id' => 'main',
                     'html' => $OUTPUT->render_from_template("mod_attendance/mobile_user_form_$versionname", $data),
-                    'cache-view' => false
+                    'cache-view' => false,
                 ],
             ],
             'javascript' => '',
-            'otherdata' => ''
+            'otherdata' => '',
         ];
     }
 
@@ -386,27 +386,27 @@ public static function mobile_teacher_form($args) {
         $context = \context_module::instance($cm->id);
         require_capability('mod/attendance:takeattendances', $context);
 
-        $attendance    = $DB->get_record('attendance', array('id' => $cm->instance), '*', MUST_EXIST);
-        $course        = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
+        $attendance    = $DB->get_record('attendance', ['id' => $cm->instance], '*', MUST_EXIST);
+        $course        = $DB->get_record('course', ['id' => $cm->course], '*', MUST_EXIST);
 
         $pageparams = new \mod_attendance_sessions_page_params();
         $pageparams->sessionid = $sessid;
         $att = new \mod_attendance_structure($attendance, $cm, $course, $context, $pageparams);
 
-        $data = array(); // Data to pass to renderer.
+        $data = []; // Data to pass to renderer.
         $data['attendance'] = $attendance;
         $data['cmid'] = $cmid;
         $data['courseid'] = $courseid;
         $data['sessid'] = $sessid;
-        $data['messages'] = array();
+        $data['messages'] = [];
         $data['showmessage'] = false;
-        $data['statuses'] = array();
+        $data['statuses'] = [];
         $data['btnargs'] = ''; // Stores list of userid status args that should be added to form post.
 
         $statuses = $att->get_statuses();
-        $otherdata = array();
+        $otherdata = [];
         $existinglog = $DB->get_records('attendance_log',
-            array('sessionid' => $sessid), '', 'studentid,statusid');
+            ['sessionid' => $sessid], '', 'studentid,statusid');
         foreach ($existinglog as $log) {
             if (!empty($log->statusid)) {
                 $otherdata['status'.$log->studentid] = $log->statusid;
@@ -414,18 +414,18 @@ public static function mobile_teacher_form($args) {
         }
 
         foreach ($statuses as $status) {
-            $data['statuses'][] = array('stid' => $status->id, 'acronym' => $status->acronym,
-                'description' => $status->description);
+            $data['statuses'][] = ['stid' => $status->id, 'acronym' => $status->acronym,
+                'description' => $status->description, ];
         }
 
-        $data['users'] = array();
+        $data['users'] = [];
         $data['selectall'] = '';
         $users = $att->get_users($att->get_session_info($sessid)->groupid, 0);
         foreach ($users as $user) {
             $userpicture = new \user_picture($user);
             $userpicture->size = 1; // Size f1.
             $profileimageurl = $userpicture->get_url($PAGE)->out(false);
-            $data['users'][] = array('userid' => $user->id, 'fullname' => $user->fullname, 'profileimageurl' => $profileimageurl);
+            $data['users'][] = ['userid' => $user->id, 'fullname' => $user->fullname, 'profileimageurl' => $profileimageurl];
             // Generate args to use in submission button here.
             $data['btnargs'] .= ', status'. $user->id. ': CONTENT_OTHERDATA.status'. $user->id;
             // Really Hacky way to do a select-all. This really needs to be moved into a JS function within the app.
@@ -440,11 +440,11 @@ public static function mobile_teacher_form($args) {
                 [
                     'id' => 'main',
                     'html' => $OUTPUT->render_from_template("mod_attendance/mobile_teacher_form_$versionname", $data),
-                    'cache-view' => false
+                    'cache-view' => false,
                 ],
             ],
             'javascript' => '',
-            'otherdata' => $otherdata
+            'otherdata' => $otherdata,
         ];
     }
 
diff --git a/classes/output/password_icon.php b/classes/output/password_icon.php
index 0d4b3b4894e..b8f2de7e517 100644
--- a/classes/output/password_icon.php
+++ b/classes/output/password_icon.php
@@ -97,7 +97,7 @@ public function export_for_template(renderer_base $output) {
         $data->linktext = '';
         $data->title = $title;
         $data->url = (new moodle_url('/mod/attendance/password.php', [
-            'session' => $this->sessionid]))->out(false);
+            'session' => $this->sessionid, ]))->out(false);
 
         $data->ltr = !right_to_left();
         return $data;
diff --git a/classes/output/preferences_data.php b/classes/output/preferences_data.php
index 211785059fd..2f47de284c3 100644
--- a/classes/output/preferences_data.php
+++ b/classes/output/preferences_data.php
@@ -63,7 +63,7 @@ public function __construct(mod_attendance_structure $att, $errors) {
      * @param bool $significantparams
      * @return moodle_url
      */
-    public function url($params=array(), $significantparams=true) {
+    public function url($params=[], $significantparams=true) {
         if ($significantparams) {
             $params = array_merge($this->att->pageparams->get_significant_params(), $params);
         }
diff --git a/classes/output/renderer.php b/classes/output/renderer.php
index da1e12e0682..b1d04e0144d 100644
--- a/classes/output/renderer.php
+++ b/classes/output/renderer.php
@@ -102,7 +102,7 @@ protected function render_sess_group_selector(filter_controls $fcontrols) {
                     $select->label = get_string('sessions', 'attendance');
                     $output = $this->output->render($select);
 
-                    return html_writer::tag('div', $output, array('class' => 'groupselector m-0'));
+                    return html_writer::tag('div', $output, ['class' => 'groupselector m-0']);
                 }
                 break;
             case mod_attendance_page_with_filter_controls::SELECTOR_GROUP:
@@ -137,8 +137,8 @@ protected function render_paging_controls(filter_controls $fcontrols) {
         $numberofpages = ceil($totalusers / $fcontrols->pageparams->perpage);
 
         if ($fcontrols->pageparams->page > 1) {
-            $pagingcontrols .= html_writer::link($fcontrols->url(array('curdate' => $fcontrols->curdate,
-                                                                       'page' => $fcontrols->pageparams->page - 1)),
+            $pagingcontrols .= html_writer::link($fcontrols->url(['curdate' => $fcontrols->curdate,
+                                                                       'page' => $fcontrols->pageparams->page - 1, ]),
                                                                  $this->output->larrow());
         }
         $a = new stdClass();
@@ -146,10 +146,10 @@ protected function render_paging_controls(filter_controls $fcontrols) {
         $a->numpages = $numberofpages;
         $text = get_string('pageof', 'attendance', $a);
         $pagingcontrols .= html_writer::tag('span', $text,
-                                            array('class' => 'attbtn'));
+                                            ['class' => 'attbtn']);
         if ($fcontrols->pageparams->page < $numberofpages) {
-            $pagingcontrols .= html_writer::link($fcontrols->url(array('curdate' => $fcontrols->curdate,
-                                                                       'page' => $fcontrols->pageparams->page + 1)),
+            $pagingcontrols .= html_writer::link($fcontrols->url(['curdate' => $fcontrols->curdate,
+                                                                       'page' => $fcontrols->pageparams->page + 1, ]),
                                                                  $this->output->rarrow());
         }
 
@@ -167,42 +167,42 @@ protected function render_curdate_controls(filter_controls $fcontrols) {
 
         $curdatecontrols = '';
         if ($fcontrols->curdatetxt) {
-            $this->page->requires->strings_for_js(array('calclose'), 'attendance');
-            $jsvals = array(
+            $this->page->requires->strings_for_js(['calclose'], 'attendance');
+            $jsvals = [
                     'cal_months'    => explode(',', get_string('calmonths', 'attendance')),
                     'cal_week_days' => explode(',', get_string('calweekdays', 'attendance')),
                     'cal_start_weekday' => $CFG->calendar_startwday,
-                    'cal_cur_date'  => $fcontrols->curdate);
+                    'cal_cur_date'  => $fcontrols->curdate, ];
             $curdatecontrols = html_writer::script(js_writer::set_variable('M.attendance', $jsvals));
 
             $this->page->requires->js('/mod/attendance/calendar.js');
 
-            $curdatecontrols .= html_writer::link($fcontrols->url(array('curdate' => $fcontrols->prevcur)),
+            $curdatecontrols .= html_writer::link($fcontrols->url(['curdate' => $fcontrols->prevcur]),
                                                                          $this->output->larrow());
-            $params = array(
+            $params = [
                     'title' => get_string('calshow', 'attendance'),
                     'id'    => 'show',
                     'class' => 'btn btn-secondary',
-                    'type'  => 'button');
+                    'type'  => 'button', ];
             $buttonform = html_writer::tag('button', $fcontrols->curdatetxt, $params);
-            foreach ($fcontrols->url_params(array('curdate' => '')) as $name => $value) {
-                $params = array(
+            foreach ($fcontrols->url_params(['curdate' => '']) as $name => $value) {
+                $params = [
                         'type'  => 'hidden',
                         'id'    => $name,
                         'name'  => $name,
-                        'value' => $value);
+                        'value' => $value, ];
                 $buttonform .= html_writer::empty_tag('input', $params);
             }
-            $params = array(
+            $params = [
                     'id'        => 'currentdate',
                     'action'    => $fcontrols->url_path(),
-                    'method'    => 'post'
-            );
+                    'method'    => 'post',
+            ];
 
             $buttonform = html_writer::tag('form', $buttonform, $params);
             $curdatecontrols .= $buttonform;
 
-            $curdatecontrols .= html_writer::link($fcontrols->url(array('curdate' => $fcontrols->nextcur)),
+            $curdatecontrols .= html_writer::link($fcontrols->url(['curdate' => $fcontrols->nextcur]),
                                                                          $this->output->rarrow());
         }
 
@@ -217,18 +217,18 @@ protected function render_curdate_controls(filter_controls $fcontrols) {
      */
     protected function render_grouping_controls(filter_controls $fcontrols) {
         if ($fcontrols->pageparams->mode === mod_attendance_view_page_params::MODE_ALL_SESSIONS) {
-            $groupoptions = array(
+            $groupoptions = [
                 'date' => get_string('sessionsbydate', 'attendance'),
                 'activity' => get_string('sessionsbyactivity', 'attendance'),
-                'course' => get_string('sessionsbycourse', 'attendance')
-            );
+                'course' => get_string('sessionsbycourse', 'attendance'),
+            ];
             $groupcontrols = get_string('groupsessionsby', 'attendance') . ":";
             foreach ($groupoptions as $key => $opttext) {
                 if ($key != $fcontrols->pageparams->groupby) {
-                    $link = html_writer::link($fcontrols->url(array('groupby' => $key)), $opttext);
-                    $groupcontrols .= html_writer::tag('span', $link, array('class' => 'attbtn'));
+                    $link = html_writer::link($fcontrols->url(['groupby' => $key]), $opttext);
+                    $groupcontrols .= html_writer::tag('span', $link, ['class' => 'attbtn']);
                 } else {
-                    $groupcontrols .= html_writer::tag('span', $opttext, array('class' => 'attcurbtn'));
+                    $groupcontrols .= html_writer::tag('span', $opttext, ['class' => 'attcurbtn']);
                 }
             }
             return html_writer::tag('div', $groupcontrols);
@@ -244,17 +244,17 @@ protected function render_grouping_controls(filter_controls $fcontrols) {
      */
     protected function render_course_controls(filter_controls $fcontrols) {
         if ($fcontrols->pageparams->mode === mod_attendance_view_page_params::MODE_ALL_SESSIONS) {
-            $courseoptions = array(
+            $courseoptions = [
                 'all' => get_string('sessionsallcourses', 'attendance'),
-                'current' => get_string('sessionscurrentcourses', 'attendance')
-            );
+                'current' => get_string('sessionscurrentcourses', 'attendance'),
+            ];
             $coursecontrols = "";
             foreach ($courseoptions as $key => $opttext) {
                 if ($key != $fcontrols->pageparams->sesscourses) {
-                    $link = html_writer::link($fcontrols->url(array('sesscourses' => $key)), $opttext);
-                    $coursecontrols .= html_writer::tag('span', $link, array('class' => 'attbtn'));
+                    $link = html_writer::link($fcontrols->url(['sesscourses' => $key]), $opttext);
+                    $coursecontrols .= html_writer::tag('span', $link, ['class' => 'attbtn']);
                 } else {
-                    $coursecontrols .= html_writer::tag('span', $opttext, array('class' => 'attcurbtn'));
+                    $coursecontrols .= html_writer::tag('span', $opttext, ['class' => 'attcurbtn']);
                 }
             }
             return html_writer::tag('div', $coursecontrols);
@@ -284,10 +284,10 @@ protected function render_view_controls(filter_controls $fcontrols) {
         $viewcontrols = '';
         foreach ($views as $key => $sview) {
             if ($key != $fcontrols->pageparams->view) {
-                $link = html_writer::link($fcontrols->url(array('view' => $key)), $sview);
-                $viewcontrols .= html_writer::tag('span', $link, array('class' => 'attbtn'));
+                $link = html_writer::link($fcontrols->url(['view' => $key]), $sview);
+                $viewcontrols .= html_writer::tag('span', $link, ['class' => 'attbtn']);
             } else {
-                $viewcontrols .= html_writer::tag('span', $sview, array('class' => 'attcurbtn'));
+                $viewcontrols .= html_writer::tag('span', $sview, ['class' => 'attcurbtn']);
             }
         }
 
@@ -302,7 +302,7 @@ protected function render_view_controls(filter_controls $fcontrols) {
      */
     protected function render_manage_data(manage_data $sessdata) {
         $o = $this->render_sess_manage_table($sessdata) . $this->render_sess_manage_control($sessdata);
-        $o = html_writer::tag('form', $o, array('method' => 'post', 'action' => $sessdata->url_sessions()->out()));
+        $o = html_writer::tag('form', $o, ['method' => 'post', 'action' => $sessdata->url_sessions()->out()]);
         $o = $this->output->container($o, 'generalbox attwidth');
         $o = $this->output->container($o, 'attsessions_manage_table');
 
@@ -320,11 +320,11 @@ protected function render_sess_manage_table(manage_data $sessdata) {
 
         $table = new html_table();
         $table->head = [
-                html_writer::checkbox('cb_selector', 0, false, '', array('id' => 'cb_selector')),
+                html_writer::checkbox('cb_selector', 0, false, '', ['id' => 'cb_selector']),
                 get_string('date', 'attendance'),
                 get_string('time', 'attendance'),
                 get_string('sessiontypeshort', 'attendance'),
-                get_string('description', 'attendance')
+                get_string('description', 'attendance'),
         ];
         $table->align = ['center', 'right', '', '', 'left'];
         $table->size = ['1px', '1px', '1px', '', '*'];
@@ -352,7 +352,7 @@ protected function render_sess_manage_table(manage_data $sessdata) {
 
             $dta = $this->construct_date_time_actions($sessdata, $sess);
             $table->data[$sess->id][] = html_writer::checkbox('sessid[]', $sess->id, false, '',
-                                                              array('class' => 'attendancesesscheckbox'));
+                                                              ['class' => 'attendancesesscheckbox']);
             $table->data[$sess->id][] = $dta['date'];
             $table->data[$sess->id][] = $dta['time'];
             if ($sess->groupid) {
@@ -424,8 +424,8 @@ private function construct_date_time_actions(manage_data $sessdata, $sess) {
                 $url = $sessdata->url_take($sess->id, $sess->groupid);
                 $title = get_string('changeattendance', 'attendance');
 
-                $date = html_writer::link($url, $date, array('title' => $title));
-                $time = html_writer::link($url, $time, array('title' => $title));
+                $date = html_writer::link($url, $date, ['title' => $title]);
+                $time = html_writer::link($url, $time, ['title' => $title]);
 
                 $actions .= $this->output->action_icon($url, new pix_icon('redo', $title, 'attendance'));
             } else {
@@ -450,7 +450,7 @@ private function construct_date_time_actions(manage_data $sessdata, $sess) {
             $actions .= $this->output->action_icon($url, new pix_icon('t/delete', $title));
         }
 
-        return array('date' => $date, 'time' => $time, 'actions' => $actions);
+        return ['date' => $date, 'time' => $time, 'actions' => $actions];
     }
 
     /**
@@ -463,30 +463,30 @@ protected function render_sess_manage_control(manage_data $sessdata) {
         $table = new html_table();
         $table->attributes['class'] = ' ';
         $table->width = '100%';
-        $table->align = array('left', 'right');
+        $table->align = ['left', 'right'];
 
         $table->data[0][] = $this->output->help_icon('hiddensessions', 'attendance',
                 get_string('hiddensessions', 'attendance').': '.$sessdata->hiddensessionscount);
 
         if (has_capability('mod/attendance:manageattendances', $sessdata->att->context)) {
             if ($sessdata->hiddensessionscount > 0) {
-                $attributes = array(
+                $attributes = [
                         'type'  => 'submit',
                         'name'  => 'deletehiddensessions',
                         'class' => 'btn btn-secondary',
-                        'value' => get_string('deletehiddensessions', 'attendance'));
+                        'value' => get_string('deletehiddensessions', 'attendance'), ];
                 $table->data[1][] = html_writer::empty_tag('input', $attributes);
             }
 
-            $options = array(mod_attendance_sessions_page_params::ACTION_DELETE_SELECTED => get_string('delete'),
-                mod_attendance_sessions_page_params::ACTION_CHANGE_DURATION => get_string('changeduration', 'attendance'));
+            $options = [mod_attendance_sessions_page_params::ACTION_DELETE_SELECTED => get_string('delete'),
+                mod_attendance_sessions_page_params::ACTION_CHANGE_DURATION => get_string('changeduration', 'attendance'), ];
 
             $controls = html_writer::select($options, 'action');
-            $attributes = array(
+            $attributes = [
                     'type'  => 'submit',
                     'name'  => 'ok',
                     'value' => get_string('ok'),
-                    'class' => 'btn btn-secondary');
+                    'class' => 'btn btn-secondary', ];
             $controls .= html_writer::empty_tag('input', $attributes);
         } else {
             $controls = get_string('youcantdo', 'attendance'); // You can't do anything.
@@ -510,23 +510,23 @@ protected function render_take_data(take_data $takedata) {
         } else {
             $table .= $this->render_attendance_take_grid($takedata);
         }
-        $table .= html_writer::input_hidden_params($takedata->url(array('sesskey' => sesskey(),
+        $table .= html_writer::input_hidden_params($takedata->url(['sesskey' => sesskey(),
                                                                         'page' => $takedata->pageparams->page,
-                                                                        'perpage' => $takedata->pageparams->perpage)));
+                                                                        'perpage' => $takedata->pageparams->perpage, ]));
         $table .= html_writer::end_div();
-        $params = array(
+        $params = [
                 'type'  => 'submit',
                 'class' => 'btn btn-primary',
-                'value' => get_string('saveandshownext', 'attendance'));
+                'value' => get_string('saveandshownext', 'attendance'), ];
         $table .= html_writer::tag('center', html_writer::empty_tag('input', $params));
-        $table = html_writer::tag('form', $table, array('method' => 'post', 'action' => $takedata->url_path(),
-                                                        'id' => 'attendancetakeform'));
+        $table = html_writer::tag('form', $table, ['method' => 'post', 'action' => $takedata->url_path(),
+                                                        'id' => 'attendancetakeform']);
 
         foreach ($takedata->statuses as $status) {
             $sessionstats[$status->id] = 0;
         }
         // Calculate the sum of statuses for each user.
-        $sessionstats[] = array();
+        $sessionstats[] = [];
         foreach ($takedata->sessionlog as $userlog) {
             foreach ($takedata->statuses as $status) {
                 if ($userlog->statusid == $status->id && in_array($userlog->studentid, array_keys($takedata->users))) {
@@ -551,9 +551,9 @@ protected function render_take_data(take_data $takedata) {
      */
     protected function render_attendance_take_controls(take_data $takedata) {
 
-        $urlparams = array('id' => $takedata->cm->id,
+        $urlparams = ['id' => $takedata->cm->id,
             'sessionid' => $takedata->pageparams->sessionid,
-            'grouptype' => $takedata->pageparams->grouptype);
+            'grouptype' => $takedata->pageparams->grouptype, ];
         $url = new moodle_url('/mod/attendance/import/marksessions.php', $urlparams);
         $return = $this->output->single_button($url, get_string('uploadattendance', 'attendance'));
         if (!empty($takedata->sessioninfo->automark) &&
@@ -564,7 +564,7 @@ protected function render_attendance_take_controls(take_data $takedata) {
                    ($takedata->sessioninfo->sessdate + $takedata->sessioninfo->duration) < time()))) {
             $urlparams = ['id' => $takedata->cm->id,
                           'sessionid' => $takedata->pageparams->sessionid,
-                          'grouptype' => $takedata->pageparams->grouptype];
+                          'grouptype' => $takedata->pageparams->grouptype, ];
             $url = new moodle_url('/mod/attendance/automark.php', $urlparams);
             $return .= $this->output->single_button($url, get_string('manualtriggerauto', 'attendance'));
         }
@@ -638,7 +638,7 @@ private function construct_take_controls(take_data $takedata) {
             $numberofpages = ceil($totalusers / $usersperpage);
 
             if ($takedata->pageparams->page > 1) {
-                $controls .= html_writer::link($takedata->url(array('page' => $takedata->pageparams->page - 1)),
+                $controls .= html_writer::link($takedata->url(['page' => $takedata->pageparams->page - 1]),
                                                               $this->output->larrow());
             }
             $a = new stdClass();
@@ -646,10 +646,10 @@ private function construct_take_controls(take_data $takedata) {
             $a->numpages = $numberofpages;
             $text = get_string('pageof', 'attendance', $a);
             $controls .= html_writer::tag('span', $text,
-                                          array('class' => 'attbtn'));
+                                          ['class' => 'attbtn']);
             if ($takedata->pageparams->page < $numberofpages) {
-                $controls .= html_writer::link($takedata->url(array('page' => $takedata->pageparams->page + 1,
-                            'perpage' => $takedata->pageparams->perpage)), $this->output->rarrow());
+                $controls .= html_writer::link($takedata->url(['page' => $takedata->pageparams->page + 1,
+                            'perpage' => $takedata->pageparams->perpage, ]), $this->output->rarrow());
             }
         }
 
@@ -661,29 +661,29 @@ private function construct_take_controls(take_data $takedata) {
 
         $controls .= html_writer::empty_tag('br');
 
-        $options = array(
+        $options = [
             mod_attendance_take_page_params::SORTED_LIST   => get_string('sortedlist', 'attendance'),
-            mod_attendance_take_page_params::SORTED_GRID   => get_string('sortedgrid', 'attendance'));
+            mod_attendance_take_page_params::SORTED_GRID   => get_string('sortedgrid', 'attendance'), ];
         $select = new single_select($takedata->url(), 'viewmode', $options, $takedata->pageparams->viewmode, null);
         $select->set_label(get_string('viewmode', 'attendance'));
         $select->class = 'singleselect inline';
         $controls .= $this->output->render($select);
 
         if ($takedata->pageparams->viewmode == mod_attendance_take_page_params::SORTED_LIST) {
-            $options = array(
+            $options = [
                     0 => get_string('donotusepaging', 'attendance'),
-                   get_config('attendance', 'resultsperpage') => get_config('attendance', 'resultsperpage'));
+                   get_config('attendance', 'resultsperpage') => get_config('attendance', 'resultsperpage'), ];
             $select = new single_select($takedata->url(), 'perpage', $options, $takedata->pageparams->perpage, null);
             $select->class = 'singleselect inline';
             $controls .= $this->output->render($select);
         }
 
         if ($takedata->pageparams->viewmode == mod_attendance_take_page_params::SORTED_GRID) {
-            $options = array (1 => '1 '.get_string('column', 'attendance'), '2 '.get_string('columns', 'attendance'),
+            $options =  [1 => '1 '.get_string('column', 'attendance'), '2 '.get_string('columns', 'attendance'),
                                    '3 '.get_string('columns', 'attendance'), '4 '.get_string('columns', 'attendance'),
                                    '5 '.get_string('columns', 'attendance'), '6 '.get_string('columns', 'attendance'),
                                    '7 '.get_string('columns', 'attendance'), '8 '.get_string('columns', 'attendance'),
-                                   '9 '.get_string('columns', 'attendance'), '10 '.get_string('columns', 'attendance'));
+                                   '9 '.get_string('columns', 'attendance'), '10 '.get_string('columns', 'attendance'), ];
             $select = new single_select($takedata->url(), 'gridcols', $options, $takedata->pageparams->gridcols, null);
             $select->class = 'singleselect inline';
             $controls .= $this->output->render($select);
@@ -693,13 +693,13 @@ private function construct_take_controls(take_data $takedata) {
             $controls .= html_writer::empty_tag('br');
             $controls .= html_writer::empty_tag('br');
 
-            $options = array();
+            $options = [];
             foreach ($takedata->sessions4copy as $sess) {
                 $start = attendance_strftimehm($sess->sessdate);
                 $end = $sess->duration ? ' - '.attendance_strftimehm($sess->sessdate + $sess->duration) : '';
                 $options[$sess->id] = $start . $end;
             }
-            $select = new single_select($takedata->url(array(), array('copyfrom')), 'copyfrom', $options);
+            $select = new single_select($takedata->url([], ['copyfrom']), 'copyfrom', $options);
             $select->set_label(get_string('copyfrom', 'attendance'));
             $select->class = 'singleselect inline';
             $controls .= $this->output->render($select);
@@ -718,8 +718,8 @@ private function statusdropdown() {
         if (empty($pref)) {
             $pref = 'unselected';
         }
-        $options = array('all' => get_string('statusall', 'attendance'),
-            'unselected' => get_string('statusunselected', 'attendance'));
+        $options = ['all' => get_string('statusall', 'attendance'),
+            'unselected' => get_string('statusunselected', 'attendance'), ];
 
         $select = new \single_select(new \moodle_url('/'), 'setallstatus-select', $options,
             $pref, null, 'setallstatus-select');
@@ -737,14 +737,14 @@ private function statusdropdown() {
     protected function render_attendance_take_list(take_data $takedata) {
         global $CFG;
         $table = new html_table();
-        $table->head = array(
-                $this->construct_fullname_head($takedata)
-            );
-        $table->align = array('left');
-        $table->size = array('');
+        $table->head = [
+                $this->construct_fullname_head($takedata),
+            ];
+        $table->align = ['left'];
+        $table->size = [''];
         $table->wrap[0] = 'nowrap';
         // Check if extra useridentity fields need to be added.
-        $extrasearchfields = array();
+        $extrasearchfields = [];
         if (!empty($CFG->showuseridentity) && has_capability('moodle/site:viewuseridentity', $takedata->att->context)) {
             $extrasearchfields = explode(',', $CFG->showuseridentity);
         }
@@ -753,8 +753,8 @@ protected function render_attendance_take_list(take_data $takedata) {
             $table->align[] = 'left';
         }
         foreach ($takedata->statuses as $st) {
-            $table->head[] = html_writer::link("#", $st->acronym, array('id' => 'checkstatus'.$st->id,
-                'title' => get_string('setallstatusesto', 'attendance', $st->description)));
+            $table->head[] = html_writer::link("#", $st->acronym, ['id' => 'checkstatus'.$st->id,
+                'title' => get_string('setallstatusesto', 'attendance', $st->description)]);
             $table->align[] = 'center';
             $table->size[] = '20px';
             // JS to select all radios of this status and prevent default behaviour of # link.
@@ -790,13 +790,13 @@ protected function render_attendance_take_list(take_data $takedata) {
         $cell = new html_table_cell(html_writer::div($this->output->render($this->statusdropdown()), 'setallstatuses'));
         $row->cells[] = $cell;
         foreach ($takedata->statuses as $st) {
-            $attribs = array(
+            $attribs = [
                 'id' => 'radiocheckstatus'.$st->id,
                 'type' => 'radio',
                 'title' => get_string('setallstatusesto', 'attendance', $st->description),
                 'name' => 'setallstatuses',
                 'class' => "st{$st->id}",
-            );
+            ];
             $row->cells[] = html_writer::empty_tag('input', $attribs);
             // Select all radio buttons of the same status.
             $this->page->requires->js_amd_inline("
@@ -820,7 +820,7 @@ protected function render_attendance_take_list(take_data $takedata) {
         foreach ($takedata->users as $user) {
             $i++;
             $row = new html_table_row();
-            $fullname = html_writer::link($takedata->url_view(array('studentid' => $user->id)), fullname($user));
+            $fullname = html_writer::link($takedata->url_view(['studentid' => $user->id]), fullname($user));
             $fullname = $this->user_picture($user).$fullname; // Show different picture if it is a temporary user.
 
             $ucdata = $this->construct_take_user_controls($takedata, $user);
@@ -866,11 +866,11 @@ protected function render_attendance_take_grid(take_data $takedata) {
         $table->attributes['class'] = 'generaltable takegrid';
         $table->headspan = $takedata->pageparams->gridcols;
 
-        $head = array();
+        $head = [];
         $head[] = html_writer::div($this->output->render($this->statusdropdown()), 'setallstatuses');
         foreach ($takedata->statuses as $st) {
-            $head[] = html_writer::link("#", $st->acronym, array('id' => 'checkstatus'.$st->id,
-                                              'title' => get_string('setallstatusesto', 'attendance', $st->description)));
+            $head[] = html_writer::link("#", $st->acronym, ['id' => 'checkstatus'.$st->id,
+                                              'title' => get_string('setallstatusesto', 'attendance', $st->description)]);
             // JS to select all radios of this status and prevent default behaviour of # link.
             $this->page->requires->js_amd_inline("
                  require(['jquery', 'core_user/repository'], function($, UserRepository) {
@@ -892,10 +892,10 @@ protected function render_attendance_take_grid(take_data $takedata) {
         $i = 0;
         $row = new html_table_row();
         foreach ($takedata->users as $user) {
-            $celltext = $this->user_picture($user, array('size' => 100));  // Show different picture if it is a temporary user.
+            $celltext = $this->user_picture($user, ['size' => 100]);  // Show different picture if it is a temporary user.
             $celltext .= html_writer::empty_tag('br');
-            $fullname = html_writer::link($takedata->url_view(array('studentid' => $user->id)), fullname($user));
-            $celltext .= html_writer::tag('span', $fullname, array('class' => 'fullname'));
+            $fullname = html_writer::link($takedata->url_view(['studentid' => $user->id]), fullname($user));
+            $celltext .= html_writer::tag('span', $fullname, ['class' => 'fullname']);
             $celltext .= html_writer::empty_tag('br');
             $ucdata = $this->construct_take_user_controls($takedata, $user);
             $celltext .= is_array($ucdata['text']) ? implode('', $ucdata['text']) : $ucdata['text'];
@@ -942,8 +942,8 @@ private function construct_fullname_head($data) {
             $url->param('sort', ATT_SORT_LASTNAME);
             $lastname = html_writer::link($url, get_string('lastname'));
         } else {
-            $firstname = html_writer::link($data->url(array('sort' => ATT_SORT_FIRSTNAME)), get_string('firstname'));
-            $lastname = html_writer::link($data->url(array('sort' => ATT_SORT_LASTNAME)), get_string('lastname'));
+            $firstname = html_writer::link($data->url(['sort' => ATT_SORT_FIRSTNAME]), get_string('firstname'));
+            $lastname = html_writer::link($data->url(['sort' => ATT_SORT_LASTNAME]), get_string('lastname'));
         }
 
         if ($CFG->fullnamedisplay == 'lastname firstname') {
@@ -963,7 +963,7 @@ private function construct_fullname_head($data) {
      * @return array
      */
     private function construct_take_user_controls(take_data $takedata, $user) {
-        $celldata = array();
+        $celldata = [];
         if ($user->enrolmentend && $user->enrolmentend < $takedata->sessioninfo->sessdate) {
             $celldata['text'] = get_string('enrolmentend', 'attendance', userdate($user->enrolmentend, '%d.%m.%Y'));
             $celldata['colspan'] = count($takedata->statuses) + 1;
@@ -978,13 +978,13 @@ private function construct_take_user_controls(take_data $takedata, $user) {
                 $celldata['class'] = 'userwithoutdata';
             }
 
-            $celldata['text'] = array();
+            $celldata['text'] = [];
             foreach ($takedata->statuses as $st) {
-                $params = array(
+                $params = [
                         'type'  => 'radio',
                         'name'  => 'user'.$user->id,
                         'class' => 'st'.$st->id,
-                        'value' => $st->id);
+                        'value' => $st->id, ];
                 if (array_key_exists($user->id, $takedata->sessionlog) && $st->id == $takedata->sessionlog[$user->id]->statusid) {
                     $params['checked'] = '';
                 }
@@ -997,10 +997,10 @@ private function construct_take_user_controls(take_data $takedata, $user) {
 
                 $celldata['text'][] = $input;
             }
-            $params = array(
+            $params = [
                     'type'  => 'text',
                     'name'  => 'remarks'.$user->id,
-                    'maxlength' => 255);
+                    'maxlength' => 255, ];
             if (array_key_exists($user->id, $takedata->sessionlog)) {
                 $params['value'] = $takedata->sessionlog[$user->id]->remarks;
             }
@@ -1024,7 +1024,7 @@ private function construct_take_user_controls(take_data $takedata, $user) {
      * @return array
      */
     private function construct_take_session_controls(take_data $takedata, $user) {
-        $celldata = array();
+        $celldata = [];
         $celldata['remarks'] = '';
         if ($user->enrolmentend && $user->enrolmentend < $takedata->sessioninfo->sessdate) {
             $celldata['text'] = get_string('enrolmentend', 'attendance', userdate($user->enrolmentend, '%d.%m.%Y'));
@@ -1040,13 +1040,13 @@ private function construct_take_session_controls(take_data $takedata, $user) {
                 $celldata['class'] = 'userwithoutdata';
             }
 
-            $celldata['text'] = array();
+            $celldata['text'] = [];
             foreach ($takedata->statuses as $st) {
-                $params = array(
+                $params = [
                         'type'  => 'radio',
                         'name'  => 'user'.$user->id.'sess'.$takedata->sessioninfo->id,
                         'class' => 'st'.$st->id,
-                        'value' => $st->id);
+                        'value' => $st->id, ];
                 if (array_key_exists($user->id, $takedata->sessionlog) && $st->id == $takedata->sessionlog[$user->id]->statusid) {
                     $params['checked'] = '';
                 }
@@ -1059,10 +1059,10 @@ private function construct_take_session_controls(take_data $takedata, $user) {
 
                 $celldata['text'][] = $input;
             }
-            $params = array(
+            $params = [
                     'type'  => 'text',
                     'name'  => 'remarks'.$user->id.'sess'.$takedata->sessioninfo->id,
-                    'maxlength' => 255);
+                    'maxlength' => 255, ];
             if (array_key_exists($user->id, $takedata->sessionlog)) {
                 $params['value'] = $takedata->sessionlog[$user->id]->remarks;
             }
@@ -1103,9 +1103,9 @@ protected function render_user_data(user_data $userdata) {
             $table = new html_table();
 
             $table->attributes['class'] = 'userinfobox';
-            $table->colclasses = array('left side', '');
+            $table->colclasses = ['left side', ''];
             // Show different picture if it is a temporary user.
-            $table->data[0][] = $this->user_picture($userdata->user, array('size' => 100));
+            $table->data[0][] = $this->user_picture($userdata->user, ['size' => 100]);
             $table->data[0][] = $this->construct_user_data($userdata);
 
             $o .= html_writer::table($table);
@@ -1121,23 +1121,23 @@ protected function render_user_data(user_data $userdata) {
      * @return string
      */
     protected function render_user_report_tabs(user_data $userdata) {
-        $tabs = array();
+        $tabs = [];
 
         $tabs[] = new tabobject(mod_attendance_view_page_params::MODE_THIS_COURSE,
-                        $userdata->url()->out(true, array('mode' => mod_attendance_view_page_params::MODE_THIS_COURSE)),
+                        $userdata->url()->out(true, ['mode' => mod_attendance_view_page_params::MODE_THIS_COURSE]),
                         get_string('thiscourse', 'attendance'));
 
         // Skip the 'all courses' and 'all sessions' tabs for 'temporary' users.
         if ($userdata->user->type == 'standard') {
             $tabs[] = new tabobject(mod_attendance_view_page_params::MODE_ALL_COURSES,
-                            $userdata->url()->out(true, array('mode' => mod_attendance_view_page_params::MODE_ALL_COURSES)),
+                            $userdata->url()->out(true, ['mode' => mod_attendance_view_page_params::MODE_ALL_COURSES]),
                             get_string('allcourses', 'attendance'));
             $tabs[] = new tabobject(mod_attendance_view_page_params::MODE_ALL_SESSIONS,
-                            $userdata->url()->out(true, array('mode' => mod_attendance_view_page_params::MODE_ALL_SESSIONS)),
+                            $userdata->url()->out(true, ['mode' => mod_attendance_view_page_params::MODE_ALL_SESSIONS]),
                             get_string('allsessions', 'attendance'));
         }
 
-        return print_tabs(array($tabs), $userdata->pageparams->mode, null, null, true);
+        return print_tabs([$tabs], $userdata->pageparams->mode, null, null, true);
     }
 
     /**
@@ -1167,7 +1167,7 @@ private function construct_user_data(user_data $userdata) {
             $o .= html_writer::start_div('allsessionssummary row');
             $o .= html_writer::start_div('userinfo col-auto mr-xl-auto');
             $o .= html_writer::start_div('float-left');
-            $o .= $this->user_picture($userdata->user, array('size' => 100, 'class' => 'userpicture float-left'));
+            $o .= $this->user_picture($userdata->user, ['size' => 100, 'class' => 'userpicture float-left']);
             $o .= html_writer::end_div();
             $o .= html_writer::start_div('float-right');
             $o .= $allsessions->summary;
@@ -1180,25 +1180,25 @@ private function construct_user_data(user_data $userdata) {
             $o .= $allsessions->detail;
         } else {
             $table = new html_table();
-            $table->head  = array(get_string('course'),
+            $table->head  = [get_string('course'),
                 get_string('pluginname', 'mod_attendance'),
                 get_string('sessionscompleted', 'attendance'),
                 get_string('pointssessionscompleted', 'attendance'),
-                get_string('percentagesessionscompleted', 'attendance'));
-            $table->align = array('left', 'left', 'center', 'center', 'center');
-            $table->colclasses = array('colcourse', 'colatt', 'colsessionscompleted',
-                                       'colpointssessionscompleted', 'colpercentagesessionscompleted');
+                get_string('percentagesessionscompleted', 'attendance'), ];
+            $table->align = ['left', 'left', 'center', 'center', 'center'];
+            $table->colclasses = ['colcourse', 'colatt', 'colsessionscompleted',
+                                       'colpointssessionscompleted', 'colpercentagesessionscompleted', ];
 
             $table2 = clone($table); // Duplicate table for ungraded sessions.
             $totalattendance = 0;
             $totalpercentage = 0;
             foreach ($userdata->coursesatts as $ca) {
                 $row = new html_table_row();
-                $courseurl = new moodle_url('/course/view.php', array('id' => $ca->courseid));
+                $courseurl = new moodle_url('/course/view.php', ['id' => $ca->courseid]);
                 $row->cells[] = html_writer::link($courseurl, $ca->coursefullname);
-                $attendanceurl = new moodle_url('/mod/attendance/view.php', array('id' => $ca->cmid,
+                $attendanceurl = new moodle_url('/mod/attendance/view.php', ['id' => $ca->cmid,
                                                                                       'studentid' => $userdata->user->id,
-                                                                                      'view' => ATT_VIEW_ALL));
+                                                                                      'view' => ATT_VIEW_ALL]);
                 $row->cells[] = html_writer::link($attendanceurl, $ca->attname);
                 $usersummary = new stdClass();
                 if (isset($userdata->summary[$ca->attid])) {
@@ -1236,7 +1236,7 @@ private function construct_user_data(user_data $userdata) {
 
             $col2 = new html_table_cell($average);
             $col2->style = 'text-align: center';
-            $row->cells = array($col, $col2);
+            $row->cells = [$col, $col2];
             $table->data[] = $row;
 
             if (!empty($table2->data) && !empty($table->data)) {
@@ -1276,10 +1276,10 @@ private function construct_user_sessions_log(user_data $userdata) {
 
         $table = new html_table();
         $table->attributes['class'] = 'generaltable attwidth boxaligncenter';
-        $table->head = array();
-        $table->align = array();
-        $table->size = array();
-        $table->colclasses = array();
+        $table->head = [];
+        $table->align = [];
+        $table->size = [];
+        $table->colclasses = [];
         if (!$shortform) {
             $table->head[] = get_string('sessiontypeshort', 'attendance');
             $table->align[] = '';
@@ -1289,9 +1289,9 @@ private function construct_user_sessions_log(user_data $userdata) {
         $table->head[] = get_string('date');
         $table->head[] = get_string('description', 'attendance');
 
-        $table->align = array_merge($table->align, array('', 'left'));
-        $table->colclasses = array_merge($table->colclasses, array('datecol', 'desccol'));
-        $table->size = array_merge($table->size, array('1px', '*'));
+        $table->align = array_merge($table->align, ['', 'left']);
+        $table->colclasses = array_merge($table->colclasses, ['datecol', 'desccol']);
+        $table->size = array_merge($table->size, ['1px', '*']);
 
         // Add custom fields.
         $customfields = [];
@@ -1314,9 +1314,9 @@ private function construct_user_sessions_log(user_data $userdata) {
         $table->head[] = get_string('points', 'attendance');
         $table->head[] = get_string('remarks', 'attendance');
 
-        $table->align = array_merge($table->align, array('center', 'center', 'center'));
-        $table->colclasses = array_merge($table->colclasses, array('statuscol', 'pointscol', 'remarkscol'));
-        $table->size = array_merge($table->size, array('*', '1px', '*'));
+        $table->align = array_merge($table->align, ['center', 'center', 'center']);
+        $table->colclasses = array_merge($table->colclasses, ['statuscol', 'pointscol', 'remarkscol']);
+        $table->size = array_merge($table->size, ['*', '1px', '*']);
 
         if (has_capability('mod/attendance:takeattendances', $context)) {
             $table->head[] = get_string('action');
@@ -1357,7 +1357,7 @@ private function construct_user_sessions_log(user_data $userdata) {
                 list($canmark, $reason) = attendance_can_student_mark($sess, false);
                 if (attendance_check_allow_update($sess->id) && $canmark) {
                     $url = new moodle_url('/mod/attendance/attendance.php',
-                                array('sessid' => $sess->id, 'sesskey' => sesskey()));
+                                ['sessid' => $sess->id, 'sesskey' => sesskey()]);
                     $updatelink = "<br>".html_writer::link($url, get_string('updateattendance', 'attendance'));
                 }
                 $row->cells[] = $status->description.$updatelink;
@@ -1380,7 +1380,7 @@ private function construct_user_sessions_log(user_data $userdata) {
                     // Student can mark their own attendance.
                     // URL to the page that lets the student modify their attendance.
                     $url = new moodle_url('/mod/attendance/attendance.php',
-                            array('sessid' => $sess->id, 'sesskey' => sesskey()));
+                            ['sessid' => $sess->id, 'sesskey' => sesskey()]);
                     if (attendance_session_open_for_students($sess)) {
                         if ($sess->rotateqrcode == 1) {
                             $url = new moodle_url('/mod/attendance/attendance.php');
@@ -1409,9 +1409,9 @@ private function construct_user_sessions_log(user_data $userdata) {
             }
 
             if (has_capability('mod/attendance:takeattendances', $context)) {
-                $params = array('id' => $userdata->filtercontrols->cm->id,
+                $params = ['id' => $userdata->filtercontrols->cm->id,
                     'sessionid' => $sess->id,
-                    'grouptype' => $sess->groupid);
+                    'grouptype' => $sess->groupid, ];
                 $url = new moodle_url('/mod/attendance/take.php', $params);
                 $icon = $this->output->pix_icon('redo', get_string('changeattendance', 'attendance'), 'attendance');
                 $row->cells[] = html_writer::link($url, $icon);
@@ -1444,10 +1444,10 @@ private function construct_user_allsessions_log(user_data $userdata) {
 
         $table = new html_table();
         $table->attributes['class'] = 'generaltable attwidth boxaligncenter allsessions';
-        $table->head = array();
-        $table->align = array();
-        $table->size = array();
-        $table->colclasses = array();
+        $table->head = [];
+        $table->align = [];
+        $table->size = [];
+        $table->colclasses = [];
         $colcount = 0;
         $summarywidth = 0;
 
@@ -1553,26 +1553,26 @@ private function construct_user_allsessions_log(user_data $userdata) {
             $summarywidth++;
         }
 
-        $statusmaxpoints = array();
+        $statusmaxpoints = [];
         foreach ($userdata->statuses as $attid => $attstatuses) {
             $statusmaxpoints[$attid] = attendance_get_statusset_maxpoints($attstatuses);
         }
 
-        $lastgroup = array(null, null);
-        $groups = array();
-        $stats = array(
-            'course' => array(),
-            'activity' => array(),
-            'date' => array(),
-            'overall' => array(
+        $lastgroup = [null, null];
+        $groups = [];
+        $stats = [
+            'course' => [],
+            'activity' => [],
+            'date' => [],
+            'overall' => [
                 'points' => 0,
                 'maxpointstodate' => 0,
                 'maxpoints' => 0,
                 'pcpointstodate' => null,
                 'pcpoints' => null,
-                'statuses' => array()
-            )
-        );
+                'statuses' => [],
+            ],
+        ];
         $group = null;
         if ($userdata->sessionslog) {
             foreach ($userdata->sessionslog as $sess) {
@@ -1582,18 +1582,18 @@ private function construct_user_allsessions_log(user_data $userdata) {
                         if ($group !== null) {
                             array_push($groups, $group);
                         }
-                        $group = array();
+                        $group = [];
                         $lastgroup[0] = $weekformat;
                     }
                     if (!array_key_exists($weekformat, $stats['date'])) {
-                        $stats['date'][$weekformat] = array(
+                        $stats['date'][$weekformat] = [
                             'points' => 0,
                             'maxpointstodate' => 0,
                             'maxpoints' => 0,
                             'pcpointstodate' => null,
                             'pcpoints' => null,
-                            'statuses' => array()
-                        );
+                            'statuses' => [],
+                        ];
                     }
                     $statussetmaxpoints = $statusmaxpoints[$sess->attendanceid];
                     // Ensure all possible acronyms for current sess's statusset are available as
@@ -1605,11 +1605,11 @@ private function construct_user_allsessions_log(user_data $userdata) {
                         if ($attstatus->setnumber === $sess->statusset) {
                             if (!array_key_exists($attstatus->acronym, $stats['date'][$weekformat]['statuses'])) {
                                 $stats['date'][$weekformat]['statuses'][$attstatus->acronym] =
-                                    array('count' => 0, 'description' => $attstatus->description);
+                                    ['count' => 0, 'description' => $attstatus->description];
                             }
                             if (!array_key_exists($attstatus->acronym, $stats['overall']['statuses'])) {
                                 $stats['overall']['statuses'][$attstatus->acronym] =
-                                    array('count' => 0, 'description' => $attstatus->description);
+                                    ['count' => 0, 'description' => $attstatus->description];
                             }
                         }
                     }
@@ -1634,19 +1634,19 @@ private function construct_user_allsessions_log(user_data $userdata) {
                         if ($group !== null) {
                             array_push($groups, $group);
                         }
-                        $group = array();
+                        $group = [];
                         $lastgroup[0] = $sess->courseid;
                         $lastgroup[1] = $sess->cmid;
                     }
                     if (!array_key_exists($sess->courseid, $stats['course'])) {
-                        $stats['course'][$sess->courseid] = array(
+                        $stats['course'][$sess->courseid] = [
                             'points' => 0,
                             'maxpointstodate' => 0,
                             'maxpoints' => 0,
                             'pcpointstodate' => null,
                             'pcpoints' => null,
-                            'statuses' => array()
-                        );
+                            'statuses' => [],
+                        ];
                     }
                     $statussetmaxpoints = $statusmaxpoints[$sess->attendanceid];
                     // Ensure all possible acronyms for current sess's statusset are available as
@@ -1658,11 +1658,11 @@ private function construct_user_allsessions_log(user_data $userdata) {
                         if ($attstatus->setnumber === $sess->statusset) {
                             if (!array_key_exists($attstatus->acronym, $stats['course'][$sess->courseid]['statuses'])) {
                                 $stats['course'][$sess->courseid]['statuses'][$attstatus->acronym] =
-                                    array('count' => 0, 'description' => $attstatus->description);
+                                    ['count' => 0, 'description' => $attstatus->description];
                             }
                             if (!array_key_exists($attstatus->acronym, $stats['overall']['statuses'])) {
                                 $stats['overall']['statuses'][$attstatus->acronym] =
-                                    array('count' => 0, 'description' => $attstatus->description);
+                                    ['count' => 0, 'description' => $attstatus->description];
                             }
                         }
                     }
@@ -1680,14 +1680,14 @@ private function construct_user_allsessions_log(user_data $userdata) {
                     $stats['overall']['maxpoints'] += $statussetmaxpoints[$sess->statusset];
 
                     if (!array_key_exists($sess->cmid, $stats['activity'])) {
-                        $stats['activity'][$sess->cmid] = array(
+                        $stats['activity'][$sess->cmid] = [
                             'points' => 0,
                             'maxpointstodate' => 0,
                             'maxpoints' => 0,
                             'pcpointstodate' => null,
                             'pcpoints' => null,
-                            'statuses' => array()
-                        );
+                            'statuses' => [],
+                        ];
                     }
                     $statussetmaxpoints = $statusmaxpoints[$sess->attendanceid];
                     // Ensure all possible acronyms for current sess's statusset are available as
@@ -1699,11 +1699,11 @@ private function construct_user_allsessions_log(user_data $userdata) {
                         if ($attstatus->setnumber === $sess->statusset) {
                             if (!array_key_exists($attstatus->acronym, $stats['activity'][$sess->cmid]['statuses'])) {
                                 $stats['activity'][$sess->cmid]['statuses'][$attstatus->acronym] =
-                                    array('count' => 0, 'description' => $attstatus->description);
+                                    ['count' => 0, 'description' => $attstatus->description];
                             }
                             if (!array_key_exists($attstatus->acronym, $stats['overall']['statuses'])) {
                                 $stats['overall']['statuses'][$attstatus->acronym] =
-                                    array('count' => 0, 'description' => $attstatus->description);
+                                    ['count' => 0, 'description' => $attstatus->description];
                             }
                         }
                     }
@@ -1754,7 +1754,7 @@ private function construct_user_allsessions_log(user_data $userdata) {
         $summarytable->data[] = $row;
         $allsessions->summary = html_writer::table($summarytable);
 
-        $lastgroup = array(null, null);
+        $lastgroup = [null, null];
         foreach ($groups as $group) {
 
             $statussetmaxpoints = $statusmaxpoints[$sess->attendanceid];
@@ -1795,7 +1795,7 @@ private function construct_user_allsessions_log(user_data $userdata) {
                 $table->data[] = $row;
                 $row = new html_table_row();
                 $row->attributes['class'] = 'grouper';
-                $summary = array();
+                $summary = [];
                 foreach ($stats['date'][$weekformat]['statuses'] as $acronym => $status) {
                     array_push($summary, html_writer::tag('b', $acronym) . $status['count']);
                 }
@@ -1818,7 +1818,7 @@ private function construct_user_allsessions_log(user_data $userdata) {
                         $cell->rowspan = 2;
                     }
                     $row->cells[] = $cell;
-                    $courseurl = new moodle_url('/course/view.php', array('id' => $sess->courseid));
+                    $courseurl = new moodle_url('/course/view.php', ['id' => $sess->courseid]);
                     $cell = new html_table_cell(get_string('course', 'attendance') . ": " .
                         html_writer::link($courseurl, $sess->cname));
                     $cell->colspan = $colcount - $summarywidth;
@@ -1841,7 +1841,7 @@ private function construct_user_allsessions_log(user_data $userdata) {
                     $table->data[] = $row;
                     $row = new html_table_row();
                     $row->attributes['class'] = 'grouper';
-                    $summary = array();
+                    $summary = [];
                     foreach ($stats['course'][$sess->courseid]['statuses'] as $acronym => $status) {
                         array_push($summary, html_writer::tag('b', $acronym) . $status['count']);
                     }
@@ -1859,9 +1859,9 @@ private function construct_user_allsessions_log(user_data $userdata) {
                     $cell = new html_table_cell();
                     $cell->rowspan = count($group) + 2;
                     $row->cells[] = $cell;
-                    $attendanceurl = new moodle_url('/mod/attendance/view.php', array('id' => $sess->cmid,
+                    $attendanceurl = new moodle_url('/mod/attendance/view.php', ['id' => $sess->cmid,
                                                                                       'studentid' => $userdata->user->id,
-                                                                                      'view' => ATT_VIEW_ALL));
+                                                                                      'view' => ATT_VIEW_ALL]);
                     $cell = new html_table_cell(get_string('pluginname', 'mod_attendance') .
                         ": " . html_writer::link($attendanceurl, $sess->attname));
                     $cell->colspan = $colcount - $summarywidth;
@@ -1884,7 +1884,7 @@ private function construct_user_allsessions_log(user_data $userdata) {
                     $table->data[] = $row;
                     $row = new html_table_row();
                     $row->attributes['class'] = 'grouper';
-                    $summary = array();
+                    $summary = [];
                     foreach ($stats['activity'][$sess->cmid]['statuses'] as $acronym => $status) {
                         array_push($summary, html_writer::tag('b', $acronym) . $status['count']);
                     }
@@ -1910,15 +1910,15 @@ private function construct_user_allsessions_log(user_data $userdata) {
                     $row->cells[] = userdate($sess->sessdate, get_string('strftimedmw', 'attendance')) .
                         " ". $this->construct_time($sess->sessdate, $sess->duration);
 
-                    $courseurl = new moodle_url('/course/view.php', array('id' => $sess->courseid));
+                    $courseurl = new moodle_url('/course/view.php', ['id' => $sess->courseid]);
                     $row->cells[] = html_writer::link($courseurl, $sess->cname);
                 }
 
                 // Need activity column unless we are using activity to group.
                 if ($groupby !== 'activity') {
-                    $attendanceurl = new moodle_url('/mod/attendance/view.php', array('id' => $sess->cmid,
+                    $attendanceurl = new moodle_url('/mod/attendance/view.php', ['id' => $sess->cmid,
                                                                                       'studentid' => $userdata->user->id,
-                                                                                      'view' => ATT_VIEW_ALL));
+                                                                                      'view' => ATT_VIEW_ALL]);
                     $row->cells[] = html_writer::link($attendanceurl, $sess->attname);
                 }
 
@@ -1930,9 +1930,9 @@ private function construct_user_allsessions_log(user_data $userdata) {
 
                 $sesscontext = context_module::instance($sess->cmid);
                 if (has_capability('mod/attendance:takeattendances', $sesscontext)) {
-                    $sessionurl = new moodle_url('/mod/attendance/take.php', array('id' => $sess->cmid,
+                    $sessionurl = new moodle_url('/mod/attendance/take.php', ['id' => $sess->cmid,
                                                                                    'sessionid' => $sess->id,
-                                                                                   'grouptype' => $sess->groupid));
+                                                                                   'grouptype' => $sess->groupid]);
                     $description = html_writer::link($sessionurl, $sess->description);
                 } else {
                     $description = $sess->description;
@@ -1974,7 +1974,7 @@ private function construct_user_allsessions_log(user_data $userdata) {
                             return ($x->setnumber == $sess->statusset);
                         });
                         $takedata->updatemode = true;
-                        $takedata->sessionlog = array($userdata->user->id => $sess);
+                        $takedata->sessionlog = [$userdata->user->id => $sess];
                         $takedata->pageparams = new stdClass();
                         $takedata->pageparams->viewmode = mod_attendance_take_page_params::SORTED_GRID;
                         $ucdata = $this->construct_take_session_controls($takedata, $userdata->user);
@@ -2028,7 +2028,7 @@ private function construct_user_allsessions_log(user_data $userdata) {
                             // URL to the page that lets the student modify their attendance.
 
                             $url = new moodle_url('/mod/attendance/attendance.php',
-                            array('sessid' => $sess->id, 'sesskey' => sesskey()));
+                            ['sessid' => $sess->id, 'sesskey' => sesskey()]);
                             if (attendance_session_open_for_students($sess)) {
                                 $cell = new html_table_cell(html_writer::link($url, get_string('submitattendance', 'attendance')));
                             } else {
@@ -2050,10 +2050,10 @@ private function construct_user_allsessions_log(user_data $userdata) {
 
         if (!empty($USER->attendanceediting)) {
             $row = new html_table_row();
-            $params = array(
+            $params = [
                 'type'  => 'submit',
                 'class' => 'btn btn-primary',
-                'value' => get_string('save', 'attendance'));
+                'value' => get_string('save', 'attendance'), ];
             $cell = new html_table_cell(html_writer::tag('center', html_writer::empty_tag('input', $params)));
             $cell->colspan = $colcount + (($groupby == 'activity') ? 2 : 1);
             $row->cells[] = $cell;
@@ -2065,12 +2065,12 @@ private function construct_user_allsessions_log(user_data $userdata) {
         if (!empty($USER->attendanceediting)) {
             $formtext = html_writer::start_div('no-overflow');
             $formtext .= $logtext;
-            $formtext .= html_writer::input_hidden_params($userdata->url(array('sesskey' => sesskey())));
+            $formtext .= html_writer::input_hidden_params($userdata->url(['sesskey' => sesskey()]));
             $formtext .= html_writer::end_div();
             // Could use userdata->urlpath if not private or userdata->url_path() if existed, but '' turns
             // out to DTRT.
-            $logtext = html_writer::tag('form', $formtext, array('method' => 'post', 'action' => '',
-                                                                 'id' => 'attendancetakeform'));
+            $logtext = html_writer::tag('form', $formtext, ['method' => 'post', 'action' => '',
+                                                                 'id' => 'attendancetakeform']);
         }
         $allsessions->detail = $logtext;
         return $allsessions;
@@ -2107,7 +2107,7 @@ protected function render_report_data(report_data $reportdata) {
         $userrows = $this->get_user_rows($reportdata);
 
         if ($reportdata->pageparams->view == ATT_VIEW_SUMMARY) {
-            $sessionrows = array();
+            $sessionrows = [];
         } else {
             $sessionrows = $this->get_session_rows($reportdata);
         }
@@ -2131,8 +2131,8 @@ protected function render_report_data(report_data $reportdata) {
         // Extract rows from each part and collate them into one row each.
         $sessiondetailsleft = $reportdata->pageparams->sessiondetailspos == 'left';
         foreach ($userrows as $index => $row) {
-            $summaryrow = isset($summaryrows[$index]->cells) ? $summaryrows[$index]->cells : array();
-            $sessionrow = isset($sessionrows[$index]->cells) ? $sessionrows[$index]->cells : array();
+            $summaryrow = isset($summaryrows[$index]->cells) ? $summaryrows[$index]->cells : [];
+            $sessionrow = isset($sessionrows[$index]->cells) ? $sessionrows[$index]->cells : [];
             if ($sessiondetailsleft) {
                 $row->cells = array_merge($row->cells, $sessionrow, $acronymrows[$index]->cells, $summaryrow);
             } else {
@@ -2143,19 +2143,19 @@ protected function render_report_data(report_data $reportdata) {
 
         if ($bulkmessagecapability) { // Require that the user can bulk message users.
             // Display check boxes that will allow the user to send a message to the students that have been checked.
-            $output = html_writer::empty_tag('input', array('name' => 'sesskey', 'type' => 'hidden', 'value' => sesskey()));
-            $output .= html_writer::empty_tag('input', array('name' => 'id', 'type' => 'hidden', 'value' => $COURSE->id));
-            $output .= html_writer::empty_tag('input', array('name' => 'returnto', 'type' => 'hidden', 'value' => s(me())));
+            $output = html_writer::empty_tag('input', ['name' => 'sesskey', 'type' => 'hidden', 'value' => sesskey()]);
+            $output .= html_writer::empty_tag('input', ['name' => 'id', 'type' => 'hidden', 'value' => $COURSE->id]);
+            $output .= html_writer::empty_tag('input', ['name' => 'returnto', 'type' => 'hidden', 'value' => s(me())]);
             $output .= html_writer::start_div('attendancereporttable');
             $output .= html_writer::table($table).html_writer::tag('div', get_string('users').': '.count($reportdata->users));
             $output .= html_writer::end_div();
             $output .= html_writer::tag('div',
-                    html_writer::empty_tag('input', array('type' => 'submit',
+                    html_writer::empty_tag('input', ['type' => 'submit',
                                                                    'value' => get_string('messageselectadd'),
-                                                                   'class' => 'btn btn-secondary')),
-                    array('class' => 'buttons'));
+                                                                   'class' => 'btn btn-secondary', ]),
+                    ['class' => 'buttons']);
             $url = new moodle_url('/mod/attendance/messageselect.php');
-            return html_writer::tag('form', $output, array('action' => $url->out(), 'method' => 'post'));
+            return html_writer::tag('form', $output, ['action' => $url->out(), 'method' => 'post']);
         } else {
             return html_writer::table($table).html_writer::tag('div', get_string('users').': '.count($reportdata->users));
         }
@@ -2169,7 +2169,7 @@ protected function render_report_data(report_data $reportdata) {
      * @return array Array of html_table_row objects
      */
     protected function get_user_rows(report_data $reportdata) {
-        $rows = array();
+        $rows = [];
 
         $bulkmessagecapability = has_capability('moodle/course:bulkmessaging', $this->page->context);
         $extrafields = \core_user\fields::for_identity($reportdata->att->context, true)->get_required_fields();
@@ -2187,7 +2187,7 @@ protected function get_user_rows(report_data $reportdata) {
                 $url = $reportdata->att->url_report($params);
                 $text .= $this->output->action_icon($url, new pix_icon('t/switch_plus',
                             get_string('showextrauserdetails', 'attendance')), null, null);
-                $extrafields = array();
+                $extrafields = [];
             }
         }
         $usercolspan = count($extrafields);
@@ -2204,7 +2204,7 @@ protected function get_user_rows(report_data $reportdata) {
         $row = new html_table_row();
         $text = '';
         if ($bulkmessagecapability) {
-            $text .= html_writer::checkbox('cb_selector', 0, false, '', array('id' => 'cb_selector'));
+            $text .= html_writer::checkbox('cb_selector', 0, false, '', ['id' => 'cb_selector']);
         }
         $text .= $this->construct_fullname_head($reportdata);
         $cell = $this->build_header_cell($text, false, false);
@@ -2221,9 +2221,9 @@ protected function get_user_rows(report_data $reportdata) {
             $row = new html_table_row();
             $text = '';
             if ($bulkmessagecapability) {
-                $text .= html_writer::checkbox('user'.$user->id, 'on', false, '', array('class' => 'attendancesesscheckbox'));
+                $text .= html_writer::checkbox('user'.$user->id, 'on', false, '', ['class' => 'attendancesesscheckbox']);
             }
-            $text .= html_writer::link($reportdata->url_view(array('studentid' => $user->id)), fullname($user));
+            $text .= html_writer::link($reportdata->url_view(['studentid' => $user->id]), fullname($user));
             $cell = $this->build_data_cell($text, false, false, null, null, false);
             $cell->attributes['class'] = $cell->attributes['class'] . ' headcol';
             $row->cells[] = $cell;
@@ -2256,9 +2256,9 @@ protected function get_user_rows(report_data $reportdata) {
      * @return array Array of html_table_row objects
      */
     protected function get_acronym_rows(report_data $reportdata, $startwithcontrast=false) {
-        $rows = array();
+        $rows = [];
 
-        $summarycells = array();
+        $summarycells = [];
 
         $row1 = new html_table_row();
         $row2 = new html_table_row();
@@ -2317,10 +2317,10 @@ protected function get_acronym_rows(report_data $reportdata, $startwithcontrast=
      * @return array Array of html_table_row objects
      */
     protected function get_summary_rows(report_data $reportdata, $startwithcontrast=false) {
-        $rows = array();
+        $rows = [];
 
         $contrast = $startwithcontrast;
-        $summarycells = array();
+        $summarycells = [];
 
         $row1 = new html_table_row();
         $helpicon = $this->output->help_icon('oversessionstaken', 'attendance');
@@ -2404,7 +2404,7 @@ protected function get_summary_rows(report_data $reportdata, $startwithcontrast=
      */
     protected function get_session_rows(report_data $reportdata, $startwithcontrast=false) {
 
-        $rows = array();
+        $rows = [];
 
         $row = new html_table_row();
 
@@ -2451,32 +2451,32 @@ protected function get_session_rows(report_data $reportdata, $startwithcontrast=
                 $sesstext = userdate($sess->sessdate, get_string('strftimedm', 'attendance'));
                 $sesstext .= html_writer::empty_tag('br');
                 $sesstext .= attendance_strftimehm($sess->sessdate);
-                $capabilities = array(
+                $capabilities = [
                     'mod/attendance:takeattendances',
-                    'mod/attendance:changeattendances'
-                );
+                    'mod/attendance:changeattendances',
+                ];
                 if (is_null($sess->lasttaken) && has_any_capability($capabilities, $reportdata->att->context)) {
                     $sesstext = html_writer::link($reportdata->url_take($sess->id, $sess->groupid), $sesstext,
-                        array('class' => 'attendancereporttakelink'));
+                        ['class' => 'attendancereporttakelink']);
                 }
-                $sesstext .= html_writer::empty_tag('br', array('class' => 'attendancereportseparator'));
+                $sesstext .= html_writer::empty_tag('br', ['class' => 'attendancereportseparator']);
                 if (!empty($sess->description) &&
                     !empty(get_config('attendance', 'showsessiondescriptiononreport'))) {
                     $sesstext .= html_writer::tag('small', format_text($sess->description),
-                        array('class' => 'attendancereportcommon'));
+                        ['class' => 'attendancereportcommon']);
                 }
                 if ($sess->groupid) {
                     if (empty($reportdata->groups[$sess->groupid])) {
                         $sesstext .= html_writer::tag('small', get_string('deletedgroup', 'attendance'),
-                            array('class' => 'attendancereportgroup'));
+                            ['class' => 'attendancereportgroup']);
                     } else {
                         $sesstext .= html_writer::tag('small', $reportdata->groups[$sess->groupid]->name,
-                            array('class' => 'attendancereportgroup'));
+                            ['class' => 'attendancereportgroup']);
                     }
 
                 } else {
                     $sesstext .= html_writer::tag('small', get_string('commonsession', 'attendance'),
-                        array('class' => 'attendancereportcommon'));
+                        ['class' => 'attendancereportcommon']);
                 }
 
                 $row->cells[] = $this->build_header_cell($sesstext, false, true, null, null, false);
@@ -2507,7 +2507,7 @@ protected function get_session_rows(report_data $reportdata, $startwithcontrast=
         $row = new html_table_row();
         if ($showsessiondetails && !empty($reportdata->sessions)) {
             foreach ($reportdata->sessions as $sess) {
-                $sessionstats = array();
+                $sessionstats = [];
                 foreach ($reportdata->statuses as $status) {
                     if ($status->setnumber == $sess->statusset) {
                         $status->count = 0;
@@ -2550,7 +2550,7 @@ protected function get_session_rows(report_data $reportdata, $startwithcontrast=
      * @return html_table_cell a html table cell
      */
     protected function build_header_cell($cell, $contrast=false, $center=true, $colspan=null, $rowspan=null, $nowrap=true) {
-        $classes = array('header', 'bottom');
+        $classes = ['header', 'bottom'];
         if ($center) {
             $classes[] = 'center';
             $classes[] = 'narrow';
@@ -2578,7 +2578,7 @@ protected function build_header_cell($cell, $contrast=false, $center=true, $cols
      * @return html_table_cell a html table cell
      */
     protected function build_data_cell($cell, $contrast=false, $center=true, $colspan=null, $rowspan=null, $nowrap=true) {
-        $classes = array();
+        $classes = [];
         if ($center) {
             $classes[] = 'center';
             $classes[] = 'narrow';
@@ -2640,7 +2640,7 @@ protected function build_cell($cell, $classes, $colspan=null, $rowspan=null, $he
     protected function render_set_selector(set_selector $sel) {
         $current = $sel->get_current_statusset();
         $selected = null;
-        $opts = array();
+        $opts = [];
         for ($i = 0; $i <= $sel->maxstatusset; $i++) {
             $url = $sel->url($i);
             $display = $sel->get_status_name($i);
@@ -2669,11 +2669,11 @@ protected function render_preferences_data($prefdata) {
 
         $table = new html_table();
         $table->width = '100%';
-        $table->head = array('#',
+        $table->head = ['#',
                              get_string('acronym', 'attendance'),
                              get_string('description'),
-                             get_string('points', 'attendance'));
-        $table->align = array('center', 'center', 'center', 'center', 'center', 'center');
+                             get_string('points', 'attendance'), ];
+        $table->align = ['center', 'center', 'center', 'center', 'center', 'center'];
 
         $table->head[] = get_string('availability', 'attendance').
             $this->output->help_icon('availability', 'attendance');
@@ -2701,7 +2701,7 @@ protected function render_preferences_data($prefdata) {
                     $emptydescription = $this->construct_notice(get_string('emptydescription', 'mod_attendance') , 'notifyproblem');
                 }
             }
-            $cells = array();
+            $cells = [];
             $cells[] = $i;
             $cells[] = $this->construct_text_input('acronym['.$st->id.']', 2, 2, $st->acronym) . $emptyacronym;
             $cells[] = $this->construct_text_input('description['.$st->id.']', 30, 30, $st->description) .
@@ -2738,14 +2738,14 @@ protected function render_preferences_data($prefdata) {
         $table->data[$i]->id = "statuslastrow";
 
         $o = html_writer::table($table);
-        $o .= html_writer::input_hidden_params($prefdata->url(array(), false));
+        $o .= html_writer::input_hidden_params($prefdata->url([], false));
         // We should probably rewrite this to use mforms but for now add sesskey.
-        $o .= html_writer::empty_tag('input', array('type' => 'hidden', 'name' => 'sesskey', 'value' => sesskey()))."\n";
+        $o .= html_writer::empty_tag('input', ['type' => 'hidden', 'name' => 'sesskey', 'value' => sesskey()])."\n";
 
         $o .= $this->construct_preferences_button(get_string('update', 'attendance'),
                                                   mod_attendance_preferences_page_params::ACTION_SAVE);
-        $o = html_writer::tag('form', $o, array('id' => 'preferencesform', 'method' => 'post',
-                                                'action' => $prefdata->url(array(), false)->out_omit_querystring()));
+        $o = html_writer::tag('form', $o, ['id' => 'preferencesform', 'method' => 'post',
+                                                'action' => $prefdata->url([], false)->out_omit_querystring()]);
         $o = $this->output->container($o, 'generalbox attwidth');
 
         return $o;
@@ -2782,13 +2782,13 @@ protected function render_attendance_pref($prefdata) {
      * @return string
      */
     private function construct_text_input($name, $size, $maxlength, $value='', $classname='') {
-        $attributes = array(
+        $attributes = [
                 'type'      => 'text',
                 'name'      => $name,
                 'size'      => $size,
                 'maxlength' => $maxlength,
                 'value'     => $value,
-                'class' => "form-control {$classname}");
+                'class' => "form-control {$classname}", ];
         return html_writer::empty_tag('input', $attributes);
     }
 
@@ -2800,8 +2800,8 @@ private function construct_text_input($name, $size, $maxlength, $value='', $clas
      * @return string
      */
     private function construct_preferences_actions_icons($st, $prefdata) {
-        $params = array('sesskey' => sesskey(),
-                        'statusid' => $st->id);
+        $params = ['sesskey' => sesskey(),
+                        'statusid' => $st->id, ];
         if ($st->visible) {
             $params['action'] = mod_attendance_preferences_page_params::ACTION_HIDE;
             $showhideicon = $this->output->action_icon(
@@ -2833,11 +2833,11 @@ private function construct_preferences_actions_icons($st, $prefdata) {
      * @return string
      */
     private function construct_preferences_button($text, $action) {
-        $attributes = array(
+        $attributes = [
                 'type'      => 'submit',
                 'value'     => $text,
                 'class'     => 'btn btn-secondary',
-                'onclick'   => 'M.mod_attendance.set_preferences_action('.$action.')');
+                'onclick'   => 'M.mod_attendance.set_preferences_action('.$action.')', ];
         return html_writer::empty_tag('input', $attributes);
     }
 
@@ -2849,7 +2849,7 @@ private function construct_preferences_button($text, $action) {
      * @return string
      */
     private function construct_notice($text, $class = 'notifymessage') {
-        $attributes = array('class' => $class);
+        $attributes = ['class' => $class];
         return html_writer::tag('p', $text, $attributes);
     }
 
@@ -2870,10 +2870,10 @@ protected function construct_studentavailability($st) {
             }
         }
 
-        $options = array(0 => get_string('availabilityno', 'mod_attendance'),
-                         1 => get_string('availabilitylimitedtime', 'mod_attendance'));
+        $options = [0 => get_string('availabilityno', 'mod_attendance'),
+                         1 => get_string('availabilitylimitedtime', 'mod_attendance'), ];
         $result = html_writer::select($options, 'availability['.$st->id.']', $default,
-        array('' => get_string('availabilityalways', 'mod_attendance')));
+        ['' => get_string('availabilityalways', 'mod_attendance')]);
         $result .= $this->construct_text_input('studentavailability['.$st->id.']', 4, 5, $st->studentavailability,
                                                 'studentavailability');
         return $result;
@@ -2888,11 +2888,11 @@ protected function construct_studentavailability($st) {
      */
     protected function user_picture($user, array $opts = null) {
         if ($user->type == 'temporary') {
-            $attrib = array(
+            $attrib = [
                 'width' => '35',
                 'height' => '35',
                 'class' => 'userpicture defaultuserpic',
-            );
+            ];
             if (isset($opts['size'])) {
                 $attrib['width'] = $attrib['height'] = $opts['size'];
             }
diff --git a/classes/output/report_data.php b/classes/output/report_data.php
index 20a9915486a..bd5b6221ed1 100644
--- a/classes/output/report_data.php
+++ b/classes/output/report_data.php
@@ -49,11 +49,11 @@ class report_data implements renderable {
     /** @var array includes disablrd/deleted statuses. */
     public $allstatuses;
     /** @var array  */
-    public $usersgroups = array();
+    public $usersgroups = [];
     /** @var array  */
-    public $sessionslog = array();
+    public $sessionslog = [];
     /** @var array|mod_attendance_summary  */
-    public $summary = array();
+    public $summary = [];
     /** @var mod_attendance_structure  */
     public $att;
 
@@ -120,7 +120,7 @@ public function url_take($sessionid, $grouptype) {
      * @param array $params
      * @return mixed
      */
-    public function url_view($params=array()) {
+    public function url_view($params=[]) {
         return url_helpers::url_view($this->att, $params);
     }
 
@@ -129,7 +129,7 @@ public function url_view($params=array()) {
      * @param array $params
      * @return moodle_url
      */
-    public function url($params=array()) {
+    public function url($params=[]) {
         $params = array_merge($params, $this->pageparams->get_significant_params());
 
         return $this->att->url_report($params);
diff --git a/classes/output/set_selector.php b/classes/output/set_selector.php
index 3f013560f09..b2d364bf256 100644
--- a/classes/output/set_selector.php
+++ b/classes/output/set_selector.php
@@ -55,7 +55,7 @@ public function __construct(mod_attendance_structure $att, $maxstatusset) {
      * @return moodle_url
      */
     public function url($statusset) {
-        $params = array();
+        $params = [];
         $params['statusset'] = $statusset;
 
         return $this->att->url_preferences($params);
diff --git a/classes/output/take_data.php b/classes/output/take_data.php
index cfba03216b4..4ec051dd585 100644
--- a/classes/output/take_data.php
+++ b/classes/output/take_data.php
@@ -87,7 +87,7 @@ public function  __construct(mod_attendance_structure $att) {
         } else if ($this->updatemode) {
             $this->sessionlog = $att->get_session_log($att->pageparams->sessionid);
         } else {
-            $this->sessionlog = array();
+            $this->sessionlog = [];
         }
 
         if (!$this->updatemode) {
@@ -108,7 +108,7 @@ public function  __construct(mod_attendance_structure $att) {
      * @param array $excludeparams
      * @return moodle_url
      */
-    public function url($params=array(), $excludeparams=array()) {
+    public function url($params=[], $excludeparams=[]) {
         $params = array_merge($this->urlparams, $params);
 
         foreach ($excludeparams as $paramkey) {
@@ -123,7 +123,7 @@ public function url($params=array(), $excludeparams=array()) {
      * @param array $params
      * @return mixed
      */
-    public function url_view($params=array()) {
+    public function url_view($params=[]) {
         return url_helpers::url_view($this->att, $params);
     }
 
diff --git a/classes/output/user_data.php b/classes/output/user_data.php
index e9d8a620885..634c81f2ae6 100644
--- a/classes/output/user_data.php
+++ b/classes/output/user_data.php
@@ -76,7 +76,7 @@ public function  __construct(mod_attendance_structure $att, $userid, $mobile = f
             $this->statuses = $att->get_statuses(true, true);
 
             if (!$mobile) {
-                $this->summary = new mod_attendance_summary($att->id, array($userid), $att->pageparams->startdate,
+                $this->summary = new mod_attendance_summary($att->id, [$userid], $att->pageparams->startdate,
                     $att->pageparams->enddate);
 
                 $this->filtercontrols = new filter_controls($att);
@@ -87,9 +87,9 @@ public function  __construct(mod_attendance_structure $att, $userid, $mobile = f
             $this->groups = groups_get_all_groups($att->course->id);
         } else if ($this->pageparams->mode == mod_attendance_view_page_params::MODE_ALL_SESSIONS) {
             $this->coursesatts = attendance_get_user_courses_attendances($userid);
-            $this->statuses = array();
-            $this->summaries = array();
-            $this->groups = array();
+            $this->statuses = [];
+            $this->summaries = [];
+            $this->groups = [];
 
             foreach ($this->coursesatts as $atid => $ca) {
                 // Check to make sure the user can view this cm.
@@ -101,7 +101,7 @@ public function  __construct(mod_attendance_structure $att, $userid, $mobile = f
                     $this->coursesatts[$atid]->cmid = $modinfo->instances['attendance'][$ca->attid]->get_course_module_record()->id;
                 }
                 $this->statuses[$ca->attid] = attendance_get_statuses($ca->attid);
-                $this->summaries[$ca->attid] = new mod_attendance_summary($ca->attid, array($userid));
+                $this->summaries[$ca->attid] = new mod_attendance_summary($ca->attid, [$userid]);
 
                 if (!array_key_exists($ca->courseid, $this->groups)) {
                     $this->groups[$ca->courseid] = groups_get_all_groups($ca->courseid);
@@ -109,7 +109,7 @@ public function  __construct(mod_attendance_structure $att, $userid, $mobile = f
             }
 
             if (!$mobile) {
-                $this->summary = new mod_attendance_summary($att->id, array($userid), $att->pageparams->startdate,
+                $this->summary = new mod_attendance_summary($att->id, [$userid], $att->pageparams->startdate,
                     $att->pageparams->enddate);
 
                 $this->filtercontrols = new filter_controls($att);
@@ -128,8 +128,8 @@ public function  __construct(mod_attendance_structure $att, $userid, $mobile = f
 
         } else {
             $this->coursesatts = attendance_get_user_courses_attendances($userid);
-            $this->statuses = array();
-            $this->summary = array();
+            $this->statuses = [];
+            $this->summary = [];
             foreach ($this->coursesatts as $atid => $ca) {
                 // Check to make sure the user can view this cm.
                 $modinfo = get_fast_modinfo($ca->courseid);
@@ -140,7 +140,7 @@ public function  __construct(mod_attendance_structure $att, $userid, $mobile = f
                     $this->coursesatts[$atid]->cmid = $modinfo->instances['attendance'][$ca->attid]->get_course_module_record()->id;
                 }
                 $this->statuses[$ca->attid] = attendance_get_statuses($ca->attid);
-                $this->summary[$ca->attid] = new mod_attendance_summary($ca->attid, array($userid));
+                $this->summary[$ca->attid] = new mod_attendance_summary($ca->attid, [$userid]);
             }
         }
         $this->urlpath = $att->url_view()->out_omit_querystring();
@@ -155,7 +155,7 @@ public function  __construct(mod_attendance_structure $att, $userid, $mobile = f
      * @param array $excludeparams
      * @return moodle_url
      */
-    public function url($params=array(), $excludeparams=array()) {
+    public function url($params=[], $excludeparams=[]) {
         $params = array_merge($this->urlparams, $params);
 
         foreach ($excludeparams as $paramkey) {
@@ -176,10 +176,10 @@ public function take_sessions_from_form_data($formdata) {
         // This whole function could do with a nice clean up.
 
         $now = time();
-        $sesslog = array();
+        $sesslog = [];
         $formdata = (array)$formdata;
-        $updatedsessions = array();
-        $sessionatt = array();
+        $updatedsessions = [];
+        $sessionatt = [];
 
         foreach ($formdata as $key => $value) {
             // Look at Remarks field because the user options may not be passed if empty.
@@ -221,15 +221,15 @@ function($x) use($dbsession) {
                 $formlog->takenby = $USER->id;
 
                 if (!array_key_exists($stid, $sesslog)) {
-                    $sesslog[$stid] = array();
+                    $sesslog[$stid] = [];
                 }
                 $sesslog[$stid][$sessid] = $formlog;
             }
         }
 
-        $updateatts = array();
+        $updateatts = [];
         foreach ($sesslog as $stid => $userlog) {
-            $dbstudlog = $DB->get_records('attendance_log', array('studentid' => $stid), '',
+            $dbstudlog = $DB->get_records('attendance_log', ['studentid' => $stid], '',
                 'sessionid,statusid,remarks,id,statusset');
             foreach ($userlog as $log) {
                 if (array_key_exists($log->sessionid, $dbstudlog)) {
@@ -245,7 +245,7 @@ function($x) use($dbsession) {
 
                         $updatedsessions[$log->sessionid] = $log->sessionid;
                         if (!array_key_exists($attid, $updateatts)) {
-                            $updateatts[$attid] = array();
+                            $updateatts[$attid] = [];
                         }
                         array_push($updateatts[$attid], $log->studentid);
                     }
@@ -253,7 +253,7 @@ function($x) use($dbsession) {
                     $DB->insert_record('attendance_log', $log, false);
                     $updatedsessions[$log->sessionid] = $log->sessionid;
                     if (!array_key_exists($attid, $updateatts)) {
-                        $updateatts[$attid] = array();
+                        $updateatts[$attid] = [];
                     }
                     array_push($updateatts[$attid], $log->studentid);
                 }
diff --git a/classes/page_with_filter_controls.php b/classes/page_with_filter_controls.php
index e998e572854..f686ba3460b 100644
--- a/classes/page_with_filter_controls.php
+++ b/classes/page_with_filter_controls.php
@@ -174,7 +174,7 @@ private function calc_sessgroupslist_sesstype() {
         global $SESSION;
 
         if (!property_exists($SESSION, 'attsessiontype')) {
-            $SESSION->attsessiontype = array($this->cm->course => self::SESSTYPE_ALL);
+            $SESSION->attsessiontype = [$this->cm->course => self::SESSTYPE_ALL];
         } else if (!array_key_exists($this->cm->course, $SESSION->attsessiontype)) {
             $SESSION->attsessiontype[$this->cm->course] = self::SESSTYPE_ALL;
         }
@@ -224,7 +224,7 @@ private function calc_sessgroupslist_sesstype() {
     private function calc_sessgroupslist() {
         global $USER, $PAGE;
 
-        $this->sessgroupslist = array();
+        $this->sessgroupslist = [];
         $groupmode = groups_get_activity_groupmode($this->cm);
         if ($groupmode == NOGROUPS) {
             return;
diff --git a/classes/preferences_page_params.php b/classes/preferences_page_params.php
index 96554cba959..bda33bf2284 100644
--- a/classes/preferences_page_params.php
+++ b/classes/preferences_page_params.php
@@ -55,7 +55,7 @@ class mod_attendance_preferences_page_params {
      * @return array
      */
     public function get_significant_params() {
-        $params = array();
+        $params = [];
 
         if (isset($this->action)) {
             $params['action'] = $this->action;
diff --git a/classes/privacy/provider.php b/classes/privacy/provider.php
index 0932f455425..67a0c2f61b6 100644
--- a/classes/privacy/provider.php
+++ b/classes/privacy/provider.php
@@ -58,7 +58,7 @@ public static function get_metadata(collection $collection) : collection {
                 'timetaken' => 'privacy:metadata:timetaken',
                 'takenby' => 'privacy:metadata:takenby',
                 'remarks' => 'privacy:metadata:remarks',
-                'ipaddress' => 'privacy:metadata:ipaddress'
+                'ipaddress' => 'privacy:metadata:ipaddress',
             ],
             'privacy:metadata:attendancelog'
         );
@@ -71,7 +71,7 @@ public static function get_metadata(collection $collection) : collection {
                 'duration' => 'privacy:metadata:duration',
                 'lasttaken' => 'privacy:metadata:lasttaken',
                 'lasttakenby' => 'privacy:metadata:lasttakenby',
-                'timemodified' => 'privacy:metadata:timemodified'
+                'timemodified' => 'privacy:metadata:timemodified',
             ],
             'privacy:metadata:attendancesessions'
         );
@@ -81,7 +81,7 @@ public static function get_metadata(collection $collection) : collection {
             [
                 'notifyid' => 'privacy:metadata:notifyid',
                 'userid' => 'privacy:metadata:userid',
-                'timesent' => 'privacy:metadata:timesent'
+                'timesent' => 'privacy:metadata:timesent',
             ],
             'privacy:metadata:attendancewarningdone'
         );
@@ -111,7 +111,7 @@ public static function get_contexts_for_userid(int $userid) : contextlist {
                 'modulename' => 'attendance',
                 'contextlevel' => CONTEXT_MODULE,
                 'userid' => $userid,
-                'takenbyid' => $userid
+                'takenbyid' => $userid,
             ]
         );
     }
@@ -177,7 +177,7 @@ public static function delete_data_for_all_users_in_context(context $context) {
             'attendance_log',
             "sessionid IN (SELECT id FROM {attendance_sessions} WHERE attendanceid = :attendanceid",
             [
-                'attendanceid' => $cm->instance
+                'attendanceid' => $cm->instance,
             ]
         );
 
@@ -248,7 +248,7 @@ public static function delete_data_for_users(approved_userlist $userlist) {
             $sql = 'SELECT DISTINCT w.*
                 FROM {attendance_warning} w
                 JOIN {attendance_warning_done} d ON d.notifyid = w.id AND d.userid = ?';
-            $warnings = $DB->get_records_sql($sql, array($userid));
+            $warnings = $DB->get_records_sql($sql, [$userid]);
             if (!empty($warnings)) {
                 attendance_remove_user_from_thirdpartyemails($warnings, $userid);
             }
@@ -283,7 +283,7 @@ public static function export_user_data(approved_contextlist $contextlist) {
             'modulename' => 'attendance',
             'contextlevel' => CONTEXT_MODULE,
             'studentid' => $contextlist->get_user()->id,
-            'takenby' => $contextlist->get_user()->id
+            'takenby' => $contextlist->get_user()->id,
         ];
 
         list($contextsql, $contextparams) = $DB->get_in_or_equal($contextlist->get_contextids(), SQL_PARAMS_NAMED);
@@ -489,7 +489,7 @@ private static function transform_db_row_to_session_data(stdClass $dbrow) : stdC
             'sessiondescription' => $dbrow->description,
             'timetaken' => transform::datetime($dbrow->timetaken),
             'remarks' => $dbrow->remarks,
-            'ipaddress' => $dbrow->ipaddress
+            'ipaddress' => $dbrow->ipaddress,
         ];
     }
 
@@ -507,7 +507,7 @@ private static function transform_warning_data(stdClass $warning) : stdClass {
             'timesent' => transform::datetime($warning->timesent),
             'thirdpartyemails' => $warning->thirdpartyemails,
             'subject' => $warning->emailsubject,
-            'body' => $warning->emailcontent
+            'body' => $warning->emailcontent,
         ];
     }
 
diff --git a/classes/report_page_params.php b/classes/report_page_params.php
index b6c44b07cd2..efda5acb462 100644
--- a/classes/report_page_params.php
+++ b/classes/report_page_params.php
@@ -70,7 +70,7 @@ public function init($cm) {
      * @return array
      */
     public function get_significant_params() {
-        $params = array();
+        $params = [];
 
         if ($this->sort != ATT_SORT_DEFAULT) {
             $params['sort'] = $this->sort;
diff --git a/classes/reportbuilder/datasource/attendance.php b/classes/reportbuilder/datasource/attendance.php
index 6c9a8723b25..911761450a7 100644
--- a/classes/reportbuilder/datasource/attendance.php
+++ b/classes/reportbuilder/datasource/attendance.php
@@ -93,7 +93,7 @@ public function get_default_columns(): array {
                 'attendance:sessiondate',
                 'attendance:timetaken',
                 'attendance:status',
-                'attendance:grade'];
+                'attendance:grade', ];
     }
 
     /**
diff --git a/classes/structure.php b/classes/structure.php
index c5d63721ab8..6e647898d0b 100644
--- a/classes/structure.php
+++ b/classes/structure.php
@@ -99,7 +99,7 @@ class mod_attendance_structure {
     private $allstatuses;
 
     /** @var array of sessionid. */
-    private $sessioninfo = array();
+    private $sessioninfo = [];
 
     /** @var float number [0..1], the threshold for student to be shown at low grade report */
     private $lowgradethreshold;
@@ -141,13 +141,13 @@ public function __construct(stdClass $dbrecord, stdClass $cm, stdClass $course,
         $this->pageparams = $pageparams;
 
         if (isset($pageparams->showextrauserdetails) && $pageparams->showextrauserdetails != $this->showextrauserdetails) {
-            $DB->set_field('attendance', 'showextrauserdetails', $pageparams->showextrauserdetails, array('id' => $this->id));
+            $DB->set_field('attendance', 'showextrauserdetails', $pageparams->showextrauserdetails, ['id' => $this->id]);
         }
         if (isset($pageparams->showsessiondetails) && $pageparams->showsessiondetails != $this->showsessiondetails) {
-            $DB->set_field('attendance', 'showsessiondetails', $pageparams->showsessiondetails, array('id' => $this->id));
+            $DB->set_field('attendance', 'showsessiondetails', $pageparams->showsessiondetails, ['id' => $this->id]);
         }
         if (isset($pageparams->sessiondetailspos) && $pageparams->sessiondetailspos != $this->sessiondetailspos) {
-            $DB->set_field('attendance', 'sessiondetailspos', $pageparams->sessiondetailspos, array('id' => $this->id));
+            $DB->set_field('attendance', 'sessiondetailspos', $pageparams->sessiondetailspos, ['id' => $this->id]);
         }
     }
 
@@ -179,9 +179,9 @@ public function get_current_sessions() : array {
                   FROM {attendance_sessions}
                  WHERE :time BETWEEN sessdate AND (sessdate + duration)
                    AND attendanceid = :aid";
-        $params = array(
+        $params = [
             'time'  => $today,
-            'aid'   => $this->id);
+            'aid'   => $this->id, ];
 
         return $DB->get_records_sql($sql, $params);
     }
@@ -203,10 +203,10 @@ public function get_today_sessions() : array {
                   FROM {attendance_sessions}
                  WHERE sessdate >= :start AND sessdate < :end
                    AND attendanceid = :aid";
-        $params = array(
+        $params = [
             'start' => $start,
             'end'   => $end,
-            'aid'   => $this->id);
+            'aid'   => $this->id, ];
 
         return $DB->get_records_sql($sql, $params);
     }
@@ -228,11 +228,11 @@ public function get_today_sessions_for_copy($sess) : array {
                  WHERE sessdate >= :start AND sessdate <= :end AND
                        (groupid = 0 OR groupid = :groupid) AND
                        lasttaken > 0 AND attendanceid = :aid";
-        $params = array(
+        $params = [
             'start'     => $start,
             'end'       => $sess->sessdate,
             'groupid'   => $sess->groupid,
-            'aid'       => $this->id);
+            'aid'       => $this->id, ];
 
         return $DB->get_records_sql($sql, $params);
     }
@@ -248,9 +248,9 @@ public function get_hidden_sessions_count() : int {
         global $DB;
 
         $where = "attendanceid = :aid AND sessdate < :csdate";
-        $params = array(
+        $params = [
             'aid'   => $this->id,
-            'csdate' => $this->course->startdate);
+            'csdate' => $this->course->startdate, ];
 
         return $DB->count_records_select('attendance_sessions', $where, $params);
     }
@@ -266,9 +266,9 @@ public function get_hidden_sessions() : array {
         global $DB;
 
         $where = "attendanceid = :aid AND sessdate < :csdate";
-        $params = array(
+        $params = [
             'aid'   => $this->id,
-            'csdate' => $this->course->startdate);
+            'csdate' => $this->course->startdate, ];
 
         return $DB->get_records_select('attendance_sessions', $where, $params);
     }
@@ -292,12 +292,12 @@ public function get_filtered_sessions() : array {
         if ($this->pageparams->get_current_sesstype() > mod_attendance_page_with_filter_controls::SESSTYPE_ALL) {
             $where .= " AND (groupid = :cgroup OR groupid = 0)";
         }
-        $params = array(
+        $params = [
             'aid'       => $this->id,
             'csdate'    => $this->course->startdate,
             'sdate'     => $this->pageparams->startdate,
             'edate'     => $this->pageparams->enddate,
-            'cgroup'    => $this->pageparams->get_current_sesstype());
+            'cgroup'    => $this->pageparams->get_current_sesstype(), ];
         $sessions = $DB->get_records_select('attendance_sessions', $where, $params, 'sessdate asc');
         $statussetmaxpoints = attendance_get_statusset_maxpoints($this->get_statuses(true, true));
         foreach ($sessions as $sess) {
@@ -318,8 +318,8 @@ public function get_filtered_sessions() : array {
      * @param array $params
      * @return moodle_url of manage.php for attendance instance
      */
-    public function url_manage($params=array()) : moodle_url {
-        $params = array_merge(array('id' => $this->cm->id), $params);
+    public function url_manage($params=[]) : moodle_url {
+        $params = array_merge(['id' => $this->cm->id], $params);
         return new moodle_url('/mod/attendance/manage.php', $params);
     }
 
@@ -328,8 +328,8 @@ public function url_manage($params=array()) : moodle_url {
      * @param array $params optional
      * @return moodle_url of tempusers.php for attendance instance
      */
-    public function url_managetemp($params=array()) : moodle_url {
-        $params = array_merge(array('id' => $this->cm->id), $params);
+    public function url_managetemp($params=[]) : moodle_url {
+        $params = array_merge(['id' => $this->cm->id], $params);
         return new moodle_url('/mod/attendance/tempusers.php', $params);
     }
 
@@ -339,8 +339,8 @@ public function url_managetemp($params=array()) : moodle_url {
      * @param array $params optional
      * @return moodle_url of tempdelete.php for attendance instance
      */
-    public function url_tempdelete($params=array()) : moodle_url {
-        $params = array_merge(array('id' => $this->cm->id, 'action' => 'delete'), $params);
+    public function url_tempdelete($params=[]) : moodle_url {
+        $params = array_merge(['id' => $this->cm->id, 'action' => 'delete'], $params);
         return new moodle_url('/mod/attendance/tempedit.php', $params);
     }
 
@@ -350,8 +350,8 @@ public function url_tempdelete($params=array()) : moodle_url {
      * @param array $params optional
      * @return moodle_url of tempedit.php for attendance instance
      */
-    public function url_tempedit($params=array()) : moodle_url {
-        $params = array_merge(array('id' => $this->cm->id), $params);
+    public function url_tempedit($params=[]) : moodle_url {
+        $params = array_merge(['id' => $this->cm->id], $params);
         return new moodle_url('/mod/attendance/tempedit.php', $params);
     }
 
@@ -361,8 +361,8 @@ public function url_tempedit($params=array()) : moodle_url {
      * @param array $params optional
      * @return moodle_url of tempedit.php for attendance instance
      */
-    public function url_tempmerge($params=array()) : moodle_url {
-        $params = array_merge(array('id' => $this->cm->id), $params);
+    public function url_tempmerge($params=[]) : moodle_url {
+        $params = array_merge(['id' => $this->cm->id], $params);
         return new moodle_url('/mod/attendance/tempmerge.php', $params);
     }
 
@@ -371,8 +371,8 @@ public function url_tempmerge($params=array()) : moodle_url {
      * @param array $params
      * @return moodle_url of sessions.php for attendance instance
      */
-    public function url_sessions($params=array()) : moodle_url {
-        $params = array_merge(array('id' => $this->cm->id), $params);
+    public function url_sessions($params=[]) : moodle_url {
+        $params = array_merge(['id' => $this->cm->id], $params);
         return new moodle_url('/mod/attendance/sessions.php', $params);
     }
 
@@ -381,8 +381,8 @@ public function url_sessions($params=array()) : moodle_url {
      * @param array $params
      * @return moodle_url of report.php for attendance instance
      */
-    public function url_report($params=array()) : moodle_url {
-        $params = array_merge(array('id' => $this->cm->id), $params);
+    public function url_report($params=[]) : moodle_url {
+        $params = array_merge(['id' => $this->cm->id], $params);
         return new moodle_url('/mod/attendance/report.php', $params);
     }
 
@@ -391,8 +391,8 @@ public function url_report($params=array()) : moodle_url {
      * @param array $params
      * @return moodle_url of report.php for attendance instance
      */
-    public function url_absentee($params=array()) : moodle_url {
-        $params = array_merge(array('id' => $this->cm->id), $params);
+    public function url_absentee($params=[]) : moodle_url {
+        $params = array_merge(['id' => $this->cm->id], $params);
         return new moodle_url('/mod/attendance/absentee.php', $params);
     }
 
@@ -412,7 +412,7 @@ public function url_import() : moodle_url {
      * @return moodle_url of export.php for attendance instance
      */
     public function url_export() : moodle_url {
-        $params = array('id' => $this->cm->id);
+        $params = ['id' => $this->cm->id];
         return new moodle_url('/mod/attendance/export.php', $params);
     }
 
@@ -421,12 +421,12 @@ public function url_export() : moodle_url {
      * @param array $params
      * @return moodle_url of attsettings.php for attendance instance
      */
-    public function url_preferences($params=array()) : moodle_url {
+    public function url_preferences($params=[]) : moodle_url {
         // Add the statusset params.
         if (isset($this->pageparams->statusset) && !isset($params['statusset'])) {
             $params['statusset'] = $this->pageparams->statusset;
         }
-        $params = array_merge(array('id' => $this->cm->id), $params);
+        $params = array_merge(['id' => $this->cm->id], $params);
         return new moodle_url('/mod/attendance/preferences.php', $params);
     }
 
@@ -435,12 +435,12 @@ public function url_preferences($params=array()) : moodle_url {
      * @param array $params
      * @return moodle_url of attsettings.php for attendance instance
      */
-    public function url_warnings($params=array()) : moodle_url {
+    public function url_warnings($params=[]) : moodle_url {
         // Add the statusset params.
         if (isset($this->pageparams->statusset) && !isset($params['statusset'])) {
             $params['statusset'] = $this->pageparams->statusset;
         }
-        $params = array_merge(array('id' => $this->cm->id), $params);
+        $params = array_merge(['id' => $this->cm->id], $params);
         return new moodle_url('/mod/attendance/warnings.php', $params);
     }
 
@@ -449,8 +449,8 @@ public function url_warnings($params=array()) : moodle_url {
      * @param array $params
      * @return moodle_url of attendances.php for attendance instance
      */
-    public function url_take($params=array()) : moodle_url {
-        $params = array_merge(array('id' => $this->cm->id), $params);
+    public function url_take($params=[]) : moodle_url {
+        $params = array_merge(['id' => $this->cm->id], $params);
         return new moodle_url('/mod/attendance/take.php', $params);
     }
 
@@ -459,8 +459,8 @@ public function url_take($params=array()) : moodle_url {
      * @param array $params
      * @return moodle_url
      */
-    public function url_view($params=array()) : moodle_url {
-        $params = array_merge(array('id' => $this->cm->id), $params);
+    public function url_view($params=[]) : moodle_url {
+        $params = array_merge(['id' => $this->cm->id], $params);
         return new moodle_url('/mod/attendance/view.php', $params);
     }
 
@@ -510,22 +510,22 @@ public function add_session($sess) : int {
         $sess->id = $DB->insert_record('attendance_sessions', $sess);
         $description = file_save_draft_area_files($sess->descriptionitemid,
             $this->context->id, 'mod_attendance', 'session', $sess->id,
-            array('subdirs' => false, 'maxfiles' => -1, 'maxbytes' => 0),
+            ['subdirs' => false, 'maxfiles' => -1, 'maxbytes' => 0],
             $sess->description);
-        $DB->set_field('attendance_sessions', 'description', $description, array('id' => $sess->id));
+        $DB->set_field('attendance_sessions', 'description', $description, ['id' => $sess->id]);
 
         $sess->caleventid = 0;
         attendance_create_calendar_event($sess);
 
-        $infoarray = array();
+        $infoarray = [];
         $infoarray[] = construct_session_full_date_time($sess->sessdate, $sess->duration);
 
         // Trigger a session added event.
-        $event = \mod_attendance\event\session_added::create(array(
+        $event = \mod_attendance\event\session_added::create([
             'objectid' => $this->id,
             'context' => $this->context,
-            'other' => array('info' => implode(',', $infoarray))
-        ));
+            'other' => ['info' => implode(',', $infoarray)],
+        ]);
         $event->add_record_snapshot('course_modules', $this->cm);
         $sess->description = $description;
         $sess->lasttaken = 0;
@@ -581,7 +581,7 @@ public function add_session($sess) : int {
     public function update_session_from_form_data($formdata, $sessionid) {
         global $DB;
 
-        if (!$sess = $DB->get_record('attendance_sessions', array('id' => $sessionid) )) {
+        if (!$sess = $DB->get_record('attendance_sessions', ['id' => $sessionid] )) {
             throw new moodle_exception('No such session in this course');
         }
 
@@ -593,7 +593,7 @@ public function update_session_from_form_data($formdata, $sessionid) {
 
         $description = file_save_draft_area_files($formdata->sdescription['itemid'],
             $this->context->id, 'mod_attendance', 'session', $sessionid,
-            array('subdirs' => false, 'maxfiles' => -1, 'maxbytes' => 0), $formdata->sdescription['text']);
+            ['subdirs' => false, 'maxfiles' => -1, 'maxbytes' => 0], $formdata->sdescription['text']);
         $sess->description = $description;
         $sess->descriptionformat = $formdata->sdescription['format'];
         $sess->calendarevent = empty($formdata->calendarevent) ? 0 : $formdata->calendarevent;
@@ -669,11 +669,11 @@ public function update_session_from_form_data($formdata, $sessionid) {
         }
 
         $info = construct_session_full_date_time($sess->sessdate, $sess->duration);
-        $event = \mod_attendance\event\session_updated::create(array(
+        $event = \mod_attendance\event\session_updated::create([
             'objectid' => $this->id,
             'context' => $this->context,
-            'other' => array('info' => $info, 'sessionid' => $sessionid,
-                'action' => mod_attendance_sessions_page_params::ACTION_UPDATE)));
+            'other' => ['info' => $info, 'sessionid' => $sessionid,
+                'action' => mod_attendance_sessions_page_params::ACTION_UPDATE, ]]);
         $event->add_record_snapshot('course_modules', $this->cm);
         $event->add_record_snapshot('attendance_sessions', $sess);
         $event->trigger();
@@ -702,7 +702,7 @@ public function take_from_student($mformdata) : bool {
         $record->ipaddress = getremoteaddr(null);
 
         $existingattendance = $DB->get_field('attendance_log', 'id',
-                            array('sessionid' => $mformdata->sessid, 'studentid' => $USER->id));
+                            ['sessionid' => $mformdata->sessid, 'studentid' => $USER->id]);
 
         if (!empty($existingattendance)) {
             if (!attendance_check_allow_update($mformdata->sessid)) {
@@ -724,21 +724,21 @@ public function take_from_student($mformdata) : bool {
         $DB->update_record('attendance_sessions', $session);
 
         // Update the users grade.
-        $this->update_users_grade(array($USER->id));
+        $this->update_users_grade([$USER->id]);
 
         /* create url for link in log screen
          * need to set grouptype to 0 to allow take attendance page to be called
          * from report/log page */
 
-        $params = array(
+        $params = [
             'sessionid' => $this->pageparams->sessionid,
-            'grouptype' => 0);
+            'grouptype' => 0, ];
 
         // Log the change.
-        $event = \mod_attendance\event\attendance_taken_by_student::create(array(
+        $event = \mod_attendance\event\attendance_taken_by_student::create([
             'objectid' => $this->id,
             'context' => $this->context,
-            'other' => $params));
+            'other' => $params]);
         $event->add_record_snapshot('course_modules', $this->cm);
         $event->add_record_snapshot('attendance_sessions', $session);
         $event->add_record_snapshot('attendance_log', $record);
@@ -758,7 +758,7 @@ public function take_from_form_data($data) {
 
         $statuses = implode(',', array_keys( (array)$this->get_statuses() ));
         $now = time();
-        $sesslog = array();
+        $sesslog = [];
 
         $formdata = (array)$data;
 
@@ -826,13 +826,13 @@ public function save_log($sesslog) {
         }
 
         // Create url for link in log screen.
-        $params = array(
+        $params = [
             'sessionid' => $this->pageparams->sessionid,
-            'grouptype' => $this->pageparams->grouptype);
-        $event = \mod_attendance\event\attendance_taken::create(array(
+            'grouptype' => $this->pageparams->grouptype, ];
+        $event = \mod_attendance\event\attendance_taken::create([
             'objectid' => $this->id,
             'context' => $this->context,
-            'other' => $params));
+            'other' => $params]);
         $event->add_record_snapshot('course_modules', $this->cm);
         $event->add_record_snapshot('attendance_sessions', $session);
         $event->trigger();
@@ -849,7 +849,7 @@ public function get_users($groupid = 0, $page = 1) : array {
         global $DB, $CFG;
         require_once($CFG->dirroot . '/user/profile/lib.php'); // For profile_load_data function.
 
-        $fields = array('username' , 'idnumber' , 'institution' , 'department', 'city', 'country');
+        $fields = ['username' , 'idnumber' , 'institution' , 'department', 'city', 'country'];
         $userf = \core_user\fields::for_identity($this->context, false)->with_userpic()->including(...$fields);
         $userfields = $userf->get_sql('u', false, '', 'id', false)->selects;
 
@@ -916,7 +916,7 @@ public function get_users($groupid = 0, $page = 1) : array {
                            AND e.status = :estatus
                            AND e.courseid = :courseid
                   GROUP BY ue.userid";
-            $params += array('zerotime' => 0, 'estatus' => ENROL_INSTANCE_ENABLED, 'courseid' => $this->course->id);
+            $params += ['zerotime' => 0, 'estatus' => ENROL_INSTANCE_ENABLED, 'courseid' => $this->course->id];
             $enrolments = $DB->get_records_sql($sql, $params);
 
             foreach ($users as $user) {
@@ -929,7 +929,7 @@ public function get_users($groupid = 0, $page = 1) : array {
         }
 
         // Add the 'temporary' users to this list.
-        $tempusers = $DB->get_records('attendance_tempusers', array('courseid' => $this->course->id));
+        $tempusers = $DB->get_records('attendance_tempusers', ['courseid' => $this->course->id]);
         foreach ($tempusers as $tempuser) {
             $users[$tempuser->studentid] = self::tempuser_to_user($tempuser);
         }
@@ -951,7 +951,7 @@ public function get_users($groupid = 0, $page = 1) : array {
     protected static function tempuser_to_user($tempuser) {
         global $CFG;
 
-        $ret = (object)array(
+        $ret = (object)[
             'id' => $tempuser->studentid,
             'firstname' => $tempuser->fullname,
             'email' => $tempuser->email,
@@ -961,7 +961,7 @@ protected static function tempuser_to_user($tempuser) {
             'enrolmentend' => 0,
             'picture' => 0,
             'type' => 'temporary',
-        );
+        ];
         $allfields = \core_user\fields::get_name_fields();
         if (!empty($CFG->showuseridentity)) {
             $allfields = array_merge($allfields, explode(',', $CFG->showuseridentity));
@@ -985,11 +985,11 @@ protected static function tempuser_to_user($tempuser) {
     public function get_user($userid) {
         global $DB;
 
-        $user = $DB->get_record('user', array('id' => $userid), '*', MUST_EXIST);
+        $user = $DB->get_record('user', ['id' => $userid], '*', MUST_EXIST);
 
         // Look for 'temporary' users and return their details from the attendance_tempusers table.
         if ($user->idnumber == 'tempghost') {
-            $tempuser = $DB->get_record('attendance_tempusers', array('studentid' => $userid), '*', MUST_EXIST);
+            $tempuser = $DB->get_record('attendance_tempusers', ['studentid' => $userid], '*', MUST_EXIST);
             return self::tempuser_to_user($tempuser);
         }
 
@@ -1008,7 +1008,7 @@ public function get_user($userid) {
                        AND e.status = :estatus
                        AND e.courseid = :courseid
               GROUP BY ue.userid, ue.status";
-        $params = array('zerotime' => 0, 'uid' => $userid, 'estatus' => ENROL_INSTANCE_ENABLED, 'courseid' => $this->course->id);
+        $params = ['zerotime' => 0, 'uid' => $userid, 'estatus' => ENROL_INSTANCE_ENABLED, 'courseid' => $this->course->id];
         $enrolments = $DB->get_record_sql($sql, $params);
         if (!empty($enrolments)) {
             $user->enrolmentstatus = $enrolments->status;
@@ -1092,7 +1092,7 @@ public function get_session_info($sessionid) {
         global $DB;
 
         if (!array_key_exists($sessionid, $this->sessioninfo)) {
-            $this->sessioninfo[$sessionid] = $DB->get_record('attendance_sessions', array('id' => $sessionid));
+            $this->sessioninfo[$sessionid] = $DB->get_record('attendance_sessions', ['id' => $sessionid]);
         }
         if (empty($this->sessioninfo[$sessionid]->description)) {
             $this->sessioninfo[$sessionid]->description = get_string('nodescription', 'attendance');
@@ -1136,7 +1136,7 @@ public function get_sessions_info($sessionids) : array {
     public function get_session_log($sessionid) : array {
         global $DB;
 
-        return $DB->get_records('attendance_log', array('sessionid' => $sessionid), '', 'studentid,statusid,remarks,id,statusset');
+        return $DB->get_records('attendance_log', ['sessionid' => $sessionid], '', 'studentid,statusid,remarks,id,statusset');
     }
 
     /**
@@ -1170,12 +1170,12 @@ public function get_user_filtered_sessions_log($userid) : array {
                  WHERE $where AND (ats.groupid = 0 or gm.id is NOT NULL)
               ORDER BY ats.sessdate ASC";
 
-            $params = array(
+            $params = [
                 'uid'       => $userid,
                 'aid'       => $this->id,
                 'csdate'    => $this->course->startdate,
                 'sdate'     => $this->pageparams->startdate,
-                'edate'     => $this->pageparams->enddate);
+                'edate'     => $this->pageparams->enddate, ];
 
         } else {
             $sql = "SELECT ats.id, ats.sessdate, ats.groupid, al.statusid, al.remarks,
@@ -1186,12 +1186,12 @@ public function get_user_filtered_sessions_log($userid) : array {
                  WHERE $where
               ORDER BY ats.sessdate ASC";
 
-            $params = array(
+            $params = [
                 'uid'       => $userid,
                 'aid'       => $this->id,
                 'csdate'    => $this->course->startdate,
                 'sdate'     => $this->pageparams->startdate,
-                'edate'     => $this->pageparams->enddate);
+                'edate'     => $this->pageparams->enddate, ];
         }
         $sessions = $DB->get_records_sql($sql, $params);
 
@@ -1242,13 +1242,13 @@ public function get_user_filtered_sessions_log_extended($userid) : array {
                   ORDER BY ats.sessdate ASC";
         }
 
-        $params = array(
+        $params = [
             'uid'       => $userid,
             'aid'       => $this->id,
             'csdate'    => $this->course->startdate,
             'sdate'     => $this->pageparams->startdate,
             'edate'     => $this->pageparams->enddate,
-            'value'     => 'c');
+            'value'     => 'c', ];
         $sessions = $DB->get_records_sql($sql, $params);
 
         // All sessions for current groups.
@@ -1301,10 +1301,10 @@ public function delete_sessions($sessionsids) {
         list($sql, $params) = $DB->get_in_or_equal($sessionsids);
         $DB->delete_records_select('attendance_log', "sessionid $sql", $params);
         $DB->delete_records_list('attendance_sessions', 'id', $sessionsids);
-        $event = \mod_attendance\event\session_deleted::create(array(
+        $event = \mod_attendance\event\session_deleted::create([
             'objectid' => $this->id,
             'context' => $this->context,
-            'other' => array('info' => implode(', ', $sessionsids))));
+            'other' => ['info' => implode(', ', $sessionsids)]]);
         $event->add_record_snapshot('course_modules', $this->cm);
         $event->trigger();
     }
@@ -1327,10 +1327,10 @@ public function update_sessions_duration($sessionsids, $duration) {
             if ($sess->caleventid) {
                 attendance_update_calendar_event($sess);
             }
-            $event = \mod_attendance\event\session_duration_updated::create(array(
+            $event = \mod_attendance\event\session_duration_updated::create([
                 'objectid' => $this->id,
                 'context' => $this->context,
-                'other' => array('info' => implode(', ', $sessionsids))));
+                'other' => ['info' => implode(', ', $sessionsids)]]);
             $event->add_record_snapshot('course_modules', $this->cm);
             $event->add_record_snapshot('attendance_sessions', $sess);
             $event->trigger();
@@ -1352,12 +1352,12 @@ public static function check_existing_email($email, $tempuserid = 0) {
         if (empty($email)) {
             return null; // Fine to create temporary users without an email address.
         }
-        if ($tempuser = $DB->get_record('attendance_tempusers', array('email' => $email), 'id')) {
+        if ($tempuser = $DB->get_record('attendance_tempusers', ['email' => $email], 'id')) {
             if ($tempuser->id != $tempuserid) {
                 return get_string('tempexists', 'attendance');
             }
         }
-        if ($DB->record_exists('user', array('email' => $email))) {
+        if ($DB->record_exists('user', ['email' => $email])) {
             return get_string('userexists', 'attendance');
         }
 
@@ -1417,8 +1417,8 @@ public function get_lowgrade_threshold() {
             $this->lowgradethreshold = 1;
 
             if ($this->grade > 0) {
-                $gradeitem = grade_item::fetch(array('courseid' => $this->course->id, 'itemtype' => 'mod',
-                    'itemmodule' => 'attendance', 'iteminstance' => $this->id, 'itemnumber' => 0));
+                $gradeitem = grade_item::fetch(['courseid' => $this->course->id, 'itemtype' => 'mod',
+                    'itemmodule' => 'attendance', 'iteminstance' => $this->id, 'itemnumber' => 0]);
                 if ($gradeitem->gradepass > 0 && $gradeitem->grademax != $gradeitem->grademin) {
                     $this->lowgradethreshold = ($gradeitem->gradepass - $gradeitem->grademin) /
                         ($gradeitem->grademax - $gradeitem->grademin);
diff --git a/classes/summary.php b/classes/summary.php
index 2e83facdbe1..b1049ea0755 100644
--- a/classes/summary.php
+++ b/classes/summary.php
@@ -60,7 +60,7 @@ class mod_attendance_summary {
      * @param int $startdate Attendance sessions startdate
      * @param int $enddate Attendance sessions enddate
      */
-    public function __construct($attendanceid, $userids=array(), $startdate = '', $enddate = '') {
+    public function __construct($attendanceid, $userids=[], $startdate = '', $enddate = '') {
         $this->attendanceid = $attendanceid;
 
         $this->compute_users_points($userids, $startdate, $enddate);
@@ -102,7 +102,7 @@ public function get_groupmode() {
      * @return array
      */
     public function get_user_taken_sessions_percentages() {
-        $percentages = array();
+        $percentages = [];
 
         foreach ($this->userspoints as $userid => $userpoints) {
             $percentages[$userid] = attendance_calc_fraction($userpoints->points, $userpoints->maxpoints);
@@ -134,7 +134,7 @@ public function get_taken_sessions_summary_for($userid) {
         if (isset($this->userstakensessionsbyacronym[$userid])) {
             $usersummary->userstakensessionsbyacronym = $this->userstakensessionsbyacronym[$userid];
         } else {
-            $usersummary->userstakensessionsbyacronym = array();
+            $usersummary->userstakensessionsbyacronym = [];
         }
 
         $usersummary->pointssessionscompleted = format_float($usersummary->takensessionspoints, 1, true, true) . ' / ' .
@@ -204,17 +204,17 @@ public function get_all_sessions_summary_for($userid) {
      * @param int $enddate Attendance sessions enddate
      * @return  (userid, numtakensessions, points, maxpoints)
      */
-    private function compute_users_points($userids=array(), $startdate = '', $enddate = '') {
+    private function compute_users_points($userids=[], $startdate = '', $enddate = '') {
         global $DB;
 
         list($this->course, $cm) = get_course_and_cm_from_instance($this->attendanceid, 'attendance');
         $this->groupmode = $cm->effectivegroupmode;
 
-        $params = array(
+        $params = [
             'attid'      => $this->attendanceid,
             'attid2'     => $this->attendanceid,
             'cstartdate' => $this->course->startdate,
-            );
+            ];
 
         $where = '';
         if (!empty($userids)) {
@@ -268,16 +268,16 @@ private function compute_users_points($userids=array(), $startdate = '', $enddat
      * @param int $enddate Attendance sessions enddate
      * @return  null
      */
-    private function compute_users_taken_sessions_by_acronym($userids=array(), $startdate = '', $enddate = '') {
+    private function compute_users_taken_sessions_by_acronym($userids=[], $startdate = '', $enddate = '') {
         global $DB;
 
         list($this->course, $cm) = get_course_and_cm_from_instance($this->attendanceid, 'attendance');
         $this->groupmode = $cm->effectivegroupmode;
 
-        $params = array(
+        $params = [
             'attid'      => $this->attendanceid,
             'cstartdate' => $this->course->startdate,
-            );
+            ];
 
         $where = '';
         if (!empty($userids)) {
@@ -315,7 +315,7 @@ private function compute_users_taken_sessions_by_acronym($userids=array(), $star
                    AND ats.lasttaken != 0
                    {$where}
               GROUP BY atl.studentid, sts.setnumber, sts.acronym";
-        $this->userstakensessionsbyacronym = array();
+        $this->userstakensessionsbyacronym = [];
         $records = $DB->get_recordset_sql($sql, $params);
         foreach ($records as $rec) {
             $this->userstakensessionsbyacronym[$rec->userid][$rec->setnumber][$rec->acronym] = $rec->numtakensessions;
@@ -331,11 +331,11 @@ private function compute_users_taken_sessions_by_acronym($userids=array(), $star
     private function compute_maxpoints_by_group_session() {
         global $DB;
 
-        $params = array(
+        $params = [
             'attid'      => $this->attendanceid,
             'attid2'     => $this->attendanceid,
             'cstartdate' => $this->course->startdate,
-            );
+            ];
 
         $where = '';
         if (!$this->with_groups()) {
diff --git a/classes/take_page_params.php b/classes/take_page_params.php
index b68c5281770..b9cffd50747 100644
--- a/classes/take_page_params.php
+++ b/classes/take_page_params.php
@@ -101,7 +101,7 @@ private function init_gridcols() {
      * @return array
      */
     public function get_significant_params() {
-        $params = array();
+        $params = [];
 
         $params['sessionid'] = $this->sessionid;
         $params['grouptype'] = $this->grouptype;
diff --git a/classes/task/auto_mark.php b/classes/task/auto_mark.php
index 66c26e0c43c..2bd77167fc7 100644
--- a/classes/task/auto_mark.php
+++ b/classes/task/auto_mark.php
@@ -52,9 +52,9 @@ public function get_name() {
     public function execute() {
         global $DB;
         // Create some cache vars - might be nice to restructure this and make a smaller number of sql calls.
-        $cachecm = array();
-        $cacheatt = array();
-        $cachecourse = array();
+        $cachecm = [];
+        $cacheatt = [];
+        $cachecourse = [];
         $sql = "SELECT se.*, ss.id as setunmarked
                   FROM {attendance_sessions} se
              LEFT JOIN {attendance_statuses} ss ON ss.attendanceid = se.attendanceid
@@ -65,7 +65,7 @@ public function execute() {
 
         foreach ($sessions as $session) {
             if (empty($cacheatt[$session->attendanceid])) {
-                $cacheatt[$session->attendanceid] = $DB->get_record('attendance', array('id' => $session->attendanceid));
+                $cacheatt[$session->attendanceid] = $DB->get_record('attendance', ['id' => $session->attendanceid]);
             }
             if (empty($cachecm[$session->attendanceid])) {
                 $cachecm[$session->attendanceid] = get_coursemodule_from_instance('attendance',
@@ -73,7 +73,7 @@ public function execute() {
             }
             $courseid = $cacheatt[$session->attendanceid]->course;
             if (empty($cachecourse[$courseid])) {
-                $cachecourse[$courseid] = $DB->get_record('course', array('id' => $courseid));
+                $cachecourse[$courseid] = $DB->get_record('course', ['id' => $courseid]);
             }
             \mod_attendance\local\automark::session($session, $cachecourse[$courseid], $cachecm[$session->attendanceid],
                                                     $cacheatt[$session->attendanceid]);
diff --git a/classes/task/clear_temporary_passwords.php b/classes/task/clear_temporary_passwords.php
index 86819410210..a20eaf3d63e 100644
--- a/classes/task/clear_temporary_passwords.php
+++ b/classes/task/clear_temporary_passwords.php
@@ -47,7 +47,7 @@ public function get_name() {
     public function execute() {
         global $DB;
 
-        $params = array('currenttime' => time());
+        $params = ['currenttime' => time()];
         $DB->delete_records_select('attendance_rotate_passwords', 'expirytime < :currenttime', $params);
     }
 }
diff --git a/classes/task/notify.php b/classes/task/notify.php
index f7aa4e55ae8..74feee2b4be 100644
--- a/classes/task/notify.php
+++ b/classes/task/notify.php
@@ -61,14 +61,14 @@ public function execute() {
         // Note: this returns all users for these sessions - even if the users attendance wasn't changed
         // since last time we ran, before sending a notification we check to see if the users have
         // updated attendance logs since last time they were notified.
-        $records = attendance_get_users_to_notify(array(), $orderby, true);
-        $sentnotifications = array();
-        $thirdpartynotifications = array();
+        $records = attendance_get_users_to_notify([], $orderby, true);
+        $sentnotifications = [];
+        $thirdpartynotifications = [];
         $numsentusers = 0;
         $numsentthird = 0;
         foreach ($records as $record) {
             if (empty($sentnotifications[$record->userid])) {
-                $sentnotifications[$record->userid] = array();
+                $sentnotifications[$record->userid] = [];
             }
 
             if (!empty($record->emailuser)) {
@@ -83,14 +83,14 @@ public function execute() {
                               FROM {attendance_log} l
                               JOIN {attendance_sessions} s ON s.id = l.sessionid
                              WHERE s.attendanceid = ? AND studentid = ? AND timetaken > ?";
-                        if (!$DB->record_exists_sql($sql, array($record->aid, $record->userid, $record->timesent))) {
+                        if (!$DB->record_exists_sql($sql, [$record->aid, $record->userid, $record->timesent])) {
                             continue; // Skip this record and move to the next user.
                         }
                     }
 
                     // Convert variables in emailcontent.
                     $record = attendance_template_variables($record);
-                    $user = $DB->get_record('user', array('id' => $record->userid));
+                    $user = $DB->get_record('user', ['id' => $record->userid]);
                     $from = \core_user::get_noreply_user();
                     $oldforcelang = force_current_language($user->lang);
 
@@ -104,7 +104,7 @@ public function execute() {
                 }
             }
             // Only send one warning to this user from each attendance in this run. - flag any higher percent notifications as sent.
-            $thirdpartyusers = array();
+            $thirdpartyusers = [];
             if (!empty($record->thirdpartyemails)) {
                 $sendto = explode(',', $record->thirdpartyemails);
                 $record->percent = round($record->percent * 100)."%";
@@ -120,7 +120,7 @@ public function execute() {
                     // Check user is allowed to receive warningemails.
                     if (has_capability('mod/attendance:warningemails', $context, $senduser)) {
                         if (empty($thirdpartynotifications[$senduser])) {
-                            $thirdpartynotifications[$senduser] = array();
+                            $thirdpartynotifications[$senduser] = [];
                         }
                         if (!isset($thirdpartynotifications[$senduser][$record->aid . '_' . $record->userid])) {
                             $thirdpartynotifications[$senduser][$record->aid . '_' . $record->userid]
@@ -142,7 +142,7 @@ public function execute() {
         }
         if (!empty($thirdpartynotifications)) {
             foreach ($thirdpartynotifications as $sendid => $notifications) {
-                $user = $DB->get_record('user', array('id' => $sendid));
+                $user = $DB->get_record('user', ['id' => $sendid]);
                 if (empty($user) || !empty($user->deleted)) {
                     // Clean this user up and remove from the notification list.
                     $warnings = $DB->get_records_list('attendance_warning', 'id', $thirdpartyusers[$sendid]);
diff --git a/classes/view_page_params.php b/classes/view_page_params.php
index f7340f425be..eb011ac71c0 100644
--- a/classes/view_page_params.php
+++ b/classes/view_page_params.php
@@ -63,7 +63,7 @@ public function  __construct() {
      * @return array
      */
     public function get_significant_params() {
-        $params = array();
+        $params = [];
 
         if (isset($this->studentid)) {
             $params['studentid'] = $this->studentid;
diff --git a/coursesummary.php b/coursesummary.php
index 64d4e18e337..34da49fb7ad 100644
--- a/coursesummary.php
+++ b/coursesummary.php
@@ -43,18 +43,18 @@
 
 if (empty($category)) {
     $context = context_system::instance();
-    $courses = array(); // Show all courses.
+    $courses = []; // Show all courses.
 } else {
     $context = context_coursecat::instance($category);
     $coursecat = core_course_category::get($category);
-    $courses = $coursecat->get_courses(array('recursive' => true, 'idonly' => true));
+    $courses = $coursecat->get_courses(['recursive' => true, 'idonly' => true]);
 }
 // Check permissions.
 require_capability('mod/attendance:viewsummaryreports', $context);
 
 $exportfilename = 'attendancecoursesummary.csv';
 
-$PAGE->set_url('/mod/attendance/coursesummary.php', array('category' => $category));
+$PAGE->set_url('/mod/attendance/coursesummary.php', ['category' => $category]);
 
 $PAGE->set_heading($SITE->fullname);
 
@@ -73,7 +73,7 @@
         $tabmenu = attendance_print_settings_tabs('coursesummary');
         echo $tabmenu;
     }
-    $url = new moodle_url('/mod/attendance/coursesummary.php', array('category' => $category, 'fromcourse' => $fromcourse));
+    $url = new moodle_url('/mod/attendance/coursesummary.php', ['category' => $category, 'fromcourse' => $fromcourse]);
 
     if ($admin) {
         $options = core_course_category::make_categories_list('mod/attendance:viewsummaryreports');
@@ -82,14 +82,14 @@
 
 }
 
-$table->define_columns(array('course', 'percentage'));
-$table->define_headers(array(get_string('course'),
-    get_string('averageattendance', 'attendance')));
+$table->define_columns(['course', 'percentage']);
+$table->define_headers([get_string('course'),
+    get_string('averageattendance', 'attendance')]);
 $table->sortable(true);
 $table->no_sorting('course');
 $table->set_attribute('cellspacing', '0');
 $table->set_attribute('class', 'generaltable generalbox');
-$table->show_download_buttons_at(array(TABLE_P_BOTTOM));
+$table->show_download_buttons_at([TABLE_P_BOTTOM]);
 $table->setup();
 
 // Work out direction of sort required.
@@ -115,12 +115,12 @@
 $records = attendance_course_users_points($courses, $orderby);
 foreach ($records as $record) {
     if (!$table->is_downloading($download, $exportfilename)) {
-        $url = new moodle_url('/mod/attendance/index.php', array('id' => $record->courseid));
+        $url = new moodle_url('/mod/attendance/index.php', ['id' => $record->courseid]);
         $name = html_writer::link($url, $record->coursename);
     } else {
         $name = $record->coursename;
     }
-    $table->add_data(array($name, round($record->percentage * 100)."%"));
+    $table->add_data([$name, round($record->percentage * 100)."%"]);
 }
 $table->finish_output();
 
diff --git a/db/access.php b/db/access.php
index a5cac75b5a1..dfd8f59e61d 100644
--- a/db/access.php
+++ b/db/access.php
@@ -24,153 +24,153 @@
 
 defined('MOODLE_INTERNAL') || die();
 
-$capabilities = array(
-    'mod/attendance:view' => array(
+$capabilities = [
+    'mod/attendance:view' => [
         'captype' => 'read',
         'contextlevel' => CONTEXT_MODULE,
-        'archetypes' => array(
+        'archetypes' => [
             'student' => CAP_ALLOW,
             'teacher' => CAP_ALLOW,
             'editingteacher' => CAP_ALLOW,
-            'manager' => CAP_ALLOW
-        )
-    ),
+            'manager' => CAP_ALLOW,
+        ],
+    ],
 
-    'mod/attendance:addinstance' => array(
+    'mod/attendance:addinstance' => [
         'riskbitmask' => RISK_XSS,
         'captype' => 'write',
         'contextlevel' => CONTEXT_COURSE,
-        'archetypes' => array(
+        'archetypes' => [
             'editingteacher' => CAP_ALLOW,
-            'manager' => CAP_ALLOW
-        ),
-        'clonepermissionsfrom' => 'moodle/course:manageactivities'
-    ),
+            'manager' => CAP_ALLOW,
+        ],
+        'clonepermissionsfrom' => 'moodle/course:manageactivities',
+    ],
 
-    'mod/attendance:viewreports' => array(
+    'mod/attendance:viewreports' => [
         'riskbitmask' => RISK_PERSONAL,
         'captype' => 'read',
         'contextlevel' => CONTEXT_MODULE,
-        'archetypes' => array(
+        'archetypes' => [
             'teacher' => CAP_ALLOW,
             'editingteacher' => CAP_ALLOW,
-            'manager' => CAP_ALLOW
-        )
-    ),
+            'manager' => CAP_ALLOW,
+        ],
+    ],
 
-    'mod/attendance:takeattendances' => array(
+    'mod/attendance:takeattendances' => [
         'riskbitmask' => RISK_DATALOSS,
         'captype' => 'write',
         'contextlevel' => CONTEXT_MODULE,
-        'archetypes' => array(
+        'archetypes' => [
             'teacher' => CAP_ALLOW,
             'editingteacher' => CAP_ALLOW,
-            'manager' => CAP_ALLOW
-        )
-    ),
+            'manager' => CAP_ALLOW,
+        ],
+    ],
 
-    'mod/attendance:changeattendances' => array(
+    'mod/attendance:changeattendances' => [
         'riskbitmask' => RISK_DATALOSS,
         'captype' => 'write',
         'contextlevel' => CONTEXT_MODULE,
-        'archetypes' => array(
+        'archetypes' => [
             'teacher' => CAP_ALLOW,
             'editingteacher' => CAP_ALLOW,
-            'manager' => CAP_ALLOW
-        )
-    ),
+            'manager' => CAP_ALLOW,
+        ],
+    ],
 
-    'mod/attendance:manageattendances' => array(
+    'mod/attendance:manageattendances' => [
         'riskbitmask' => RISK_CONFIG,
         'captype' => 'write',
         'contextlevel' => CONTEXT_MODULE,
-        'archetypes' => array(
+        'archetypes' => [
             'editingteacher' => CAP_ALLOW,
-            'manager' => CAP_ALLOW
-        )
-    ),
+            'manager' => CAP_ALLOW,
+        ],
+    ],
 
-    'mod/attendance:changepreferences' => array(
+    'mod/attendance:changepreferences' => [
         'riskbitmask' => RISK_CONFIG,
         'captype' => 'write',
         'contextlevel' => CONTEXT_MODULE,
-        'archetypes' => array(
+        'archetypes' => [
             'editingteacher' => CAP_ALLOW,
-            'manager' => CAP_ALLOW
-        )
-    ),
+            'manager' => CAP_ALLOW,
+        ],
+    ],
 
-    'mod/attendance:import' => array(
+    'mod/attendance:import' => [
         'riskbitmask' => RISK_PERSONAL,
         'captype' => 'write',
         'contextlevel' => CONTEXT_MODULE,
-        'archetypes' => array(
+        'archetypes' => [
             'editingteacher' => CAP_ALLOW,
-            'manager' => CAP_ALLOW
-        )
-    ),
+            'manager' => CAP_ALLOW,
+        ],
+    ],
 
-    'mod/attendance:export' => array(
+    'mod/attendance:export' => [
         'riskbitmask' => RISK_PERSONAL,
         'captype' => 'read',
         'contextlevel' => CONTEXT_MODULE,
-        'archetypes' => array(
+        'archetypes' => [
             'editingteacher' => CAP_ALLOW,
-            'manager' => CAP_ALLOW
-        )
-    ),
+            'manager' => CAP_ALLOW,
+        ],
+    ],
 
 
-    'mod/attendance:canbelisted' => array(
+    'mod/attendance:canbelisted' => [
         'riskbitmask' => RISK_PERSONAL,
         'captype' => 'read',
         'contextlevel' => CONTEXT_MODULE,
-        'archetypes' => array(
-            'student' => CAP_ALLOW
-        )
-    ),
+        'archetypes' => [
+            'student' => CAP_ALLOW,
+        ],
+    ],
 
     // Allow teachers to manage temporary users.
-    'mod/attendance:managetemporaryusers' => array(
+    'mod/attendance:managetemporaryusers' => [
         'riskbitmask' => RISK_DATALOSS,
 
         'captype' => 'write',
         'contextlevel' => CONTEXT_MODULE,
-        'archetypes' => array(
+        'archetypes' => [
             'teacher' => CAP_ALLOW,
             'editingteacher' => CAP_ALLOW,
-            'manager' => CAP_ALLOW
-        )
-    ),
+            'manager' => CAP_ALLOW,
+        ],
+    ],
     // Allow access to site level reports.
-    'mod/attendance:viewsummaryreports' => array(
+    'mod/attendance:viewsummaryreports' => [
         'riskbitmask' => RISK_PERSONAL,
         'captype' => 'read',
         'contextlevel' => CONTEXT_COURSECAT,
-        'archetypes' => array(
-            'manager' => CAP_ALLOW
-        )
-    ),
+        'archetypes' => [
+            'manager' => CAP_ALLOW,
+        ],
+    ],
     // Users that can receive extra warning e-mails.
-    'mod/attendance:warningemails' => array(
+    'mod/attendance:warningemails' => [
         'riskbitmask' => RISK_DATALOSS,
 
         'captype' => 'write',
         'contextlevel' => CONTEXT_MODULE,
-        'archetypes' => array(
+        'archetypes' => [
             'teacher' => CAP_ALLOW,
             'editingteacher' => CAP_ALLOW,
-            'manager' => CAP_ALLOW
-        )
-    ),
-    'mod/attendance:manualautomark' => array(
+            'manager' => CAP_ALLOW,
+        ],
+    ],
+    'mod/attendance:manualautomark' => [
         'riskbitmask' => RISK_XSS,
         'captype' => 'write',
         'contextlevel' => CONTEXT_COURSE,
-        'archetypes' => array(
+        'archetypes' => [
             'editingteacher' => CAP_ALLOW,
-            'manager' => CAP_ALLOW
-        ),
-        'clonepermissionsfrom' => 'moodle/course:manageactivities'
-    ),
-);
+            'manager' => CAP_ALLOW,
+        ],
+        'clonepermissionsfrom' => 'moodle/course:manageactivities',
+    ],
+];
diff --git a/db/events.php b/db/events.php
index 6b877b34893..eb096e3c254 100644
--- a/db/events.php
+++ b/db/events.php
@@ -26,11 +26,11 @@
 defined('MOODLE_INTERNAL') || die();
 
 // List of observers.
-$observers = array(
+$observers = [
 
-    array(
+    [
         'eventname'   => '\core\event\course_content_deleted',
         'callback'    => 'mod_attendance_observer::course_content_deleted',
-    ),
+    ],
 
-);
+];
diff --git a/db/install.php b/db/install.php
index 6a9a1d65e6c..6b84727a31d 100644
--- a/db/install.php
+++ b/db/install.php
@@ -29,7 +29,7 @@ function xmldb_attendance_install() {
     global $DB;
 
     $result = true;
-    $arr = array('P' => 2, 'A' => 0, 'L' => 1, 'E' => 1);
+    $arr = ['P' => 2, 'A' => 0, 'L' => 1, 'E' => 1];
     foreach ($arr as $k => $v) {
         $rec = new stdClass;
         $rec->attendanceid = 0;
@@ -42,7 +42,7 @@ function xmldb_attendance_install() {
         $rec->grade = $v;
         $rec->visible = 1;
         $rec->deleted = 0;
-        if (!$DB->record_exists('attendance_statuses', array('attendanceid' => 0, 'acronym' => $rec->acronym))) {
+        if (!$DB->record_exists('attendance_statuses', ['attendanceid' => 0, 'acronym' => $rec->acronym])) {
             $result = $result && $DB->insert_record('attendance_statuses', $rec);
         }
     }
diff --git a/db/mobile.php b/db/mobile.php
index 14999744371..74136ef4ea7 100644
--- a/db/mobile.php
+++ b/db/mobile.php
@@ -36,9 +36,9 @@
                 'method' => 'mobile_view_activity',
                 'styles' => [
                     'url' => $CFG->wwwroot . '/mod/attendance/mobilestyles.css',
-                    'version' => 22
-                ]
-            ]
+                    'version' => 22,
+                ],
+            ],
         ],
         'lang' => [ // Language strings that are used in all the handlers.
             ['pluginname', 'attendance'],
@@ -64,7 +64,7 @@
             ['enterpassword', 'attendance'],
             ['incorrectpasswordshort', 'attendance'],
             ['attendancesuccess', 'attendance'],
-            ['setallstatuses', 'attendance']
+            ['setallstatuses', 'attendance'],
         ],
-    ]
+    ],
 ];
diff --git a/db/services.php b/db/services.php
index 4e0f0496b0b..cd5c1c4b99c 100644
--- a/db/services.php
+++ b/db/services.php
@@ -24,70 +24,70 @@
 
 defined('MOODLE_INTERNAL') || die();
 
-$functions = array(
-    'mod_attendance_add_attendance' => array(
+$functions = [
+    'mod_attendance_add_attendance' => [
         'classname'    => 'mod_attendance_external',
         'methodname'   => 'add_attendance',
         'classpath'    => 'mod/attendance/externallib.php',
         'description'  => 'Add attendance instance to course.',
         'type'         => 'write',
-    ),
-    'mod_attendance_remove_attendance' => array(
+    ],
+    'mod_attendance_remove_attendance' => [
         'classname'    => 'mod_attendance_external',
         'methodname'   => 'remove_attendance',
         'classpath'    => 'mod/attendance/externallib.php',
         'description'  => 'Delete attendance instance.',
         'type'         => 'write',
-    ),
-    'mod_attendance_add_session' => array(
+    ],
+    'mod_attendance_add_session' => [
         'classname'    => 'mod_attendance_external',
         'methodname'   => 'add_session',
         'classpath'    => 'mod/attendance/externallib.php',
         'description'  => 'Add a new session.',
         'type'         => 'write',
-    ),
-    'mod_attendance_remove_session' => array(
+    ],
+    'mod_attendance_remove_session' => [
         'classname'    => 'mod_attendance_external',
         'methodname'   => 'remove_session',
         'classpath'    => 'mod/attendance/externallib.php',
         'description'  => 'Delete a session.',
         'type'         => 'write',
-    ),
-    'mod_attendance_get_courses_with_today_sessions' => array(
+    ],
+    'mod_attendance_get_courses_with_today_sessions' => [
         'classname'   => 'mod_attendance_external',
         'methodname'  => 'get_courses_with_today_sessions',
         'classpath'   => 'mod/attendance/externallib.php',
         'description' => 'Method that retrieves courses with today sessions of a teacher.',
         'type'        => 'read',
-    ),
-    'mod_attendance_get_session' => array(
+    ],
+    'mod_attendance_get_session' => [
         'classname'   => 'mod_attendance_external',
         'methodname'  => 'get_session',
         'classpath'   => 'mod/attendance/externallib.php',
         'description' => 'Method that retrieves the session data',
         'type'        => 'read',
-    ),
-    'mod_attendance_update_user_status' => array(
+    ],
+    'mod_attendance_update_user_status' => [
         'classname'   => 'mod_attendance_external',
         'methodname'  => 'update_user_status',
         'classpath'   => 'mod/attendance/externallib.php',
         'description' => 'Method that updates the user status in a session.',
         'type'        => 'write',
-    ),
-    'mod_attendance_get_sessions' => array(
+    ],
+    'mod_attendance_get_sessions' => [
         'classname'   => 'mod_attendance_external',
         'methodname'  => 'get_sessions',
         'classpath'   => 'mod/attendance/externallib.php',
         'description' => 'Method that retrieves the sessions in an attendance instance.',
         'type'        => 'read',
-    )
-);
+    ],
+];
 
 
 // We define the services to install as pre-build services. A pre-build service is not editable by administrator.
-$services = array(
-    'Attendance' => array(
-        'functions' => array(
+$services = [
+    'Attendance' => [
+        'functions' => [
             'mod_attendance_add_attendance',
             'mod_attendance_remove_attendance',
             'mod_attendance_add_session',
@@ -95,10 +95,10 @@
             'mod_attendance_get_courses_with_today_sessions',
             'mod_attendance_get_session',
             'mod_attendance_update_user_status',
-            'mod_attendance_get_sessions'
-        ),
+            'mod_attendance_get_sessions',
+        ],
         'restrictedusers' => 0,
         'enabled' => 1,
-        'shortname' => 'mod_attendance'
-    )
-);
+        'shortname' => 'mod_attendance',
+    ],
+];
diff --git a/db/tasks.php b/db/tasks.php
index 23cfce8fd6a..0813b5a8c38 100644
--- a/db/tasks.php
+++ b/db/tasks.php
@@ -24,29 +24,29 @@
 
 defined('MOODLE_INTERNAL') || die();
 
-$tasks = array(
-    array(
+$tasks = [
+    [
         'classname' => 'mod_attendance\task\auto_mark',
         'blocking' => 0,
         'minute' => '8',
         'hour' => '*',
         'day' => '*',
         'dayofweek' => '*',
-        'month' => '*'),
-    array(
+        'month' => '*', ],
+    [
         'classname' => 'mod_attendance\task\notify',
         'blocking' => 0,
         'minute' => '30',
         'hour' => '1',
         'day' => '*',
         'dayofweek' => '*',
-        'month' => '*'),
-        array(
+        'month' => '*', ],
+        [
         'classname' => 'mod_attendance\task\clear_temporary_passwords',
         'blocking' => 0,
         'minute' => '0',
         'hour' => '1',
         'day' => '*',
         'dayofweek' => '*',
-        'month' => '*')
-);
+        'month' => '*', ],
+];
diff --git a/db/upgrade.php b/db/upgrade.php
index 592bf076304..733c687b02f 100755
--- a/db/upgrade.php
+++ b/db/upgrade.php
@@ -67,21 +67,21 @@ function xmldb_attendance_upgrade($oldversion=0) {
          * Only update the user's custom capabilities where modifierid is not zero.
          */
         $sql = $DB->sql_like('capability', '?').' AND modifierid <> 0';
-        $rs = $DB->get_recordset_select('role_capabilities', $sql, array('%mod/attforblock%'));
+        $rs = $DB->get_recordset_select('role_capabilities', $sql, ['%mod/attforblock%']);
         foreach ($rs as $cap) {
             $renamedcapability = str_replace('mod/attforblock', 'mod/attendance', $cap->capability);
-            $exists = $DB->record_exists('role_capabilities', array('roleid' => $cap->roleid, 'capability' => $renamedcapability));
+            $exists = $DB->record_exists('role_capabilities', ['roleid' => $cap->roleid, 'capability' => $renamedcapability]);
             if (!$exists) {
-                $DB->update_record('role_capabilities', array('id' => $cap->id, 'capability' => $renamedcapability));
+                $DB->update_record('role_capabilities', ['id' => $cap->id, 'capability' => $renamedcapability]);
             }
         }
 
         // Delete old role capabilities.
         $sql = $DB->sql_like('capability', '?');
-        $DB->delete_records_select('role_capabilities', $sql, array('%mod/attforblock%'));
+        $DB->delete_records_select('role_capabilities', $sql, ['%mod/attforblock%']);
 
         // Delete old capabilities.
-        $DB->delete_records_select('capabilities', 'component = ?', array('mod_attforblock'));
+        $DB->delete_records_select('capabilities', 'component = ?', ['mod_attforblock']);
 
         upgrade_mod_savepoint(true, 2014112001, 'attendance');
     }
@@ -99,7 +99,7 @@ function xmldb_attendance_upgrade($oldversion=0) {
         $table->add_field('created', XMLDB_TYPE_INTEGER, '10', null, null, null, null);
 
         // Adding keys to table attendance_tempusers.
-        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
+        $table->add_key('primary', XMLDB_KEY_PRIMARY, ['id']);
 
         // Conditionally launch create table for attendance_tempusers.
         if (!$dbman->table_exists($table)) {
@@ -107,13 +107,13 @@ function xmldb_attendance_upgrade($oldversion=0) {
         }
 
         // Conditionally launch add index courseid.
-        $index = new xmldb_index('courseid', XMLDB_INDEX_NOTUNIQUE, array('courseid'));
+        $index = new xmldb_index('courseid', XMLDB_INDEX_NOTUNIQUE, ['courseid']);
         if (!$dbman->index_exists($table, $index)) {
             $dbman->add_index($table, $index);
         }
 
         // Conditionally launch add index studentid.
-        $index = new xmldb_index('studentid', XMLDB_INDEX_UNIQUE, array('studentid'));
+        $index = new xmldb_index('studentid', XMLDB_INDEX_UNIQUE, ['studentid']);
         if (!$dbman->index_exists($table, $index)) {
             $dbman->add_index($table, $index);
         }
@@ -274,7 +274,7 @@ function xmldb_attendance_upgrade($oldversion=0) {
         foreach ($attendances as $attendance) {
             if (!empty($attendance->subnet)) {
                 // Get all sessions for this attendance.
-                $sessions = $DB->get_recordset('attendance_sessions', array('attendanceid' => $attendance->id));
+                $sessions = $DB->get_recordset('attendance_sessions', ['attendanceid' => $attendance->id]);
                 foreach ($sessions as $session) {
                     $session->subnet = $attendance->subnet;
                     $DB->update_record('attendance_sessions', $session);
@@ -351,10 +351,10 @@ function xmldb_attendance_upgrade($oldversion=0) {
         $table->add_field('timesent', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
 
         // Adding keys to table attendance_warning_done.
-        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
+        $table->add_key('primary', XMLDB_KEY_PRIMARY, ['id']);
 
         // Adding indexes to table attendance_warning_done.
-        $table->add_index('notifyid_userid', XMLDB_INDEX_UNIQUE, array('notifyid', 'userid'));
+        $table->add_index('notifyid_userid', XMLDB_INDEX_UNIQUE, ['notifyid', 'userid']);
 
         // Conditionally launch create table for attendance_warning_done.
         if (!$dbman->table_exists($table)) {
@@ -383,8 +383,8 @@ function xmldb_attendance_upgrade($oldversion=0) {
             $table->add_field('thirdpartyemails', XMLDB_TYPE_TEXT, null, null, null, null, null);
 
             // Adding keys to table attendance_warning.
-            $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
-            $table->add_key('level_id', XMLDB_KEY_UNIQUE, array('idnumber', 'warningpercent', 'warnafter'));
+            $table->add_key('primary', XMLDB_KEY_PRIMARY, ['id']);
+            $table->add_key('level_id', XMLDB_KEY_UNIQUE, ['idnumber', 'warningpercent', 'warnafter']);
 
             // Conditionally launch create table for attendance_warning.
             $dbman->create_table($table);
@@ -399,7 +399,7 @@ function xmldb_attendance_upgrade($oldversion=0) {
                     $DB->execute("DROP INDEX ". $name);
                 }
             }
-            $index = new xmldb_key('level_id', XMLDB_KEY_UNIQUE, array('idnumber', 'warningpercent', 'warnafter'));
+            $index = new xmldb_key('level_id', XMLDB_KEY_UNIQUE, ['idnumber', 'warningpercent', 'warnafter']);
             $dbman->add_key($table, $index);
         }
         // Attendance savepoint reached.
@@ -423,12 +423,12 @@ function xmldb_attendance_upgrade($oldversion=0) {
         // Define field setunmarked to be added to attendance_statuses.
         $table = new xmldb_table('attendance_warning_done');
 
-        $index = new xmldb_index('notifyid_userid', XMLDB_INDEX_UNIQUE, array('notifyid', 'userid'));
+        $index = new xmldb_index('notifyid_userid', XMLDB_INDEX_UNIQUE, ['notifyid', 'userid']);
         if ($dbman->index_exists($table, $index)) {
             $dbman->drop_index($table, $index);
         }
 
-        $index = new xmldb_index('notifyid', XMLDB_INDEX_NOTUNIQUE, array('notifyid', 'userid'));
+        $index = new xmldb_index('notifyid', XMLDB_INDEX_NOTUNIQUE, ['notifyid', 'userid']);
         $dbman->add_index($table, $index);
 
         // Attendance savepoint reached.
@@ -630,7 +630,7 @@ function xmldb_attendance_upgrade($oldversion=0) {
         $table = new xmldb_table('attendance_sessions');
 
         // Conditionally launch add index caleventid.
-        $index = new xmldb_index('caleventid', XMLDB_INDEX_NOTUNIQUE, array('caleventid'));
+        $index = new xmldb_index('caleventid', XMLDB_INDEX_NOTUNIQUE, ['caleventid']);
         if (!$dbman->index_exists($table, $index)) {
             $dbman->add_index($table, $index);
         }
diff --git a/db/upgradelib.php b/db/upgradelib.php
index dc531b857c0..f9fdaa38d19 100644
--- a/db/upgradelib.php
+++ b/db/upgradelib.php
@@ -30,7 +30,7 @@ function attendance_upgrade_create_calendar_events() {
 
     $attendances = $DB->get_records('attendance', null, null, 'id, name, course');
     foreach ($attendances as $att) {
-        $sessionsdata = $DB->get_records('attendance_sessions', array('attendanceid' => $att->id), null,
+        $sessionsdata = $DB->get_records('attendance_sessions', ['attendanceid' => $att->id], null,
             'id, groupid, sessdate, duration, description, descriptionformat');
         foreach ($sessionsdata as $session) {
             $calevent = new stdClass();
@@ -47,7 +47,7 @@ function attendance_upgrade_create_calendar_events() {
             $calevent->format         = $session->descriptionformat;
 
             $caleventid = $DB->insert_record('event', $calevent);
-            $DB->set_field('attendance_sessions', 'caleventid', $caleventid, array('id' => $session->id));
+            $DB->set_field('attendance_sessions', 'caleventid', $caleventid, ['id' => $session->id]);
         }
     }
 }
diff --git a/defaultstatus.php b/defaultstatus.php
index 714d79227d4..299bccdea4a 100644
--- a/defaultstatus.php
+++ b/defaultstatus.php
@@ -31,7 +31,7 @@
 $action         = optional_param('action', null, PARAM_INT);
 $statusid       = optional_param('statusid', null, PARAM_INT);
 admin_externalpage_setup('managemodules');
-$url = new moodle_url('/mod/attendance/defaultstatus.php', array('statusid' => $statusid, 'action' => $action));
+$url = new moodle_url('/mod/attendance/defaultstatus.php', ['statusid' => $statusid, 'action' => $action]);
 
 // Check sesskey if we are performing an action.
 if (!empty($action)) {
@@ -45,7 +45,7 @@
 echo $tabmenu;
 
 // TODO: Would be good to combine this code block with the one in preferences to avoid duplication.
-$errors = array();
+$errors = [];
 switch ($action) {
     case mod_attendance_preferences_page_params::ACTION_ADD:
         $newacronym         = optional_param('newacronym', null, PARAM_TEXT);
diff --git a/export.php b/export.php
index 1c00da10f56..66def2af10e 100644
--- a/export.php
+++ b/export.php
@@ -32,8 +32,8 @@
 $id             = required_param('id', PARAM_INT);
 
 $cm             = get_coursemodule_from_id('attendance', $id, 0, false, MUST_EXIST);
-$course         = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
-$att            = $DB->get_record('attendance', array('id' => $cm->instance), '*', MUST_EXIST);
+$course         = $DB->get_record('course', ['id' => $cm->course], '*', MUST_EXIST);
+$att            = $DB->get_record('attendance', ['id' => $cm->instance], '*', MUST_EXIST);
 
 require_login($course, true, $cm);
 
@@ -49,7 +49,7 @@
 $PAGE->set_cacheable(true);
 $PAGE->navbar->add(get_string('export', 'attendance'));
 
-$formparams = array('course' => $course, 'cm' => $cm, 'modcontext' => $context);
+$formparams = ['course' => $course, 'cm' => $cm, 'modcontext' => $context];
 $mform = new mod_attendance\form\export($att->url_export(), $formparams);
 
 if ($formdata = $mform->get_data()) {
@@ -87,7 +87,7 @@
 
         $group = $formdata->group ? $reportdata->groups[$formdata->group] : 0;
         $data = new stdClass;
-        $data->tabhead = array();
+        $data->tabhead = [];
         $data->course = $att->course->fullname;
         $data->group = $group ? $group->name : get_string('allparticipants');
 
@@ -107,7 +107,7 @@
                 } else if (in_array($opt, array_column($customfields, 'shortname'))) {
                     foreach ($customfields as $customfield) {
                         if ($opt == $customfield->shortname) {
-                            $data->tabhead[] = format_string($customfield->name, true, array('context' => $context));
+                            $data->tabhead[] = format_string($customfield->name, true, ['context' => $context]);
                         }
                     }
                 } else {
@@ -151,7 +151,7 @@
         $data->tabhead[] = get_string('percentage', 'attendance');
 
         $i = 0;
-        $data->table = array();
+        $data->table = [];
         foreach ($reportdata->users as $user) {
             profile_load_custom_fields($user);
 
@@ -160,7 +160,7 @@
             if (!empty($groupmode)) {
                 $grouptext = '';
                 $groupsraw = groups_get_all_groups($course->id, $user->id, 0, 'g.name');
-                $groups = array();
+                $groups = [];
                 foreach ($groupsraw as $group) {
                     $groups[] = $group->name;;
                 }
@@ -171,7 +171,7 @@
                 foreach (array_keys($formdata->ident) as $opt) {
                     if (in_array($opt, array_column($customfields, 'shortname'))) {
                         if (isset($user->profile[$opt])) {
-                            $data->table[$i][] = format_string($user->profile[$opt], true, array('context' => $context));
+                            $data->table[$i][] = format_string($user->profile[$opt], true, ['context' => $context]);
                         } else {
                             $data->table[$i][] = '';
                         }
diff --git a/externallib.php b/externallib.php
index 7da17a0a20f..a332c5f6607 100644
--- a/externallib.php
+++ b/externallib.php
@@ -41,13 +41,13 @@ class mod_attendance_external extends external_api {
      */
     public static function add_attendance_parameters() {
         return new external_function_parameters(
-            array(
+            [
                 'courseid' => new external_value(PARAM_INT, 'course id'),
                 'name' => new external_value(PARAM_TEXT, 'attendance name'),
                 'intro' => new external_value(PARAM_RAW, 'attendance description', VALUE_DEFAULT, ''),
                 'groupmode' => new external_value(PARAM_INT,
                     'group mode (0 - no groups, 1 - separate groups, 2 - visible groups)', VALUE_DEFAULT, 0),
-            )
+            ]
         );
     }
 
@@ -64,15 +64,15 @@ public static function add_attendance(int $courseid, $name, $intro, int $groupmo
         global $CFG, $DB;
         require_once($CFG->dirroot.'/course/modlib.php');
 
-        $params = self::validate_parameters(self::add_attendance_parameters(), array(
+        $params = self::validate_parameters(self::add_attendance_parameters(), [
             'courseid' => $courseid,
             'name' => $name,
             'intro' => $intro,
             'groupmode' => $groupmode,
-        ));
+        ]);
 
         // Get course.
-        $course = $DB->get_record('course', array('id' => $params['courseid']), '*', MUST_EXIST);
+        $course = $DB->get_record('course', ['id' => $params['courseid']], '*', MUST_EXIST);
 
         // Verify permissions.
         list($module, $context) = can_add_moduleinfo($course, 'attendance', 0);
@@ -80,7 +80,7 @@ public static function add_attendance(int $courseid, $name, $intro, int $groupmo
         require_capability('mod/attendance:addinstance', $context);
 
         // Verify group mode.
-        if (!in_array($params['groupmode'], array(NOGROUPS, SEPARATEGROUPS, VISIBLEGROUPS))) {
+        if (!in_array($params['groupmode'], [NOGROUPS, SEPARATEGROUPS, VISIBLEGROUPS])) {
             throw new invalid_parameter_exception('Group mode is invalid.');
         }
 
@@ -103,7 +103,7 @@ public static function add_attendance(int $courseid, $name, $intro, int $groupmo
         // Add the module to the course.
         $moduleinfo = add_moduleinfo($moduleinfo, $course);
 
-        return array('attendanceid' => $moduleinfo->instance);
+        return ['attendanceid' => $moduleinfo->instance];
     }
 
     /**
@@ -112,9 +112,9 @@ public static function add_attendance(int $courseid, $name, $intro, int $groupmo
      * @return external_multiple_structure
      */
     public static function add_attendance_returns() {
-        return new external_single_structure(array(
+        return new external_single_structure([
             'attendanceid' => new external_value(PARAM_INT, 'instance id of the created attendance'),
-        ));
+        ]);
     }
 
     /**
@@ -124,9 +124,9 @@ public static function add_attendance_returns() {
      */
     public static function remove_attendance_parameters() {
         return new external_function_parameters(
-            array(
+            [
                 'attendanceid' => new external_value(PARAM_INT, 'attendance instance id'),
-            )
+            ]
         );
     }
 
@@ -136,9 +136,9 @@ public static function remove_attendance_parameters() {
      * @param int $attendanceid
      */
     public static function remove_attendance(int $attendanceid) {
-        $params = self::validate_parameters(self::remove_attendance_parameters(), array(
+        $params = self::validate_parameters(self::remove_attendance_parameters(), [
             'attendanceid' => $attendanceid,
-        ));
+        ]);
 
         $cm = get_coursemodule_from_instance('attendance', $params['attendanceid'], 0, false, MUST_EXIST);
 
@@ -169,14 +169,14 @@ public static function remove_attendance_returns() {
      */
     public static function add_session_parameters() {
         return new external_function_parameters(
-            array(
+            [
                 'attendanceid' => new external_value(PARAM_INT, 'attendance instance id'),
                 'description' => new external_value(PARAM_RAW, 'description', VALUE_DEFAULT, ''),
                 'sessiontime' => new external_value(PARAM_INT, 'session start timestamp'),
                 'duration' => new external_value(PARAM_INT, 'session duration (seconds)', VALUE_DEFAULT, 0),
                 'groupid' => new external_value(PARAM_INT, 'group id', VALUE_DEFAULT, 0),
                 'addcalendarevent' => new external_value(PARAM_BOOL, 'add calendar event', VALUE_DEFAULT, true),
-            )
+            ]
         );
     }
 
@@ -195,18 +195,18 @@ public static function add_session(int $attendanceid, $description, int $session
                                        bool $addcalendarevent) {
         global $USER, $DB;
 
-        $params = self::validate_parameters(self::add_session_parameters(), array(
+        $params = self::validate_parameters(self::add_session_parameters(), [
             'attendanceid' => $attendanceid,
             'description' => $description,
             'sessiontime' => $sessiontime,
             'duration' => $duration,
             'groupid' => $groupid,
             'addcalendarevent' => $addcalendarevent,
-        ));
+        ]);
 
         $cm = get_coursemodule_from_instance('attendance', $params['attendanceid'], 0, false, MUST_EXIST);
-        $course = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
-        $attendance = $DB->get_record('attendance', array('id' => $cm->instance), '*', MUST_EXIST);
+        $course = $DB->get_record('course', ['id' => $cm->course], '*', MUST_EXIST);
+        $attendance = $DB->get_record('attendance', ['id' => $cm->instance], '*', MUST_EXIST);
 
         // Check permissions.
         $context = context_module::instance($cm->id);
@@ -260,7 +260,7 @@ public static function add_session(int $attendanceid, $description, int $session
         $sess->studentsearlyopentime = get_config('attendance', 'studentsearlyopentime');
 
         $sessionid = $attendance->add_session($sess);
-        return array('sessionid' => $sessionid);
+        return ['sessionid' => $sessionid];
     }
 
     /**
@@ -269,9 +269,9 @@ public static function add_session(int $attendanceid, $description, int $session
      * @return external_multiple_structure
      */
     public static function add_session_returns() {
-        return new external_single_structure(array(
+        return new external_single_structure([
             'sessionid' => new external_value(PARAM_INT, 'id of the created session'),
-        ));
+        ]);
     }
 
     /**
@@ -281,9 +281,9 @@ public static function add_session_returns() {
      */
     public static function remove_session_parameters() {
         return new external_function_parameters(
-            array(
+            [
                 'sessionid' => new external_value(PARAM_INT, 'session id'),
-            )
+            ]
         );
     }
 
@@ -297,12 +297,12 @@ public static function remove_session(int $sessionid) {
         global $DB;
 
         $params = self::validate_parameters(self::remove_session_parameters(),
-            array('sessionid' => $sessionid));
+            ['sessionid' => $sessionid]);
 
-        $session = $DB->get_record('attendance_sessions', array('id' => $params['sessionid']), '*', MUST_EXIST);
-        $attendance = $DB->get_record('attendance', array('id' => $session->attendanceid), '*', MUST_EXIST);
+        $session = $DB->get_record('attendance_sessions', ['id' => $params['sessionid']], '*', MUST_EXIST);
+        $attendance = $DB->get_record('attendance', ['id' => $session->attendanceid], '*', MUST_EXIST);
         $cm = get_coursemodule_from_instance('attendance', $attendance->id, 0, false, MUST_EXIST);
-        $course = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
+        $course = $DB->get_record('course', ['id' => $cm->course], '*', MUST_EXIST);
 
         // Check permissions.
         $context = context_module::instance($cm->id);
@@ -313,7 +313,7 @@ public static function remove_session(int $sessionid) {
         $attendance = new mod_attendance_structure($attendance, $cm, $course, $context);
 
         // Delete session.
-        $attendance->delete_sessions(array($sessionid));
+        $attendance->delete_sessions([$sessionid]);
         attendance_update_users_grade($attendance);
 
         return true;
@@ -334,7 +334,7 @@ public static function remove_session_returns() {
      */
     public static function get_courses_with_today_sessions_parameters() {
         return new external_function_parameters (
-                    array('userid' => new external_value(PARAM_INT, 'User id.',  VALUE_DEFAULT, 0)));
+                    ['userid' => new external_value(PARAM_INT, 'User id.',  VALUE_DEFAULT, 0)]);
     }
 
     /**
@@ -345,12 +345,12 @@ public static function get_courses_with_today_sessions_parameters() {
     public static function get_courses_with_today_sessions($userid) {
         global $DB;
 
-        $params = self::validate_parameters(self::get_courses_with_today_sessions_parameters(), array(
+        $params = self::validate_parameters(self::get_courses_with_today_sessions_parameters(), [
             'userid' => $userid,
-        ));
+        ]);
 
         // Check user id is valid.
-        $user = $DB->get_record('user', array('id' => $params['userid']), '*', MUST_EXIST);
+        $user = $DB->get_record('user', ['id' => $params['userid']], '*', MUST_EXIST);
 
         // Capability check is done in get_courses_with_today_sessions
         // as it switches contexts in loop for each course.
@@ -363,7 +363,7 @@ public static function get_courses_with_today_sessions($userid) {
      * @return array
      */
     private static function get_session_structure() {
-        $session = array('id' => new external_value(PARAM_INT, 'Session id.'),
+        $session = ['id' => new external_value(PARAM_INT, 'Session id.'),
                          'attendanceid' => new external_value(PARAM_INT, 'Attendance id.'),
                          'groupid' => new external_value(PARAM_INT, 'Group id.'),
                          'sessdate' => new external_value(PARAM_INT, 'Session date.'),
@@ -380,7 +380,7 @@ private static function get_session_structure() {
                          'preventsharediptime' => new external_value(PARAM_INT, 'Time delay before IP address is allowed again.'),
                          'statusset' => new external_value(PARAM_INT, 'Session statusset.'),
                          'includeqrcode' => new external_value(PARAM_INT, 'Include QR code when displaying password'),
-                         'studentsearlyopentime' => new external_value(PARAM_INT, 'Duration to allow session to opened early'));
+                         'studentsearlyopentime' => new external_value(PARAM_INT, 'Duration to allow session to opened early'), ];
 
         return $session;
     }
@@ -392,14 +392,14 @@ private static function get_session_structure() {
     public static function get_courses_with_today_sessions_returns() {
         $todaysessions = self::get_session_structure();
 
-        $attendanceinstances = array('name' => new external_value(PARAM_TEXT, 'Attendance name.'),
+        $attendanceinstances = ['name' => new external_value(PARAM_TEXT, 'Attendance name.'),
                                       'today_sessions' => new external_multiple_structure(
-                                                          new external_single_structure($todaysessions)));
+                                                          new external_single_structure($todaysessions)), ];
 
-        $courses = array('shortname' => new external_value(PARAM_TEXT, 'short name of a moodle course.'),
+        $courses = ['shortname' => new external_value(PARAM_TEXT, 'short name of a moodle course.'),
                          'fullname' => new external_value(PARAM_TEXT, 'full name of a moodle course.'),
                          'attendance_instances' => new external_multiple_structure(
-                                                   new external_single_structure($attendanceinstances)));
+                                                   new external_single_structure($attendanceinstances)), ];
 
         return new external_multiple_structure(new external_single_structure(($courses)));
     }
@@ -411,7 +411,7 @@ public static function get_courses_with_today_sessions_returns() {
      */
     public static function get_session_parameters() {
         return new external_function_parameters (
-                    array('sessionid' => new external_value(PARAM_INT, 'session id')));
+                    ['sessionid' => new external_value(PARAM_INT, 'session id')]);
     }
 
     /**
@@ -423,22 +423,22 @@ public static function get_session_parameters() {
     public static function get_session($sessionid) {
         global $DB;
 
-        $params = self::validate_parameters(self::get_session_parameters(), array(
+        $params = self::validate_parameters(self::get_session_parameters(), [
             'sessionid' => $sessionid,
-        ));
+        ]);
 
-        $session = $DB->get_record('attendance_sessions', array('id' => $params['sessionid']), '*', MUST_EXIST);
-        $attendance = $DB->get_record('attendance', array('id' => $session->attendanceid), '*', MUST_EXIST);
+        $session = $DB->get_record('attendance_sessions', ['id' => $params['sessionid']], '*', MUST_EXIST);
+        $attendance = $DB->get_record('attendance', ['id' => $session->attendanceid], '*', MUST_EXIST);
         $cm = get_coursemodule_from_instance('attendance', $attendance->id, 0, false, MUST_EXIST);
 
         // Check permissions.
         $context = context_module::instance($cm->id);
         self::validate_context($context);
-        $capabilities = array(
+        $capabilities = [
             'mod/attendance:manageattendances',
             'mod/attendance:takeattendances',
-            'mod/attendance:changeattendances'
-        );
+            'mod/attendance:changeattendances',
+        ];
         if (!has_any_capability($capabilities, $context)) {
             throw new invalid_parameter_exception('Invalid session id or no permissions.');
         }
@@ -452,23 +452,23 @@ public static function get_session($sessionid) {
      * @return external_single_structure
      */
     public static function get_session_returns() {
-        $statuses = array('id' => new external_value(PARAM_INT, 'Status id.'),
+        $statuses = ['id' => new external_value(PARAM_INT, 'Status id.'),
                           'attendanceid' => new external_value(PARAM_INT, 'Attendance id.'),
                           'acronym' => new external_value(PARAM_TEXT, 'Status acronym.'),
                           'description' => new external_value(PARAM_RAW, 'Status description.'),
                           'grade' => new external_value(PARAM_FLOAT, 'Status grade.'),
                           'visible' => new external_value(PARAM_INT, 'Status visibility.'),
                           'deleted' => new external_value(PARAM_INT, 'informs if this session was deleted.'),
-                          'setnumber' => new external_value(PARAM_INT, 'Set number.'));
+                          'setnumber' => new external_value(PARAM_INT, 'Set number.'), ];
 
-        $users = array('id' => new external_value(PARAM_INT, 'User id.'),
+        $users = ['id' => new external_value(PARAM_INT, 'User id.'),
                        'firstname' => new external_value(PARAM_TEXT, 'User first name.'),
-                       'lastname' => new external_value(PARAM_TEXT, 'User last name.'));
+                       'lastname' => new external_value(PARAM_TEXT, 'User last name.'), ];
 
-        $attendancelog = array('studentid' => new external_value(PARAM_INT, 'Student id.'),
+        $attendancelog = ['studentid' => new external_value(PARAM_INT, 'Student id.'),
                                 'statusid' => new external_value(PARAM_TEXT, 'Status id (last time).'),
                                 'remarks' => new external_value(PARAM_TEXT, 'Last remark.'),
-                                'id' => new external_value(PARAM_TEXT, 'log id.'));
+                                'id' => new external_value(PARAM_TEXT, 'log id.'), ];
 
         $session = self::get_session_structure();
         $session['courseid'] = new external_value(PARAM_INT, 'Course moodle id.');
@@ -486,11 +486,11 @@ public static function get_session_returns() {
      */
     public static function update_user_status_parameters() {
         return new external_function_parameters(
-                    array('sessionid' => new external_value(PARAM_INT, 'Session id'),
+                    ['sessionid' => new external_value(PARAM_INT, 'Session id'),
                           'studentid' => new external_value(PARAM_INT, 'Student id'),
                           'takenbyid' => new external_value(PARAM_INT, 'Id of the user who took this session'),
                           'statusid' => new external_value(PARAM_INT, 'Status id'),
-                          'statusset' => new external_value(PARAM_TEXT, 'Status set of session')));
+                          'statusset' => new external_value(PARAM_TEXT, 'Status set of session')]);
     }
 
     /**
@@ -505,15 +505,15 @@ public static function update_user_status_parameters() {
     public static function update_user_status($sessionid, $studentid, $takenbyid, $statusid, $statusset) {
         global $DB;
 
-        $params = self::validate_parameters(self::update_user_status_parameters(), array(
+        $params = self::validate_parameters(self::update_user_status_parameters(), [
             'sessionid' => $sessionid,
             'studentid' => $studentid,
             'takenbyid' => $takenbyid,
             'statusid' => $statusid,
             'statusset' => $statusset,
-        ));
+        ]);
 
-        $session = $DB->get_record('attendance_sessions', array('id' => $params['sessionid']), '*', MUST_EXIST);
+        $session = $DB->get_record('attendance_sessions', ['id' => $params['sessionid']], '*', MUST_EXIST);
         $cm = get_coursemodule_from_instance('attendance', $session->attendanceid, 0, false, MUST_EXIST);
 
         // Check permissions.
@@ -530,8 +530,8 @@ public static function update_user_status($sessionid, $studentid, $takenbyid, $s
         }
 
         // Check user id is valid.
-        $student = $DB->get_record('user', array('id' => $params['studentid']), '*', MUST_EXIST);
-        $takenby = $DB->get_record('user', array('id' => $params['takenbyid']), '*', MUST_EXIST);
+        $student = $DB->get_record('user', ['id' => $params['studentid']], '*', MUST_EXIST);
+        $takenby = $DB->get_record('user', ['id' => $params['takenbyid']], '*', MUST_EXIST);
 
         // TODO: Verify statusset and statusid.
 
@@ -554,9 +554,9 @@ public static function update_user_status_returns() {
      */
     public static function get_sessions_parameters() {
         return new external_function_parameters(
-                    array(
+                    [
                         'attendanceid' => new external_value(PARAM_INT, 'Attendance id.', VALUE_REQUIRED),
-                    )
+                    ]
                 );
     }
 
@@ -575,20 +575,20 @@ public static function get_sessions_returns() {
      * @param int $attendanceid
      */
     public static function get_sessions($attendanceid) {
-         $params = self::validate_parameters(self::get_sessions_parameters(), array(
+         $params = self::validate_parameters(self::get_sessions_parameters(), [
             'attendanceid' => $attendanceid,
-         ));
+         ]);
 
         // Check permissions.
         $cm = get_coursemodule_from_instance('attendance', $attendanceid, 0, false, MUST_EXIST);
         $context = context_module::instance($cm->id);
         self::validate_context($context);
 
-        $capabilities = array(
+        $capabilities = [
             'mod/attendance:manageattendances',
             'mod/attendance:takeattendances',
-            'mod/attendance:changeattendances'
-        );
+            'mod/attendance:changeattendances',
+        ];
         if (!has_any_capability($capabilities, $context)) {
             throw new invalid_parameter_exception('Invalid session id or no permissions.');
         }
diff --git a/import.php b/import.php
index 0e69e348c4a..f81f5031db3 100644
--- a/import.php
+++ b/import.php
@@ -33,8 +33,8 @@
 
 $id = required_param('id', PARAM_INT);
 $cm = get_coursemodule_from_id('attendance', $id, 0, false, MUST_EXIST);
-$course = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
-$att = $DB->get_record('attendance', array('id' => $cm->instance), '*', MUST_EXIST);
+$course = $DB->get_record('course', ['id' => $cm->course], '*', MUST_EXIST);
+$att = $DB->get_record('attendance', ['id' => $cm->instance], '*', MUST_EXIST);
 
 require_login($course, true, $cm);
 
@@ -50,7 +50,7 @@
 $PAGE->set_cacheable(true);
 $PAGE->navbar->add(get_string('import', 'attendance'));
 
-$formparams = array('course' => $course, 'cm' => $cm, 'modcontext' => $context);
+$formparams = ['course' => $course, 'cm' => $cm, 'modcontext' => $context];
 
 $form = null;
 if (optional_param('confirm', 0, PARAM_BOOL)) {
diff --git a/import/marksessions.php b/import/marksessions.php
index d0963370d13..37a4951810c 100644
--- a/import/marksessions.php
+++ b/import/marksessions.php
@@ -38,11 +38,11 @@
 $importid               = optional_param('importid', null, PARAM_INT);
 
 $cm                     = get_coursemodule_from_id('attendance', $id, 0, false, MUST_EXIST);
-$course                 = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
-$att                    = $DB->get_record('attendance', array('id' => $cm->instance), '*', MUST_EXIST);
+$course                 = $DB->get_record('course', ['id' => $cm->course], '*', MUST_EXIST);
+$att                    = $DB->get_record('attendance', ['id' => $cm->instance], '*', MUST_EXIST);
 
 // Check this is a valid session for this attendance.
-$session                = $DB->get_record('attendance_sessions', array('id' => $pageparams->sessionid, 'attendanceid' => $att->id),
+$session                = $DB->get_record('attendance_sessions', ['id' => $pageparams->sessionid, 'attendanceid' => $att->id],
                                   '*', MUST_EXIST);
 
 require_login($course, true, $cm);
@@ -66,7 +66,7 @@
 
 $formparams = ['id' => $cm->id,
                'sessionid' => $pageparams->sessionid,
-               'grouptype' => $pageparams->grouptype];
+               'grouptype' => $pageparams->grouptype, ];
 $form = null;
 if (optional_param('needsconfirm', 0, PARAM_BOOL)) {
     $form = new \mod_attendance\form\import\marksessions($url->out(false), $formparams);
@@ -80,9 +80,9 @@
 
 if ($form->is_cancelled()) {
     redirect(new moodle_url('/mod/attendance/take.php',
-             array('id' => $cm->id,
+             ['id' => $cm->id,
              'sessionid' => $pageparams->sessionid,
-             'grouptype' => $pageparams->grouptype)));
+             'grouptype' => $pageparams->grouptype, ]));
     return;
 } else if ($data = $form->get_data()) {
     if ($data->confirm) {
@@ -96,7 +96,7 @@
             echo $output->header();
             $sessions = $importer->import();
             mod_attendance_notifyqueue::show();
-            $url = new moodle_url('/mod/attendance/manage.php', array('id' => $att->cmid));
+            $url = new moodle_url('/mod/attendance/manage.php', ['id' => $att->cmid]);
             echo $output->continue_button($url);
             echo $output->footer();
             die();
diff --git a/index.php b/index.php
index 4a45ad769d6..a1f2d30609a 100644
--- a/index.php
+++ b/index.php
@@ -26,10 +26,10 @@
 
 $id = required_param('id', PARAM_INT);
 
-$course = $DB->get_record('course', array('id' => $id), '*', MUST_EXIST);
+$course = $DB->get_record('course', ['id' => $id], '*', MUST_EXIST);
 require_login($course);
 
-$PAGE->set_url('/mod/attendance/index.php', array('id' => $id));
+$PAGE->set_url('/mod/attendance/index.php', ['id' => $id]);
 $PAGE->set_pagelayout('incourse');
 
 \mod_attendance\event\course_module_instance_list_viewed::create_from_course($course)->trigger();
@@ -47,7 +47,7 @@
 require_capability('mod/attendance:view', $context);
 
 if (! $atts = get_all_instances_in_course("attendance", $course)) {
-    $url = new moodle_url('/course/view.php', array('id' => $course->id));
+    $url = new moodle_url('/course/view.php', ['id' => $course->id]);
     notice(get_string('thereareno', 'moodle', $strplural), $url);
     die;
 }
@@ -63,24 +63,24 @@
 
 if ($usesections) {
     $strsectionname = get_string('sectionname', 'format_'.$course->format);
-    $table->head  = array ($strsectionname, $strname);
-    $table->align = array ("center", "left");
+    $table->head  =  [$strsectionname, $strname];
+    $table->align =  ["center", "left"];
 } else {
-    $table->head  = array ($strname);
-    $table->align = array ("left");
+    $table->head  =  [$strname];
+    $table->align =  ["left"];
 }
 
 foreach ($atts as $att) {
     // Get the responses of each attendance.
-    $viewurl = new moodle_url('/mod/attendance/view.php', array('id' => $att->coursemodule));
+    $viewurl = new moodle_url('/mod/attendance/view.php', ['id' => $att->coursemodule]);
 
     $dimmedclass = $att->visible ? '' : 'class="dimmed"';
     $link = '<a '.$dimmedclass.' href="'.$viewurl->out().'">'.$att->name.'</a>';
 
     if ($usesections) {
-        $tabledata = array (get_section_name($course, $att->section), $link);
+        $tabledata =  [get_section_name($course, $att->section), $link];
     } else {
-        $tabledata = array ($link);
+        $tabledata =  [$link];
     }
 
     $table->data[] = $tabledata;
diff --git a/lib.php b/lib.php
index a040cd89ed7..b33c22e7c58 100644
--- a/lib.php
+++ b/lib.php
@@ -64,7 +64,7 @@ function attendance_supports($feature) {
 function att_add_default_statuses($attid) {
     global $DB;
 
-    $statuses = $DB->get_recordset('attendance_statuses', array('attendanceid' => 0), 'id');
+    $statuses = $DB->get_recordset('attendance_statuses', ['attendanceid' => 0], 'id');
     foreach ($statuses as $st) {
         $rec = $st;
         $rec->attendanceid = $attid;
@@ -83,7 +83,7 @@ function attendance_add_default_warnings($id) {
     require_once($CFG->dirroot.'/mod/attendance/locallib.php');
 
     $warnings = $DB->get_recordset('attendance_warning',
-        array('idnumber' => 0), 'id');
+        ['idnumber' => 0], 'id');
     foreach ($warnings as $n) {
         $rec = $n;
         $rec->idnumber = $id;
@@ -151,22 +151,22 @@ function attendance_delete_instance($id) {
     global $DB, $CFG;
     require_once($CFG->dirroot.'/mod/attendance/locallib.php');
 
-    if (! $attendance = $DB->get_record('attendance', array('id' => $id))) {
+    if (! $attendance = $DB->get_record('attendance', ['id' => $id])) {
         return false;
     }
 
-    if ($sessids = array_keys($DB->get_records('attendance_sessions', array('attendanceid' => $id), '', 'id'))) {
+    if ($sessids = array_keys($DB->get_records('attendance_sessions', ['attendanceid' => $id], '', 'id'))) {
         if (attendance_existing_calendar_events_ids($sessids)) {
             attendance_delete_calendar_events($sessids);
         }
         $DB->delete_records_list('attendance_log', 'sessionid', $sessids);
-        $DB->delete_records('attendance_sessions', array('attendanceid' => $id));
+        $DB->delete_records('attendance_sessions', ['attendanceid' => $id]);
     }
-    $DB->delete_records('attendance_statuses', array('attendanceid' => $id));
+    $DB->delete_records('attendance_statuses', ['attendanceid' => $id]);
 
-    $DB->delete_records('attendance_warning', array('idnumber' => $id));
+    $DB->delete_records('attendance_warning', ['idnumber' => $id]);
 
-    $DB->delete_records('attendance', array('id' => $id));
+    $DB->delete_records('attendance', ['id' => $id]);
 
     attendance_grade_item_delete($attendance);
 
@@ -199,7 +199,7 @@ function attendance_reset_course_form_definition(&$mform) {
  * @return array
  */
 function attendance_reset_course_form_defaults($course) {
-    return array('reset_attendance_log' => 0, 'reset_attendance_statuses' => 0, 'reset_attendance_sessions' => 0);
+    return ['reset_attendance_log' => 0, 'reset_attendance_statuses' => 0, 'reset_attendance_sessions' => 0];
 }
 
 /**
@@ -211,9 +211,9 @@ function attendance_reset_course_form_defaults($course) {
 function attendance_reset_userdata($data) {
     global $DB;
 
-    $status = array();
+    $status = [];
 
-    $attids = array_keys($DB->get_records('attendance', array('course' => $data->courseid), '', 'id'));
+    $attids = array_keys($DB->get_records('attendance', ['course' => $data->courseid], '', 'id'));
 
     if (!empty($data->reset_attendance_log)) {
         $sess = $DB->get_records_list('attendance_sessions', 'attendanceid', $attids, '', 'id');
@@ -227,11 +227,11 @@ function attendance_reset_userdata($data) {
                 $DB->set_field_select('attendance_sessions', 'automarkcompleted', 0, "attendanceid $sql", $params);
             }
 
-            $status[] = array(
+            $status[] = [
                 'component' => get_string('modulenameplural', 'attendance'),
                 'item' => get_string('attendancedata', 'attendance'),
-                'error' => false
-            );
+                'error' => false,
+            ];
         }
     }
 
@@ -241,11 +241,11 @@ function attendance_reset_userdata($data) {
             att_add_default_statuses($attid);
         }
 
-        $status[] = array(
+        $status[] = [
             'component' => get_string('modulenameplural', 'attendance'),
             'item' => get_string('sessions', 'attendance'),
-            'error' => false
-        );
+            'error' => false,
+        ];
     }
 
     if (!empty($data->reset_attendance_sessions)) {
@@ -255,11 +255,11 @@ function attendance_reset_userdata($data) {
         }
         $DB->delete_records_list('attendance_sessions', 'attendanceid', $attids);
 
-        $status[] = array(
+        $status[] = [
             'component' => get_string('modulenameplural', 'attendance'),
             'item' => get_string('statuses', 'attendance'),
-            'error' => false
-        );
+            'error' => false,
+        ];
     }
 
     return $status;
@@ -349,15 +349,15 @@ function attendance_grade_item_update($attendance, $grades=null) {
     if (!isset($attendance->courseid)) {
         $attendance->courseid = $attendance->course;
     }
-    if (!$DB->get_record('course', array('id' => $attendance->course))) {
+    if (!$DB->get_record('course', ['id' => $attendance->course])) {
         error("Course is misconfigured");
     }
 
     if (!empty($attendance->cmidnumber)) {
-        $params = array('itemname' => $attendance->name, 'idnumber' => $attendance->cmidnumber);
+        $params = ['itemname' => $attendance->name, 'idnumber' => $attendance->cmidnumber];
     } else {
         // MDL-14303.
-        $params = array('itemname' => $attendance->name);
+        $params = ['itemname' => $attendance->name];
     }
 
     if ($attendance->grade > 0) {
@@ -395,7 +395,7 @@ function attendance_grade_item_delete($attendance) {
     }
 
     return grade_update('mod/attendance', $attendance->courseid, 'mod', 'attendance',
-                        $attendance->id, 0, null, array('deleted' => 1));
+                        $attendance->id, 0, null, ['deleted' => 1]);
 }
 
 /**
@@ -444,18 +444,18 @@ function attendance_pluginfile($course, $cm, $context, $filearea, $args, $forced
 
     require_login($course, false, $cm);
 
-    if (!$DB->record_exists('attendance', array('id' => $cm->instance))) {
+    if (!$DB->record_exists('attendance', ['id' => $cm->instance])) {
         return false;
     }
 
     // Session area is served by pluginfile.php.
-    $fileareas = array('session');
+    $fileareas = ['session'];
     if (!in_array($filearea, $fileareas)) {
         return false;
     }
 
     $sessid = (int)array_shift($args);
-    if (!$DB->record_exists('attendance_sessions', array('id' => $sessid))) {
+    if (!$DB->record_exists('attendance_sessions', ['id' => $sessid])) {
         return false;
     }
 
@@ -476,7 +476,7 @@ function attendance_pluginfile($course, $cm, $context, $filearea, $args, $forced
 function attendance_print_settings_tabs($selected = 'settings') {
     global $CFG;
     // Print tabs for different settings pages.
-    $tabs = array();
+    $tabs = [];
     $tabs[] = new tabobject('settings', "{$CFG->wwwroot}/{$CFG->admin}/settings.php?section=modsettingattendance",
         get_string('settings', 'attendance'), get_string('settings'), false);
 
@@ -506,7 +506,7 @@ function attendance_print_settings_tabs($selected = 'settings') {
         get_string('importsessions', 'attendance'), get_string('importsessions', 'attendance'), false);
 
     ob_start();
-    print_tabs(array($tabs), $selected);
+    print_tabs([$tabs], $selected);
     $tabmenu = ob_get_contents();
     ob_end_clean();
 
@@ -586,34 +586,34 @@ function attendance_extend_settings_navigation(settings_navigation $settingsnav,
     $nodes = [];
     if (has_capability('mod/attendance:viewreports', $context)) {
         $nodes[] = ['url' => new moodle_url('/mod/attendance/report.php', ['id' => $cm->id]),
-                    'title' => get_string('report', 'attendance')];
+                    'title' => get_string('report', 'attendance'), ];
     }
     if (has_capability('mod/attendance:import', $context)) {
         $nodes[] = ['url' => new moodle_url('/mod/attendance/import.php', ['id' => $cm->id]),
-                    'title' => get_string('import', 'attendance')];
+                    'title' => get_string('import', 'attendance'), ];
     }
     if (has_capability('mod/attendance:export', $context)) {
         $nodes[] = ['url' => new moodle_url('/mod/attendance/export.php', ['id' => $cm->id]),
-                    'title' => get_string('export', 'attendance')];
+                    'title' => get_string('export', 'attendance'), ];
     }
 
     if (has_capability('mod/attendance:viewreports', $context) && get_config('attendance', 'enablewarnings')) {
         $nodes[] = ['url' => new moodle_url('/mod/attendance/absentee.php', ['id' => $cm->id]),
-                    'title' => get_string('absenteereport', 'attendance')];
+                    'title' => get_string('absenteereport', 'attendance'), ];
     }
     if (has_capability('mod/attendance:changepreferences', $context)) {
         $nodes[] = ['url' => new moodle_url('/mod/attendance/preferences.php', ['id' => $cm->id]),
-                    'title' => get_string('statussetsettings', 'attendance')];
+                    'title' => get_string('statussetsettings', 'attendance'), ];
         if (get_config('attendance', 'enablewarnings')) {
             $nodes[] = ['url' => new moodle_url('/mod/attendance/warnings.php', ['id' => $cm->id]),
-            'title' => get_string('warnings', 'attendance')];
+            'title' => get_string('warnings', 'attendance'), ];
         }
     }
 
     if (has_capability('mod/attendance:managetemporaryusers', context_module::instance($cm->id))) {
         $nodes[] = ['url' => new moodle_url('/mod/attendance/tempusers.php', ['id' => $cm->id]),
         'title' => get_string('tempusers', 'attendance'),
-        'more' => true];
+        'more' => true, ];
     }
 
     foreach ($nodes as $node) {
diff --git a/locallib.php b/locallib.php
index a668b066b45..328989e9159 100644
--- a/locallib.php
+++ b/locallib.php
@@ -64,7 +64,7 @@ function attendance_get_statuses($attid, $onlyvisible=true, $statusset = -1) {
     global $DB;
 
     // Set selector.
-    $params = array('aid' => $attid);
+    $params = ['aid' => $attid];
     $setsql = '';
     if ($statusset >= 0) {
         $params['statusset'] = $statusset;
@@ -94,7 +94,7 @@ function attendance_get_setname($attid, $statusset, $includevalues = true) {
     $statusname = get_string('statusset', 'mod_attendance', $statusset + 1);
     if ($includevalues) {
         $statuses = attendance_get_statuses($attid, true, $statusset);
-        $statusesout = array();
+        $statusesout = [];
         foreach ($statuses as $status) {
             $statusesout[] = $status->acronym;
         }
@@ -125,24 +125,24 @@ function attendance_get_user_sessions_log_full($userid, $pageparams) {
     list($usql, $uparams) = $DB->get_in_or_equal(array_keys($usercourses), SQL_PARAMS_NAMED, 'cid0');
 
     $coursesql = "(1 = 1)";
-    $courseparams = array();
+    $courseparams = [];
     $now = time();
     if ($pageparams->sesscourses === 'current') {
         $coursesql = "(c.startdate = 0 OR c.startdate <= :now1) AND (c.enddate = 0 OR c.enddate >= :now2)";
-        $courseparams = array(
+        $courseparams = [
             'now1' => $now,
             'now2' => $now,
-        );
+        ];
     }
 
     $datesql = "(1 = 1)";
-    $dateparams = array();
+    $dateparams = [];
     if ($pageparams->startdate && $pageparams->enddate) {
         $datesql = "ats.sessdate >= :sdate AND ats.sessdate < :edate";
-        $dateparams = array(
+        $dateparams = [
             'sdate'     => $pageparams->startdate,
             'edate'     => $pageparams->enddate,
-        );
+        ];
     }
 
     if ($pageparams->groupby === 'date') {
@@ -174,10 +174,10 @@ function attendance_get_user_sessions_log_full($userid, $pageparams) {
                AND $coursesql
           ORDER BY $ordersql";
 
-    $params = array(
+    $params = [
         'uid'       => $userid,
         'uid1'      => $userid,
-    );
+    ];
     $params = array_merge($params, $uparams);
     $params = array_merge($params, $dateparams);
     $params = array_merge($params, $courseparams);
@@ -219,7 +219,7 @@ function attendance_get_user_courses_attendances($userid) {
              WHERE att.course $usql
           ORDER BY coursefullname ASC, attname ASC";
 
-    $params = array_merge($uparams, array('uid' => $userid));
+    $params = array_merge($uparams, ['uid' => $userid]);
 
     return $DB->get_records_sql($sql, $params);
 }
@@ -246,7 +246,7 @@ function attendance_calc_fraction($part, $total) {
  */
 function attendance_has_logs_for_status($statusid) {
     global $DB;
-    return $DB->record_exists('attendance_log', array('statusid' => $statusid));
+    return $DB->record_exists('attendance_log', ['statusid' => $statusid]);
 }
 
 /**
@@ -265,7 +265,7 @@ function attendance_form_sessiondate_selector (MoodleQuickForm $mform) {
         $minutes[$i] = sprintf("%02d", $i);
     }
 
-    $sesendtime = array();
+    $sesendtime = [];
     if (!right_to_left()) {
         $sesendtime[] =& $mform->createElement('static', 'from', '', get_string('from', 'attendance'));
         $sesendtime[] =& $mform->createElement('select', 'starthour', get_string('hour', 'form'), $hours, false, true);
@@ -281,7 +281,7 @@ function attendance_form_sessiondate_selector (MoodleQuickForm $mform) {
         $sesendtime[] =& $mform->createElement('select', 'endminute', get_string('minute', 'form'), $minutes, false, true);
         $sesendtime[] =& $mform->createElement('select', 'endhour', get_string('hour', 'form'), $hours, false, true);
     }
-    $mform->addGroup($sesendtime, 'sestime', get_string('time', 'attendance'), array(' '), true);
+    $mform->addGroup($sesendtime, 'sestime', get_string('time', 'attendance'), [' '], true);
 }
 
 /**
@@ -294,7 +294,7 @@ function attendance_get_max_statusset($attendanceid) {
     global $DB;
 
     $max = $DB->get_field_sql('SELECT MAX(setnumber) FROM {attendance_statuses} WHERE attendanceid = ? AND deleted = 0',
-        array($attendanceid));
+        [$attendanceid]);
     if ($max) {
         return $max;
     }
@@ -308,7 +308,7 @@ function attendance_get_max_statusset($attendanceid) {
  * @return array
  */
 function attendance_get_statusset_maxpoints($statuses) {
-    $statussetmaxpoints = array();
+    $statussetmaxpoints = [];
     foreach ($statuses as $st) {
         if (!isset($statussetmaxpoints[$st->setnumber])) {
             $statussetmaxpoints[$st->setnumber] = $st->grade;
@@ -323,7 +323,7 @@ function attendance_get_statusset_maxpoints($statuses) {
  * @param mod_attendance_structure|stdClass $attendance
  * @param array $userids
  */
-function attendance_update_users_grade($attendance, $userids=array()) {
+function attendance_update_users_grade($attendance, $userids=[]) {
     global $DB;
 
     if (empty($attendance->grade)) {
@@ -340,7 +340,7 @@ function attendance_update_users_grade($attendance, $userids=array()) {
     }
 
     if ($attendance->grade < 0) {
-        $dbparams = array('id' => -($attendance->grade));
+        $dbparams = ['id' => -($attendance->grade)];
         $scale = $DB->get_record('scale', $dbparams);
         $scalearray = explode(',', $scale->scale);
         $attendancegrade = count($scalearray);
@@ -348,7 +348,7 @@ function attendance_update_users_grade($attendance, $userids=array()) {
         $attendancegrade = $attendance->grade;
     }
 
-    $grades = array();
+    $grades = [];
     foreach ($userids as $userid) {
         $grades[$userid] = new stdClass();
         $grades[$userid]->userid = $userid;
@@ -388,7 +388,7 @@ function attendance_update_users_grades_by_id($attendanceid, $grade, $userids) {
     }
 
     if ($grade < 0) {
-        $dbparams = array('id' => -($grade));
+        $dbparams = ['id' => -($grade)];
         $scale = $DB->get_record('scale', $dbparams);
         $scalearray = explode(',', $scale->scale);
         $attendancegrade = count($scalearray);
@@ -396,7 +396,7 @@ function attendance_update_users_grades_by_id($attendanceid, $grade, $userids) {
         $attendancegrade = $grade;
     }
 
-    $grades = array();
+    $grades = [];
     foreach ($userids as $userid) {
         $grades[$userid] = new stdClass();
         $grades[$userid]->userid = $userid;
@@ -433,12 +433,12 @@ function attendance_add_status($status) {
         $id = $DB->insert_record('attendance_statuses', $status);
         $status->id = $id;
 
-        $event = \mod_attendance\event\status_added::create(array(
+        $event = \mod_attendance\event\status_added::create([
             'objectid' => $status->attendanceid,
             'context' => $status->context,
-            'other' => array('acronym' => $status->acronym,
+            'other' => ['acronym' => $status->acronym,
                              'description' => $status->description,
-                             'grade' => $status->grade)));
+                             'grade' => $status->grade, ]]);
         if (!empty($status->cm)) {
             $event->add_record_snapshot('course_modules', $status->cm);
         }
@@ -462,14 +462,14 @@ function attendance_remove_status($status, $context = null, $cm = null) {
     if (empty($context)) {
         $context = context_system::instance();
     }
-    $DB->set_field('attendance_statuses', 'deleted', 1, array('id' => $status->id));
-    $event = \mod_attendance\event\status_removed::create(array(
+    $DB->set_field('attendance_statuses', 'deleted', 1, ['id' => $status->id]);
+    $event = \mod_attendance\event\status_removed::create([
         'objectid' => $status->id,
         'context' => $context,
-        'other' => array(
+        'other' => [
             'acronym' => $status->acronym,
-            'description' => $status->description
-        )));
+            'description' => $status->description,
+        ]]);
     if (!empty($cm)) {
         $event->add_record_snapshot('course_modules', $cm);
     }
@@ -505,10 +505,10 @@ function attendance_update_status($status, $acronym, $description, $grade, $visi
         $status->visible = $visible;
         $updated[] = $visible ? get_string('show') : get_string('hide');
     } else if (empty($acronym) || empty($description)) {
-        return array('acronym' => $acronym, 'description' => $description);
+        return ['acronym' => $acronym, 'description' => $description];
     }
 
-    $updated = array();
+    $updated = [];
 
     if ($acronym) {
         $status->acronym = $acronym;
@@ -544,11 +544,11 @@ function attendance_update_status($status, $acronym, $description, $grade, $visi
     }
     $DB->update_record('attendance_statuses', $status);
 
-    $event = \mod_attendance\event\status_updated::create(array(
+    $event = \mod_attendance\event\status_updated::create([
         'objectid' => $status->attendanceid,
         'context' => $context,
-        'other' => array('acronym' => $acronym, 'description' => $description, 'grade' => $grade,
-            'updated' => implode(' ', $updated))));
+        'other' => ['acronym' => $acronym, 'description' => $description, 'grade' => $grade,
+            'updated' => implode(' ', $updated), ]]);
     if (!empty($cm)) {
         $event->add_record_snapshot('course_modules', $cm);
     }
@@ -611,9 +611,9 @@ function attendance_check_allow_update($sessionid) {
  */
 function attendance_is_status_availablebeforesession($sessionid, $statusid = null) {
     global $DB;
-    $attendanceid = $DB->get_field('attendance_sessions', 'attendanceid', array('id' => $sessionid));
+    $attendanceid = $DB->get_field('attendance_sessions', 'attendanceid', ['id' => $sessionid]);
     $params = ['deleted' => 0, 'visible' => 1, 'availablebeforesession' => 1,
-               'attendanceid' => $attendanceid];
+               'attendanceid' => $attendanceid, ];
 
     if (!empty($statusid)) {
         $params['id'] = $statusid;
@@ -659,12 +659,12 @@ function attendance_can_student_mark($sess, $log = true) {
         if ($sess->preventsharedip == ATTENDANCE_SHAREDIP_MINUTES) {
             $time = time() - ($sess->preventsharediptime * 60);
             $sql = 'sessionid = ? AND studentid <> ? AND timetaken > ? AND ipaddress = ?';
-            $params = array($sess->id, $USER->id, $time, getremoteaddr());
+            $params = [$sess->id, $USER->id, $time, getremoteaddr()];
             $record = $DB->get_record_select('attendance_log', $sql, $params);
         } else {
             // Assume ATTENDANCE_SHAREDIP_FORCED.
             $sql = 'sessionid = ? AND studentid <> ? AND ipaddress = ?';
-            $params = array($sess->id, $USER->id, getremoteaddr());
+            $params = [$sess->id, $USER->id, getremoteaddr()];
             $record = $DB->get_record_select('attendance_log', $sql, $params);
         }
 
@@ -673,22 +673,22 @@ function attendance_can_student_mark($sess, $log = true) {
             $reason = 'preventsharederror';
             if ($log) {
                 // Trigger an ip_shared event.
-                $attendanceid = $DB->get_field('attendance_sessions', 'attendanceid', array('id' => $record->sessionid));
+                $attendanceid = $DB->get_field('attendance_sessions', 'attendanceid', ['id' => $record->sessionid]);
                 $cm = get_coursemodule_from_instance('attendance', $attendanceid);
-                $event = \mod_attendance\event\session_ip_shared::create(array(
+                $event = \mod_attendance\event\session_ip_shared::create([
                     'objectid' => 0,
                     'context' => \context_module::instance($cm->id),
-                    'other' => array(
+                    'other' => [
                         'sessionid' => $record->sessionid,
-                        'otheruser' => $record->studentid
-                    )
-                ));
+                        'otheruser' => $record->studentid,
+                    ],
+                ]);
 
                 $event->trigger();
             }
         }
     }
-    return array($canmark, $reason);
+    return [$canmark, $reason];
 }
 
 /**
@@ -806,7 +806,7 @@ function attendance_construct_sessions_data_for_add($formdata, mod_attendance_st
         $calendarevent = 1;
     }
 
-    $sessions = array();
+    $sessions = [];
     if (isset($formdata->addmultiply)) {
         $startdate = $sessiondate;
         $enddate = $formdata->sessionenddate + DAYSECS; // Because enddate in 0:0am.
@@ -825,7 +825,7 @@ function attendance_construct_sessions_data_for_add($formdata, mod_attendance_st
             $startweek = $startdate - ($wday - 1) * DAYSECS;
         }
 
-        $wdaydesc = array(0 => 'Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat');
+        $wdaydesc = [0 => 'Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'];
 
         while ($sdate < $enddate) {
             if ($sdate < strtotime('+1 week', $startweek)) {
@@ -1035,11 +1035,11 @@ function attendance_fill_groupid($formdata, &$sessions, $sess) {
  * @param string $orderby - optional order by param
  * @return stdClass
  */
-function attendance_course_users_points($courseids = array(), $orderby = '') {
+function attendance_course_users_points($courseids = [], $orderby = '') {
     global $DB;
 
     $where = '';
-    $params = array();
+    $params = [];
     $where .= ' AND ats.sessdate < :enddate ';
     $params['enddate'] = time();
 
@@ -1085,13 +1085,13 @@ function attendance_course_users_points($courseids = array(), $orderby = '') {
  * @param bool $allfornotify get notification list for scheduled task.
  * @return stdClass
  */
-function attendance_get_users_to_notify($courseids = array(), $orderby = '', $allfornotify = false) {
+function attendance_get_users_to_notify($courseids = [], $orderby = '', $allfornotify = false) {
     global $DB, $CFG;
 
     $joingroup = 'LEFT JOIN {groups_members} gm ON (gm.userid = atl.studentid AND gm.groupid = ats.groupid)';
     $where = ' AND (ats.groupid = 0 or gm.id is NOT NULL)';
     $having = '';
-    $params = array();
+    $params = [];
 
     if (!empty($courseids)) {
         list($insql, $inparams) = $DB->get_in_or_equal($courseids, SQL_PARAMS_NAMED);
@@ -1171,7 +1171,7 @@ function attendance_get_users_to_notify($courseids = array(), $orderby = '', $al
  * @return array - the content of the fields after templating.
  */
 function attendance_template_variables($record) {
-    $templatevars = array(
+    $templatevars = [
         '/%coursename%/' => $record->coursename,
         '/%courseid%/' => $record->courseid,
         '/%userfirstname%/' => $record->firstname,
@@ -1184,7 +1184,7 @@ function attendance_template_variables($record) {
         '/%points%/' => $record->points,
         '/%maxpoints%/' => $record->maxpoints,
         '/%percent%/' => round($record->percent * 100),
-    );
+    ];
     $extrauserfields = \core_user\fields::get_name_fields();
     foreach ($extrauserfields as $extra) {
         $templatevars['/%'.$extra.'%/'] = $record->$extra;
@@ -1192,7 +1192,7 @@ function attendance_template_variables($record) {
     $patterns = array_keys($templatevars); // The placeholders which are to be replaced.
     $replacements = array_values($templatevars); // The values which are to be templated in for the placeholders.
     // Array to describe which fields in reengagement object should have a template replacement.
-    $replacementfields = array('emailsubject', 'emailcontent');
+    $replacementfields = ['emailsubject', 'emailcontent'];
 
     // Replace %variable% with relevant value everywhere it occurs in reengagement->field.
     foreach ($replacementfields as $field) {
@@ -1248,7 +1248,7 @@ function attendance_session_get_highest_status(mod_attendance_structure $att, $a
 function attendance_get_automarkoptions() {
     global $COURSE;
 
-    $options = array();
+    $options = [];
 
     $options[ATTENDANCE_AUTOMARK_DISABLED] = get_string('noautomark', 'attendance');
     if (strpos(get_config('tool_log', 'enabled_stores'), 'logstore_standard') !== false) {
@@ -1291,7 +1291,7 @@ function attendance_get_coursemodulenames($id) {
  * @return array
  */
 function attendance_get_sharedipoptions() {
-    $options = array();
+    $options = [];
     $options[ATTENDANCE_SHAREDIP_DISABLED] = get_string('no');
     $options[ATTENDANCE_SHAREDIP_FORCE] = get_string('yes');
     $options[ATTENDANCE_SHAREDIP_MINUTES] = get_string('setperiod', 'attendance');
@@ -1404,11 +1404,11 @@ function attendance_renderqrcode($session) {
 function attendance_generate_passwords($session) {
     global $DB;
     $attconfig = get_config('attendance');
-    $password = array();
+    $password = [];
 
     for ($i = 0; $i < 30; $i++) {
-        array_push($password, array("attendanceid" => $session->id,
-            "password" => random_string(), "expirytime" => time() + ($attconfig->rotateqrcodeinterval * $i)));
+        array_push($password, ["attendanceid" => $session->id,
+            "password" => random_string(), "expirytime" => time() + ($attconfig->rotateqrcodeinterval * $i)]);
     }
 
     $DB->insert_records('attendance_rotate_passwords', $password);
@@ -1424,13 +1424,13 @@ function attendance_renderqrcoderotate($session) {
     echo html_writer::tag('script', '',
         [
             'src' => 'js/qrcode/qrcode.min.js',
-            'type' => 'text/javascript'
+            'type' => 'text/javascript',
         ]
     );
     echo html_writer::tag('script', '',
         [
             'src' => 'js/password/attendance_QRCodeRotate.js',
-            'type' => 'text/javascript'
+            'type' => 'text/javascript',
         ]
     );
     echo html_writer::div('', '', ['id' => 'qrcode']); // Div to display qr code.
diff --git a/manage.php b/manage.php
index 4bb857584a0..d0b1a492350 100644
--- a/manage.php
+++ b/manage.php
@@ -34,19 +34,19 @@
 $pageparams->perpage        = get_config('attendance', 'resultsperpage');
 
 $cm             = get_coursemodule_from_id('attendance', $id, 0, false, MUST_EXIST);
-$course         = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
-$att            = $DB->get_record('attendance', array('id' => $cm->instance), '*', MUST_EXIST);
+$course         = $DB->get_record('course', ['id' => $cm->course], '*', MUST_EXIST);
+$att            = $DB->get_record('attendance', ['id' => $cm->instance], '*', MUST_EXIST);
 
 require_login($course, true, $cm);
 
 $context = context_module::instance($cm->id);
-$capabilities = array(
+$capabilities = [
     'mod/attendance:manageattendances',
     'mod/attendance:takeattendances',
-    'mod/attendance:changeattendances'
-);
+    'mod/attendance:changeattendances',
+];
 if (!has_any_capability($capabilities, $context)) {
-    $url = new moodle_url('/mod/attendance/view.php', array('id' => $cm->id));
+    $url = new moodle_url('/mod/attendance/view.php', ['id' => $cm->id]);
     redirect($url);
 }
 
@@ -62,7 +62,7 @@
         $nottaken = !$sess->lasttaken && has_capability('mod/attendance:takeattendances', $context);
         $canchange = $sess->lasttaken && has_capability('mod/attendance:changeattendances', $context);
         if ($nottaken || $canchange) {
-            redirect($att->url_take(array('sessionid' => $sess->id, 'grouptype' => $sess->groupid)));
+            redirect($att->url_take(['sessionid' => $sess->id, 'grouptype' => $sess->groupid]));
         }
     } else if ($size > 1) {
         $att->curdate = $today;
diff --git a/messageselect.php b/messageselect.php
index 86ab968c8f9..fccb6188b21 100644
--- a/messageselect.php
+++ b/messageselect.php
@@ -32,7 +32,7 @@
 $returnto = optional_param('returnto', '', PARAM_LOCALURL);
 $format = optional_param('format', FORMAT_MOODLE, PARAM_INT);
 $deluser = optional_param('deluser', 0, PARAM_INT);
-$url = new moodle_url('/user/messageselect.php', array('id' => $id));
+$url = new moodle_url('/user/messageselect.php', ['id' => $id]);
 
 if ($send !== '') {
     $url->param('send', $send);
@@ -56,17 +56,17 @@
     $messagebody = $messagebody['text'];
 }
 $PAGE->set_url($url);
-$course = $DB->get_record('course', array('id' => $id), '*', MUST_EXIST);
+$course = $DB->get_record('course', ['id' => $id], '*', MUST_EXIST);
 
 require_login($course);
 $coursecontext = context_course::instance($id);   // Course context.
 $systemcontext = context_system::instance();   // SYSTEM context.
 require_capability('moodle/course:bulkmessaging', $coursecontext);
 if (empty($SESSION->emailto)) {
-    $SESSION->emailto = array();
+    $SESSION->emailto = [];
 }
 if (!array_key_exists($id, $SESSION->emailto)) {
-    $SESSION->emailto[$id] = array();
+    $SESSION->emailto[$id] = [];
 }
 if ($deluser) {
     if (array_key_exists($id, $SESSION->emailto) && array_key_exists($deluser, $SESSION->emailto[$id])) {
@@ -74,7 +74,7 @@
     }
 }
 if (empty($SESSION->emailselect[$id]) || $messagebody) {
-    $SESSION->emailselect[$id] = array('messagebody' => $messagebody);
+    $SESSION->emailselect[$id] = ['messagebody' => $messagebody];
 }
 $messagebody = $SESSION->emailselect[$id]['messagebody'];
 $count = 0;
@@ -86,7 +86,7 @@
     foreach ($data as $k => $v) {
         if (preg_match('/^(user|teacher)(\d+)$/', $k, $m)) {
             if (!array_key_exists($m[2], $SESSION->emailto[$id])) {
-                if ($user = $DB->get_record_select('user', "id = ?", array($m[2]), 'id, '.
+                if ($user = $DB->get_record_select('user', "id = ?", [$m[2]], 'id, '.
                     $namefields . ', idnumber, email, mailformat, lastaccess, lang, '.
                     'maildisplay, auth, suspended, deleted, emailstop, username')) {
                     $SESSION->emailto[$id][$m[2]] = $user;
@@ -106,7 +106,7 @@
 $link = null;
 if (has_capability('moodle/course:viewparticipants', $coursecontext) ||
     has_capability('moodle/site:viewparticipants', $systemcontext)) {
-    $link = new moodle_url("/user/index.php", array('id' => $course->id));
+    $link = new moodle_url("/user/index.php", ['id' => $course->id]);
 }
 $PAGE->navbar->add(get_string('participants'), $link);
 $PAGE->navbar->add($strtitle);
@@ -138,7 +138,7 @@
             echo '<input type="submit" name="edit" value="'.get_string('update').'" /></p>';
             echo "\n</form>";
         } else if (!empty($send)) {
-            $fails = array();
+            $fails = [];
             foreach ($SESSION->emailto[$id] as $user) {
                 if (!message_post_message($USER, $user, $messagebody, $format)) {
                     $user->fullname = fullname($user);
@@ -176,9 +176,9 @@
 }
 $PAGE->requires->yui_module('moodle-core-formchangechecker',
     'M.core_formchangechecker.init',
-    array(array(
-        'formid' => 'theform'
-    ))
+    [[
+        'formid' => 'theform',
+    ], ]
 );
 $PAGE->requires->string_for_js('changesmadereallygoaway', 'moodle');
 echo $OUTPUT->footer();
diff --git a/mod_form.php b/mod_form.php
index 838b842c5fb..ae5881db45d 100644
--- a/mod_form.php
+++ b/mod_form.php
@@ -47,7 +47,7 @@ public function definition() {
 
         $mform->addElement('header', 'general', get_string('general', 'form'));
 
-        $mform->addElement('text', 'name', get_string('name'), array('size' => '64'));
+        $mform->addElement('text', 'name', get_string('name'), ['size' => '64']);
         $mform->setType('name', PARAM_TEXT);
         $mform->addRule('name', null, 'required', null, 'client');
         $mform->setDefault('name', get_string('modulename', 'attendance'));
@@ -62,7 +62,7 @@ public function definition() {
         // IP address.
         if (get_config('attendance', 'subnetactivitylevel')) {
             $mform->addElement('header', 'security', get_string('extrarestrictions', 'attendance'));
-            $mform->addElement('text', 'subnet', get_string('defaultsubnet', 'attendance'), array('size' => '164'));
+            $mform->addElement('text', 'subnet', get_string('defaultsubnet', 'attendance'), ['size' => '164']);
             $mform->setType('subnet', PARAM_TEXT);
             $mform->addHelpButton('subnet', 'defaultsubnet', 'attendance');
             $mform->setDefault('subnet', $attendanceconfig->subnet);
diff --git a/password.php b/password.php
index 26c92349e05..ef642d3c77a 100644
--- a/password.php
+++ b/password.php
@@ -30,13 +30,13 @@
 require_once($CFG->libdir.'/tcpdf/tcpdf_barcodes_2d.php'); // Used for generating qrcode.
 
 $session = required_param('session', PARAM_INT);
-$session = $DB->get_record('attendance_sessions', array('id' => $session), '*', MUST_EXIST);
+$session = $DB->get_record('attendance_sessions', ['id' => $session], '*', MUST_EXIST);
 
 $cm = get_coursemodule_from_instance('attendance', $session->attendanceid);
 require_login($cm->course, $cm);
 
 $context = context_module::instance($cm->id);
-$capabilities = array('mod/attendance:manageattendances', 'mod/attendance:takeattendances', 'mod/attendance:changeattendances');
+$capabilities = ['mod/attendance:manageattendances', 'mod/attendance:takeattendances', 'mod/attendance:changeattendances'];
 if (!has_any_capability($capabilities, $context)) {
     exit;
 }
diff --git a/password_ajax.php b/password_ajax.php
index 3f3f1651f35..aef16f2b567 100644
--- a/password_ajax.php
+++ b/password_ajax.php
@@ -28,13 +28,13 @@
 require_once(dirname(__FILE__).'/../../config.php');
 
 $session = required_param('session', PARAM_INT);
-$session = $DB->get_record('attendance_sessions', array('id' => $session), '*', MUST_EXIST);
+$session = $DB->get_record('attendance_sessions', ['id' => $session], '*', MUST_EXIST);
 
 $cm = get_coursemodule_from_instance('attendance', $session->attendanceid);
 require_login($cm->course, $cm);
 
 $context = context_module::instance($cm->id);
-$capabilities = array('mod/attendance:manageattendances', 'mod/attendance:takeattendances', 'mod/attendance:changeattendances');
+$capabilities = ['mod/attendance:manageattendances', 'mod/attendance:takeattendances', 'mod/attendance:changeattendances'];
 if (!has_any_capability($capabilities, $context)) {
     exit;
 }
diff --git a/preferences.php b/preferences.php
index ef8775c1fb4..8da77efa71d 100644
--- a/preferences.php
+++ b/preferences.php
@@ -33,8 +33,8 @@
 $pageparams->statusset      = optional_param('statusset', 0, PARAM_INT); // Set of statuses to view.
 
 $cm             = get_coursemodule_from_id('attendance', $id, 0, false, MUST_EXIST);
-$course         = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
-$att            = $DB->get_record('attendance', array('id' => $cm->instance), '*', MUST_EXIST);
+$course         = $DB->get_record('course', ['id' => $cm->course], '*', MUST_EXIST);
+$att            = $DB->get_record('attendance', ['id' => $cm->instance], '*', MUST_EXIST);
 
 require_login($course, true, $cm);
 
@@ -56,7 +56,7 @@
 $PAGE->set_cacheable(true);
 $PAGE->navbar->add(get_string('settings', 'attendance'));
 $PAGE->requires->js_call_amd('mod_attendance/statusset', 'init');
-$errors = array();
+$errors = [];
 
 // Check sesskey if we are performing an action.
 if (!empty($att->pageparams->action)) {
@@ -109,7 +109,7 @@
         $message .= str_repeat(html_writer::empty_tag('br'), 2);
         $message .= $status->acronym.': '.
                     ($status->description ? $status->description : get_string('nodescription', 'attendance'));
-        $params = array_merge($att->pageparams->get_significant_params(), array('confirm' => 1));
+        $params = array_merge($att->pageparams->get_significant_params(), ['confirm' => 1]);
         echo $OUTPUT->header();
         echo $OUTPUT->confirm($message, $att->url_preferences($params), $att->url_preferences());
         echo $OUTPUT->footer();
diff --git a/renderhelpers.php b/renderhelpers.php
index 5216d90a136..8eb632cb813 100644
--- a/renderhelpers.php
+++ b/renderhelpers.php
@@ -31,7 +31,7 @@
  */
 class user_sessions_cells_generator {
     /** @var array $cells - list of table cells. */
-    protected $cells = array();
+    protected $cells = [];
 
     /** @var stdClass $reportdata - data for report. */
     protected $reportdata;
diff --git a/report.php b/report.php
index 083a08d2515..2535c40daa9 100644
--- a/report.php
+++ b/report.php
@@ -37,8 +37,8 @@
 $pageparams->perpage    = get_config('attendance', 'resultsperpage');
 
 $cm             = get_coursemodule_from_id('attendance', $id, 0, false, MUST_EXIST);
-$course         = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
-$attrecord = $DB->get_record('attendance', array('id' => $cm->instance), '*', MUST_EXIST);
+$course         = $DB->get_record('course', ['id' => $cm->course], '*', MUST_EXIST);
+$attrecord = $DB->get_record('attendance', ['id' => $cm->instance], '*', MUST_EXIST);
 
 require_login($course, true, $cm);
 
@@ -77,11 +77,11 @@
 $reportdata = new mod_attendance\output\report_data($att);
 
 // Trigger a report viewed event.
-$event = \mod_attendance\event\report_viewed::create(array(
+$event = \mod_attendance\event\report_viewed::create([
     'objectid' => $att->id,
     'context' => $PAGE->context,
-    'other' => array()
-));
+    'other' => [],
+]);
 $event->add_record_snapshot('course_modules', $cm);
 $event->add_record_snapshot('attendance', $attrecord);
 $event->trigger();
diff --git a/resetcalendar.php b/resetcalendar.php
index 5705f4ed2db..9748b41a835 100644
--- a/resetcalendar.php
+++ b/resetcalendar.php
@@ -49,7 +49,7 @@
 if (get_config('attendance', 'enablecalendar')) {
     // Check to see if all sessions that need them have calendar events.
     if ($action == 'create' && confirm_sesskey()) {
-        $sessions = $DB->get_recordset('attendance_sessions',  array('caleventid' => 0, 'calendarevent' => 1));
+        $sessions = $DB->get_recordset('attendance_sessions',  ['caleventid' => 0, 'calendarevent' => 1]);
         foreach ($sessions as $session) {
             attendance_create_calendar_event($session);
             if ($session->caleventid) {
@@ -59,9 +59,9 @@
         $sessions->close();
         echo $OUTPUT->notification(get_string('eventscreated', 'mod_attendance'), 'notifysuccess');
     } else {
-        if ($DB->record_exists('attendance_sessions', array('caleventid' => 0, 'calendarevent' => 1))) {
-            $createurl = new moodle_url('/mod/attendance/resetcalendar.php', array('action' => 'create'));
-            $returnurl = new moodle_url("/{$CFG->admin}/settings.php", array('section' => 'modsettingattendance'));
+        if ($DB->record_exists('attendance_sessions', ['caleventid' => 0, 'calendarevent' => 1])) {
+            $createurl = new moodle_url('/mod/attendance/resetcalendar.php', ['action' => 'create']);
+            $returnurl = new moodle_url("/{$CFG->admin}/settings.php", ['section' => 'modsettingattendance']);
 
             echo $OUTPUT->confirm(get_string('resetcaledarcreate', 'mod_attendance'), $createurl, $returnurl);
         } else {
@@ -76,8 +76,8 @@
     } else {
         // Check to see if there are any events that need to be deleted.
         if ($DB->record_exists_select('attendance_sessions', 'caleventid > 0')) {
-            $deleteurl = new moodle_url('/mod/attendance/resetcalendar.php', array('action' => 'delete'));
-            $returnurl = new moodle_url("/{$CFG->admin}/settings.php", array('section' => 'modsettingattendance'));
+            $deleteurl = new moodle_url('/mod/attendance/resetcalendar.php', ['action' => 'delete']);
+            $returnurl = new moodle_url("/{$CFG->admin}/settings.php", ['section' => 'modsettingattendance']);
 
             echo $OUTPUT->confirm(get_string('resetcaledardelete', 'mod_attendance'), $deleteurl, $returnurl);
         } else {
diff --git a/sessions.php b/sessions.php
index 5ac28a7e9f7..5db1e47659f 100644
--- a/sessions.php
+++ b/sessions.php
@@ -38,13 +38,13 @@
 if (empty($pageparams->action)) {
     // The form on manage.php can submit with the "choose" option - this should be fixed in the long term,
     // but in the meantime show a useful error and redirect when it occurs.
-    $url = new moodle_url('/mod/attendance/view.php', array('id' => $id));
+    $url = new moodle_url('/mod/attendance/view.php', ['id' => $id]);
     redirect($url, get_string('invalidaction', 'mod_attendance'), 2);
 }
 
 $cm             = get_coursemodule_from_id('attendance', $id, 0, false, MUST_EXIST);
-$course         = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
-$att            = $DB->get_record('attendance', array('id' => $cm->instance), '*', MUST_EXIST);
+$course         = $DB->get_record('course', ['id' => $cm->course], '*', MUST_EXIST);
+$att            = $DB->get_record('attendance', ['id' => $cm->instance], '*', MUST_EXIST);
 
 require_login($course, true, $cm);
 
@@ -53,17 +53,17 @@
 
 $att = new mod_attendance_structure($att, $cm, $course, $context, $pageparams);
 
-$PAGE->set_url($att->url_sessions(array('action' => $pageparams->action)));
+$PAGE->set_url($att->url_sessions(['action' => $pageparams->action]));
 $PAGE->set_title($course->shortname. ": ".$att->name);
 $PAGE->set_heading($course->fullname);
 $PAGE->force_settings_menu(true);
 $PAGE->set_cacheable(true);
 $PAGE->navbar->add($att->name);
 
-$formparams = array('course' => $course, 'cm' => $cm, 'modcontext' => $context, 'att' => $att);
+$formparams = ['course' => $course, 'cm' => $cm, 'modcontext' => $context, 'att' => $att];
 switch ($att->pageparams->action) {
     case mod_attendance_sessions_page_params::ACTION_ADD:
-        $url = $att->url_sessions(array('action' => mod_attendance_sessions_page_params::ACTION_ADD));
+        $url = $att->url_sessions(['action' => mod_attendance_sessions_page_params::ACTION_ADD]);
         $mform = new \mod_attendance\form\addsession($url, $formparams);
 
         if ($mform->is_cancelled()) {
@@ -93,7 +93,7 @@
     case mod_attendance_sessions_page_params::ACTION_UPDATE:
         $sessionid = required_param('sessionid', PARAM_INT);
 
-        $url = $att->url_sessions(array('action' => mod_attendance_sessions_page_params::ACTION_UPDATE, 'sessionid' => $sessionid));
+        $url = $att->url_sessions(['action' => mod_attendance_sessions_page_params::ACTION_UPDATE, 'sessionid' => $sessionid]);
         $formparams['sessionid'] = $sessionid;
         $mform = new \mod_attendance\form\updatesession($url, $formparams);
 
@@ -121,7 +121,7 @@
         $confirm   = optional_param('confirm', null, PARAM_INT);
 
         if (isset($confirm) && confirm_sesskey()) {
-            $att->delete_sessions(array($sessionid));
+            $att->delete_sessions([$sessionid]);
             attendance_update_users_grade($att);
             redirect($att->url_manage(), get_string('sessiondeleted', 'attendance'));
         }
@@ -134,7 +134,7 @@
         $message .= html_writer::empty_tag('br');
         $message .= $sessinfo->description;
 
-        $params = array('action' => $att->pageparams->action, 'sessionid' => $sessionid, 'confirm' => 1, 'sesskey' => sesskey());
+        $params = ['action' => $att->pageparams->action, 'sessionid' => $sessionid, 'confirm' => 1, 'sesskey' => sesskey()];
 
         echo $OUTPUT->header();
         echo $OUTPUT->confirm($message, $att->url_sessions($params), $att->url_manage());
@@ -168,8 +168,8 @@
         }
 
         $sessionsids = implode('_', $sessid);
-        $params = array('action' => $att->pageparams->action, 'sessionsids' => $sessionsids,
-                        'confirm' => 1, 'sesskey' => sesskey());
+        $params = ['action' => $att->pageparams->action, 'sessionsids' => $sessionsids,
+                        'confirm' => 1, 'sesskey' => sesskey(), ];
 
         echo $OUTPUT->header();
         echo $OUTPUT->confirm($message, $att->url_sessions($params), $att->url_manage());
@@ -181,7 +181,7 @@
 
         $slist = !empty($sessid) ? implode('_', $sessid) : '';
 
-        $url = $att->url_sessions(array('action' => mod_attendance_sessions_page_params::ACTION_CHANGE_DURATION));
+        $url = $att->url_sessions(['action' => mod_attendance_sessions_page_params::ACTION_CHANGE_DURATION]);
         $formparams['ids'] = $slist;
         $mform = new mod_attendance\form\duration($url, $formparams);
 
@@ -214,7 +214,7 @@
         $a->date = userdate($course->startdate);
         $message = get_string('confirmdeletehiddensessions', 'attendance', $a);
 
-        $params = array('action' => $att->pageparams->action, 'confirm' => 1, 'sesskey' => sesskey());
+        $params = ['action' => $att->pageparams->action, 'confirm' => 1, 'sesskey' => sesskey()];
         echo $OUTPUT->header();
         echo $OUTPUT->confirm($message, $att->url_sessions($params), $att->url_manage());
         echo $OUTPUT->footer();
diff --git a/settings.php b/settings.php
index 43de1946eb8..f203e8be66b 100644
--- a/settings.php
+++ b/settings.php
@@ -36,7 +36,7 @@
     $plugininfos = core_plugin_manager::instance()->get_plugins_of_type('local');
 
     // Paging options.
-    $options = array(
+    $options = [
           0 => get_string('donotusepaging', 'attendance'),
          25 => 25,
          50 => 50,
@@ -45,7 +45,7 @@
          250 => 250,
          500 => 500,
          1000 => 1000,
-    );
+    ];
 
     $settings->add(new admin_setting_configselect('attendance/resultsperpage',
         get_string('resultsperpage', 'attendance'), get_string('resultsperpage_desc', 'attendance'), 25, $options));
@@ -76,14 +76,14 @@
         get_string('subnetactivitylevel', 'attendance'),
         get_string('subnetactivitylevel_desc', 'attendance'), 1));
 
-    $options = array(
+    $options = [
         ATT_VIEW_ALL => get_string('all', 'attendance'),
         ATT_VIEW_ALLPAST => get_string('allpast', 'attendance'),
         ATT_VIEW_NOTPRESENT => get_string('below', 'attendance', 'X'),
         ATT_VIEW_MONTHS => get_string('months', 'attendance'),
         ATT_VIEW_WEEKS => get_string('weeks', 'attendance'),
-        ATT_VIEW_DAYS => get_string('days', 'attendance')
-    );
+        ATT_VIEW_DAYS => get_string('days', 'attendance'),
+    ];
 
     $settings->add(new admin_setting_configselect('attendance/defaultview',
         get_string('defaultview', 'attendance'),
@@ -113,7 +113,7 @@
         get_string('automarkuseempty', 'attendance'),
         get_string('automarkuseempty_desc', 'attendance'), 1));
 
-    $fields = array('id' => get_string('studentid', 'attendance'));
+    $fields = ['id' => get_string('studentid', 'attendance')];
     $customfields = profile_get_custom_fields();
     foreach ($customfields as $field) {
         $fields[$field->shortname] = format_string($field->name);
@@ -122,7 +122,7 @@
     $settings->add(new admin_setting_configmultiselect('attendance/customexportfields',
             new lang_string('customexportfields', 'attendance'),
             new lang_string('customexportfields_help', 'attendance'),
-            array('id'), $fields)
+            ['id'], $fields)
     );
 
     $name = new lang_string('mobilesettings', 'mod_attendance');
@@ -192,14 +192,14 @@
     $description = new lang_string('defaultwarningsettings_help', 'mod_attendance');
     $settings->add(new admin_setting_heading('defaultwarningsettings', $name, $description));
 
-    $options = array();
+    $options = [];
     for ($i = 1; $i <= 100; $i++) {
         $options[$i] = "$i%";
     }
     $settings->add(new admin_setting_configselect('attendance/warningpercent',
         get_string('warningpercent', 'attendance'), get_string('warningpercent_help', 'attendance'), 70, $options));
 
-    $options = array();
+    $options = [];
     for ($i = 1; $i <= 50; $i++) {
         $options[$i] = "$i";
     }
diff --git a/take.php b/take.php
index fdd3df83c2e..fca3768a3ac 100644
--- a/take.php
+++ b/take.php
@@ -38,10 +38,10 @@
 $pageparams->perpage    = optional_param('perpage', get_config('attendance', 'resultsperpage'), PARAM_INT);
 
 $cm             = get_coursemodule_from_id('attendance', $id, 0, false, MUST_EXIST);
-$course         = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
-$att            = $DB->get_record('attendance', array('id' => $cm->instance), '*', MUST_EXIST);
+$course         = $DB->get_record('course', ['id' => $cm->course], '*', MUST_EXIST);
+$att            = $DB->get_record('attendance', ['id' => $cm->instance], '*', MUST_EXIST);
 // Check this is a valid session for this attendance.
-$session        = $DB->get_record('attendance_sessions', array('id' => $pageparams->sessionid, 'attendanceid' => $att->id),
+$session        = $DB->get_record('attendance_sessions', ['id' => $pageparams->sessionid, 'attendanceid' => $att->id],
                                   '*', MUST_EXIST);
 
 require_login($course, true, $cm);
@@ -77,9 +77,9 @@
     if (!empty($att->pageparams->page) && $att->pageparams->page && $totalusers && $usersperpage) {
         $numberofpages = ceil($totalusers / $usersperpage);
         if ($att->pageparams->page < $numberofpages) {
-            $params = array(
+            $params = [
                 'sessionid' => $att->pageparams->sessionid,
-                'grouptype' => $att->pageparams->grouptype);
+                'grouptype' => $att->pageparams->grouptype, ];
             $params['page'] = $att->pageparams->page + 1;
             redirect($att->url_take($params), get_string('moreattendance', 'attendance'));
         }
diff --git a/tempedit.php b/tempedit.php
index c2549f42eb6..bec72e916c2 100644
--- a/tempedit.php
+++ b/tempedit.php
@@ -31,13 +31,13 @@
 $action = optional_param('action', null, PARAM_ALPHA);
 
 $cm = get_coursemodule_from_id('attendance', $id, 0, false, MUST_EXIST);
-$course = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
-$att = $DB->get_record('attendance', array('id' => $cm->instance), '*', MUST_EXIST);
-$tempuser = $DB->get_record('attendance_tempusers', array('id' => $userid), '*', MUST_EXIST);
+$course = $DB->get_record('course', ['id' => $cm->course], '*', MUST_EXIST);
+$att = $DB->get_record('attendance', ['id' => $cm->instance], '*', MUST_EXIST);
+$tempuser = $DB->get_record('attendance_tempusers', ['id' => $userid], '*', MUST_EXIST);
 
 $att = new mod_attendance_structure($att, $cm, $course);
 
-$params = array('userid' => $tempuser->id);
+$params = ['userid' => $tempuser->id];
 if ($action) {
     $params['action'] = $action;
 }
@@ -60,19 +60,19 @@
         require_sesskey();
 
         // Remove the user from the grades table, the attendance log and the tempusers table.
-        $DB->delete_records('grade_grades', array('userid' => $tempuser->studentid));
-        $DB->delete_records('attendance_log', array('studentid' => $tempuser->studentid));
-        $DB->delete_records('attendance_tempusers', array('id' => $tempuser->id));
+        $DB->delete_records('grade_grades', ['userid' => $tempuser->studentid]);
+        $DB->delete_records('attendance_log', ['studentid' => $tempuser->studentid]);
+        $DB->delete_records('attendance_tempusers', ['id' => $tempuser->id]);
 
         redirect($att->url_managetemp());
     } else {
 
-        $info = (object)array(
+        $info = (object)[
             'fullname' => $tempuser->fullname,
             'email' => $tempuser->email,
-        );
+        ];
         $msg = get_string('confirmdeleteuser', 'attendance', $info);
-        $continue = new moodle_url($PAGE->url, array('confirm' => 1, 'sesskey' => sesskey()));
+        $continue = new moodle_url($PAGE->url, ['confirm' => 1, 'sesskey' => sesskey()]);
 
         echo $output->header();
         echo $output->confirm($msg, $continue, $att->url_managetemp());
diff --git a/tempmerge.php b/tempmerge.php
index c041e8c1fbe..aa1e66b86df 100644
--- a/tempmerge.php
+++ b/tempmerge.php
@@ -30,12 +30,12 @@
 $userid = required_param('userid', PARAM_INT);
 
 $cm = get_coursemodule_from_id('attendance', $id, 0, false, MUST_EXIST);
-$course = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
-$att = $DB->get_record('attendance', array('id' => $cm->instance), '*', MUST_EXIST);
-$tempuser = $DB->get_record('attendance_tempusers', array('id' => $userid), '*', MUST_EXIST);
+$course = $DB->get_record('course', ['id' => $cm->course], '*', MUST_EXIST);
+$att = $DB->get_record('attendance', ['id' => $cm->instance], '*', MUST_EXIST);
+$tempuser = $DB->get_record('attendance_tempusers', ['id' => $userid], '*', MUST_EXIST);
 
 $att = new mod_attendance_structure($att, $cm, $course);
-$params = array('userid' => $tempuser->id);
+$params = ['userid' => $tempuser->id];
 $PAGE->set_url($att->url_tempmerge($params));
 
 require_login($course, true, $cm);
@@ -45,14 +45,14 @@
 $PAGE->set_cacheable(true);
 $PAGE->navbar->add(get_string('tempusermerge', 'attendance'));
 
-$formdata = (object)array(
+$formdata = (object)[
     'id' => $cm->id,
     'userid' => $tempuser->id,
-);
+];
 
-$custom = array(
+$custom = [
     'description' => format_string($tempuser->fullname).' ('.format_string($tempuser->email).')',
-);
+];
 $mform = new mod_attendance\form\tempmerge(null, $custom);
 $mform->set_data($formdata);
 
@@ -67,25 +67,25 @@
               LEFT JOIN {attendance_log} lt ON lt.sessionid = s.id AND lt.studentid = :tempuserid
              WHERE s.attendanceid = :attendanceid AND lt.id IS NOT NULL
              ORDER BY s.id";
-    $params = array(
+    $params = [
         'realuserid' => $data->participant,
         'tempuserid' => $tempuser->studentid,
         'attendanceid' => $att->id,
-    );
+    ];
     $logs = $DB->get_recordset_sql($sql, $params);
 
     foreach ($logs as $log) {
         if (!is_null($log->reallogid)) {
             // Remove the existing attendance for the real user for this session.
-            $DB->delete_records('attendance_log', array('id' => $log->reallogid));
+            $DB->delete_records('attendance_log', ['id' => $log->reallogid]);
         }
         // Adjust the 'temp user' attendance record to point at the real user.
-        $DB->set_field('attendance_log', 'studentid', $data->participant, array('id' => $log->templogid));
+        $DB->set_field('attendance_log', 'studentid', $data->participant, ['id' => $log->templogid]);
     }
 
     // Delete the temp user.
-    $DB->delete_records('attendance_tempusers', array('id' => $tempuser->id));
-    $att->update_users_grade(array($data->participant)); // Update the gradebook after the merge.
+    $DB->delete_records('attendance_tempusers', ['id' => $tempuser->id]);
+    $att->update_users_grade([$data->participant]); // Update the gradebook after the merge.
 
     redirect($att->url_managetemp());
 }
diff --git a/tempusers.php b/tempusers.php
index 5c8774464b4..65c66332fe1 100644
--- a/tempusers.php
+++ b/tempusers.php
@@ -29,8 +29,8 @@
 $id = required_param('id', PARAM_INT);
 
 $cm = get_coursemodule_from_id('attendance', $id, 0, false, MUST_EXIST);
-$course = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
-$att = $DB->get_record('attendance', array('id' => $cm->instance), '*', MUST_EXIST);
+$course = $DB->get_record('course', ['id' => $cm->course], '*', MUST_EXIST);
+$att = $DB->get_record('attendance', ['id' => $cm->instance], '*', MUST_EXIST);
 
 $att = new mod_attendance_structure($att, $cm, $course);
 $PAGE->set_url($att->url_managetemp());
@@ -47,9 +47,9 @@
 
 $output = $PAGE->get_renderer('mod_attendance');
 
-$formdata = (object)array(
+$formdata = (object)[
     'id' => $cm->id,
-);
+];
 $mform = new mod_attendance\form\tempuser();
 $mform->set_data($formdata);
 
@@ -81,7 +81,7 @@
 echo $output->header();
 $mform->display();
 
-$tempusers = $DB->get_records('attendance_tempusers', array('courseid' => $course->id), 'fullname, email');
+$tempusers = $DB->get_records('attendance_tempusers', ['courseid' => $course->id], 'fullname, email');
 
 echo '<div>';
 echo '<p style="margin-left:10%;">'.get_string('tempuserslist', 'attendance').'</p>';
@@ -118,7 +118,7 @@ function attendance_print_tempusers($tempusers, mod_attendance_structure $att) {
         echo '<td>'.format_string($tempuser->fullname).'</td>';
         echo '<td>'.format_string($tempuser->email).'</td>';
         echo '<td>'.userdate($tempuser->created, get_string('strftimedatetime')).'</td>';
-        $params = array('userid' => $tempuser->id);
+        $params = ['userid' => $tempuser->id];
         $editlink = html_writer::link($att->url_tempedit($params), get_string('edituser', 'attendance'));
         $deletelink = html_writer::link($att->url_tempdelete($params), get_string('deleteuser', 'attendance'));
         $mergelink = html_writer::link($att->url_tempmerge($params), get_string('mergeuser', 'attendance'));
diff --git a/tests/behat/behat_mod_attendance.php b/tests/behat/behat_mod_attendance.php
index 8058b2e4116..3e767a0bf5b 100644
--- a/tests/behat/behat_mod_attendance.php
+++ b/tests/behat/behat_mod_attendance.php
@@ -70,7 +70,7 @@ protected function resolve_page_instance_url(string $type, string $identifier):
      */
     protected function get_attendance_by_name(string $name): stdClass {
         global $DB;
-        return $DB->get_record('attendance', array('name' => $name), '*', MUST_EXIST);
+        return $DB->get_record('attendance', ['name' => $name], '*', MUST_EXIST);
     }
 
     /**
diff --git a/tests/external/external_test.php b/tests/external/external_test.php
index 45a6ea79c27..4c42b4266f8 100644
--- a/tests/external/external_test.php
+++ b/tests/external/external_test.php
@@ -72,10 +72,10 @@ public function setUp(): void {
         global $CFG, $DB;
         require_once($CFG->dirroot . '/mod/attendance/externallib.php');
         $this->category = $this->getDataGenerator()->create_category();
-        $this->course = $this->getDataGenerator()->create_course(array('category' => $this->category->id));
-        $att = $this->getDataGenerator()->create_module('attendance', array('course' => $this->course->id));
-        $cm = $DB->get_record('course_modules', array('id' => $att->cmid), '*', MUST_EXIST);
-        $course = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
+        $this->course = $this->getDataGenerator()->create_course(['category' => $this->category->id]);
+        $att = $this->getDataGenerator()->create_module('attendance', ['course' => $this->course->id]);
+        $cm = $DB->get_record('course_modules', ['id' => $att->cmid], '*', MUST_EXIST);
+        $course = $DB->get_record('course', ['id' => $cm->course], '*', MUST_EXIST);
         $this->attendance = new mod_attendance_structure($att, $cm, $course);
 
         $this->create_and_enrol_users();
@@ -102,7 +102,7 @@ public function setUp(): void {
 
     /** Creating 10 students and 1 teacher. */
     protected function create_and_enrol_users() {
-        $this->students = array();
+        $this->students = [];
         for ($i = 0; $i < 10; $i++) {
             $this->students[] = $this->getDataGenerator()->create_and_enrol($this->course, 'student');
         }
@@ -135,9 +135,9 @@ public function test_get_courses_with_today_sessions_multiple_instances() {
         $this->resetAfterTest(true);
 
         // Make another attendance.
-        $att = $this->getDataGenerator()->create_module('attendance', array('course' => $this->course->id));
-        $cm = $DB->get_record('course_modules', array('id' => $att->cmid), '*', MUST_EXIST);
-        $course = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
+        $att = $this->getDataGenerator()->create_module('attendance', ['course' => $this->course->id]);
+        $cm = $DB->get_record('course_modules', ['id' => $att->cmid], '*', MUST_EXIST);
+        $course = $DB->get_record('course', ['id' => $cm->course], '*', MUST_EXIST);
         $second = new mod_attendance_structure($att, $cm, $course);
 
         // Just add the same session.
@@ -265,7 +265,7 @@ public function test_add_attendance() {
 
         // Become a teacher.
         $teacher = self::getDataGenerator()->create_user();
-        $teacherrole = $DB->get_record('role', array('shortname' => 'editingteacher'));
+        $teacherrole = $DB->get_record('role', ['shortname' => 'editingteacher']);
         $this->getDataGenerator()->enrol_user($teacher->id, $course->id, $teacherrole->id);
         $this->setUser($teacher);
 
@@ -312,7 +312,7 @@ public function test_remove_attendance() {
 
         // Become a teacher.
         $teacher = self::getDataGenerator()->create_user();
-        $teacherrole = $DB->get_record('role', array('shortname' => 'editingteacher'));
+        $teacherrole = $DB->get_record('role', ['shortname' => 'editingteacher']);
         $this->getDataGenerator()->enrol_user($teacher->id, $this->course->id, $teacherrole->id);
         $this->setUser($teacher);
 
@@ -335,11 +335,11 @@ public function test_add_session() {
         $this->resetAfterTest(true);
 
         $course = $this->getDataGenerator()->create_course();
-        $group = $this->getDataGenerator()->create_group(array('courseid' => $course->id));
+        $group = $this->getDataGenerator()->create_group(['courseid' => $course->id]);
 
         // Become a teacher.
         $teacher = self::getDataGenerator()->create_user();
-        $teacherrole = $DB->get_record('role', array('shortname' => 'editingteacher'));
+        $teacherrole = $DB->get_record('role', ['shortname' => 'editingteacher']);
         $this->getDataGenerator()->enrol_user($teacher->id, $course->id, $teacherrole->id);
         $this->setUser($teacher);
 
@@ -378,11 +378,11 @@ public function test_add_session_group_in_no_group_exception() {
         $this->resetAfterTest(true);
 
         $course = $this->getDataGenerator()->create_course();
-        $group = $this->getDataGenerator()->create_group(array('courseid' => $course->id));
+        $group = $this->getDataGenerator()->create_group(['courseid' => $course->id]);
 
         // Become a teacher.
         $teacher = self::getDataGenerator()->create_user();
-        $teacherrole = $DB->get_record('role', array('shortname' => 'editingteacher'));
+        $teacherrole = $DB->get_record('role', ['shortname' => 'editingteacher']);
         $this->getDataGenerator()->enrol_user($teacher->id, $course->id, $teacherrole->id);
         $this->setUser($teacher);
 
@@ -406,11 +406,11 @@ public function test_add_session_invalid_group_exception() {
         $this->resetAfterTest(true);
 
         $course = $this->getDataGenerator()->create_course();
-        $group = $this->getDataGenerator()->create_group(array('courseid' => $course->id));
+        $group = $this->getDataGenerator()->create_group(['courseid' => $course->id]);
 
         // Become a teacher.
         $teacher = self::getDataGenerator()->create_user();
-        $teacherrole = $DB->get_record('role', array('shortname' => 'editingteacher'));
+        $teacherrole = $DB->get_record('role', ['shortname' => 'editingteacher']);
         $this->getDataGenerator()->enrol_user($teacher->id, $course->id, $teacherrole->id);
         $this->setUser($teacher);
 
diff --git a/view.php b/view.php
index 0bc59bb2129..869ccfd8569 100644
--- a/view.php
+++ b/view.php
@@ -38,8 +38,8 @@
 $pageparams->sesscourses = optional_param('sesscourses', 'current', PARAM_ALPHA);
 
 $cm             = get_coursemodule_from_id('attendance', $id, 0, false, MUST_EXIST);
-$course         = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
-$attendance    = $DB->get_record('attendance', array('id' => $cm->instance), '*', MUST_EXIST);
+$course         = $DB->get_record('course', ['id' => $cm->course], '*', MUST_EXIST);
+$attendance    = $DB->get_record('attendance', ['id' => $cm->instance], '*', MUST_EXIST);
 
 require_login($course, true, $cm);
 $context = context_module::instance($cm->id);
@@ -51,11 +51,11 @@
 // Not specified studentid for displaying attendance?
 // Redirect to appropriate page if can.
 if (!$pageparams->studentid) {
-    $capabilities = array(
+    $capabilities = [
         'mod/attendance:manageattendances',
         'mod/attendance:takeattendances',
-        'mod/attendance:changeattendances'
-    );
+        'mod/attendance:changeattendances',
+    ];
     if (has_any_capability($capabilities, $context)) {
         redirect($att->url_manage());
     } else if (has_capability('mod/attendance:viewreports', $context)) {
@@ -76,7 +76,7 @@
 $PAGE->set_url($url);
 
 $buttons = '';
-$capabilities = array('mod/attendance:takeattendances', 'mod/attendance:changeattendances');
+$capabilities = ['mod/attendance:takeattendances', 'mod/attendance:changeattendances'];
 if (has_any_capability($capabilities, $context) &&
     $pageparams->mode == mod_attendance_view_page_params::MODE_ALL_SESSIONS) {
 
@@ -105,12 +105,12 @@
 $userdata = new mod_attendance\output\user_data($att, $userid);
 
 // Create url for link in log screen.
-$filterparams = array(
+$filterparams = [
     'view' => $userdata->pageparams->view,
     'curdate' => $userdata->pageparams->curdate,
     'startdate' => $userdata->pageparams->startdate,
-    'enddate' => $userdata->pageparams->enddate
-);
+    'enddate' => $userdata->pageparams->enddate,
+];
 $params = array_merge($userdata->pageparams->get_significant_params(), $filterparams);
 
 
@@ -124,20 +124,20 @@
     $userdata->take_sessions_from_form_data($formdata);
 
     // Trigger updated event.
-    $event = \mod_attendance\event\session_report_updated::create(array(
+    $event = \mod_attendance\event\session_report_updated::create([
         'relateduserid' => $relateduserid,
         'context' => $context,
-        'other' => $params));
+        'other' => $params]);
     $event->add_record_snapshot('course_modules', $cm);
     $event->trigger();
 
     redirect($url, get_string('attendancesuccess', 'attendance'));
 } else {
     // Trigger viewed event.
-    $event = \mod_attendance\event\session_report_viewed::create(array(
+    $event = \mod_attendance\event\session_report_viewed::create([
         'relateduserid' => $relateduserid,
         'context' => $context,
-        'other' => $params));
+        'other' => $params]);
     $event->add_record_snapshot('course_modules', $cm);
     $event->trigger();
 }
diff --git a/warnings.php b/warnings.php
index 2b1446774ed..60daab87f89 100644
--- a/warnings.php
+++ b/warnings.php
@@ -48,8 +48,8 @@
 } else {
     // This is an attendance level config.
     $cm             = get_coursemodule_from_id('attendance', $id, 0, false, MUST_EXIST);
-    $course         = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
-    $att            = $DB->get_record('attendance', array('id' => $cm->instance), '*', MUST_EXIST);
+    $course         = $DB->get_record('course', ['id' => $cm->course], '*', MUST_EXIST);
+    $att            = $DB->get_record('attendance', ['id' => $cm->instance], '*', MUST_EXIST);
 
     require_login($course, false, $cm);
     $context = context_module::instance($cm->id);
@@ -66,7 +66,7 @@
     echo $output->header();
 }
 
-$mform = new mod_attendance\form\addwarning($url, array('notid' => $notid, 'id' => $id));
+$mform = new mod_attendance\form\addwarning($url, ['notid' => $notid, 'id' => $id]);
 
 if ($data = $mform->get_data()) {
     if (empty($data->notid)) {
@@ -89,9 +89,9 @@
         if (!empty($data->thirdpartyemails)) {
             $notify->thirdpartyemails = implode(',', $data->thirdpartyemails);
         }
-        $existingrecord = $DB->record_exists('attendance_warning', array('idnumber' => $notify->idnumber,
+        $existingrecord = $DB->record_exists('attendance_warning', ['idnumber' => $notify->idnumber,
                                                                          'warningpercent' => $notify->warningpercent,
-                                                                              'warnafter' => $notify->warnafter));
+                                                                              'warnafter' => $notify->warnafter]);
         if (empty($existingrecord)) {
             $DB->insert_record('attendance_warning', $notify);
             echo $OUTPUT->notification(get_string('warningupdated', 'mod_attendance'), 'success');
@@ -100,7 +100,7 @@
         }
 
     } else {
-        $notify = $DB->get_record('attendance_warning', array('id' => $data->notid));
+        $notify = $DB->get_record('attendance_warning', ['id' => $data->notid]);
         if (!empty($id) && $data->idnumber != $att->id) {
             // Someone is trying to update a record for a different attendance.
             throw new moodle_exception('invalidcoursemodule');
@@ -119,8 +119,8 @@
             if (!empty($data->thirdpartyemails)) {
                 $notify->thirdpartyemails = implode(',', $data->thirdpartyemails);
             }
-            $existingrecord = $DB->get_record('attendance_warning', array('idnumber' => $notify->idnumber,
-                'warningpercent' => $notify->warningpercent, 'warnafter' => $notify->warnafter));
+            $existingrecord = $DB->get_record('attendance_warning', ['idnumber' => $notify->idnumber,
+                'warningpercent' => $notify->warningpercent, 'warnafter' => $notify->warnafter]);
             if (empty($existingrecord) || $existingrecord->id == $notify->id) {
                 $DB->update_record('attendance_warning', $notify);
                 echo $OUTPUT->notification(get_string('warningupdated', 'mod_attendance'), 'success');
@@ -133,13 +133,13 @@
 if ($action == 'delete' && !empty($notid)) {
     if (!optional_param('confirm', false, PARAM_BOOL)) {
         $cancelurl = $url;
-        $url->params(array('action' => 'delete', 'notid' => $notid, 'sesskey' => sesskey(), 'confirm' => true, 'id' => $id));
+        $url->params(['action' => 'delete', 'notid' => $notid, 'sesskey' => sesskey(), 'confirm' => true, 'id' => $id]);
         echo $OUTPUT->confirm(get_string('deletewarningconfirm', 'mod_attendance'), $url, $cancelurl);
         echo $OUTPUT->footer();
         exit;
     } else {
         require_sesskey();
-        $params = array('id' => $notid);
+        $params = ['id' => $notid];
         if (!empty($att)) {
             // Add id/level to array.
             $params['idnumber'] = $att->id;
@@ -149,9 +149,9 @@
     }
 }
 if ($action == 'update' && !empty($notid)) {
-    $existing = $DB->get_record('attendance_warning', array('id' => $notid));
+    $existing = $DB->get_record('attendance_warning', ['id' => $notid]);
     $content = $existing->emailcontent;
-    $existing->emailcontent = array();
+    $existing->emailcontent = [];
     $existing->emailcontent['text'] = $content;
     $existing->emailcontent['format'] = $existing->emailcontentformat;
     $existing->notid = $existing->id;
@@ -170,28 +170,28 @@
     }
     echo $OUTPUT->box($warningdesc, 'generalbox attendancedesc', 'notice');
     $existingnotifications = $DB->get_records('attendance_warning',
-        array('idnumber' => $idnumber),
+        ['idnumber' => $idnumber],
         'warningpercent');
 
     if (!empty($existingnotifications)) {
         $table = new html_table();
-        $table->head = array(get_string('warningthreshold', 'mod_attendance'),
+        $table->head = [get_string('warningthreshold', 'mod_attendance'),
             get_string('numsessions', 'mod_attendance'),
             get_string('emailsubject', 'mod_attendance'),
-            '');
+            '', ];
         foreach ($existingnotifications as $notification) {
-            $url->params(array('action' => 'delete', 'notid' => $notification->id, 'id' => $id));
+            $url->params(['action' => 'delete', 'notid' => $notification->id, 'id' => $id]);
             $actionbuttons = $OUTPUT->action_icon($url, new pix_icon('t/delete',
                 get_string('delete', 'attendance')), null, null);
-            $url->params(array('action' => 'update', 'notid' => $notification->id, 'id' => $id));
+            $url->params(['action' => 'update', 'notid' => $notification->id, 'id' => $id]);
             $actionbuttons .= $OUTPUT->action_icon($url, new pix_icon('t/edit',
                 get_string('update', 'attendance')), null, null);
-            $table->data[] = array($notification->warningpercent, $notification->warnafter,
-                                   $notification->emailsubject, $actionbuttons);
+            $table->data[] = [$notification->warningpercent, $notification->warnafter,
+                                   $notification->emailsubject, $actionbuttons, ];
         }
         echo html_writer::table($table);
     }
-    $addurl = new moodle_url('/mod/attendance/warnings.php', array('action' => 'add', 'id' => $id));
+    $addurl = new moodle_url('/mod/attendance/warnings.php', ['action' => 'add', 'id' => $id]);
     echo $OUTPUT->single_button($addurl, get_string('addwarning', 'mod_attendance'));
 
 }