fix warnings with syslog checkconfiguration

htdocs/core/modules/syslog/logHandler.php

@@ -87,11 +87,11 @@ public function configure()
  * It will be called after setting the configuration.
  * The function returns an array with error messages
  *
- * @return array
+ * @return bool
  */
  public function checkConfiguration()
  {
- return array();
+ return true;
  }
 
  /**

htdocs/core/modules/syslog/logHandlerInterface.php

@@ -1,4 +1,6 @@
 <?php
+/* Copyright (C) 2024 Frédéric France <[email protected]>
+ */
 /*
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -79,7 +81,7 @@ public function isActive();
  /**
  * Output log content
  *
- * @param string $content Content to log
+ * @param array $content Content to log
  * @return void
  */
  public function export($content);

phpstan.neon.dist

@@ -9,7 +9,7 @@ parameters:
  # minimumNumberOfJobsPerProcess: 2 # default is 2
  # buffer: 134217728 # 128 MB # Not documented
  customRulesetUsed: true
- level: 2
+ level: 3
  fileExtensions:
  - php
  paths: