diff --git a/.gitignore b/.gitignore
index a9c49be..e1d2b15 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,5 +3,6 @@
 /vendor/
 /var/
 
+.phpcs-cache
 .phpunit.result.cache
 composer.lock
diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000..d6669e5
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,18 @@
+language: php
+
+php:
+    - 8.1
+    - 8.2
+
+before_install:
+    - curl -s https://getcomposer.org/installer | php
+    - composer req roave/security-advisories:dev-master --no-update
+    - composer install
+
+script:
+    - php -v
+    - vendor/bin/phpcs --standard=psr2 src/
+    - vendor/bin/phpunit
+
+after_success:
+    - bash <(curl -s https://codecov.io/bash)
diff --git a/composer.json b/composer.json
index 367e86d..802cb1b 100644
--- a/composer.json
+++ b/composer.json
@@ -24,6 +24,13 @@
     "require-dev": {
         "roave/security-advisories": "dev-latest",
         "symfony/test-pack": "^1.1",
-        "symfony/framework-bundle": "^6.3"
+        "symfony/framework-bundle": "^6.3",
+        "squizlabs/php_codesniffer": "^3.7",
+        "slevomat/coding-standard": "^8.13"
+    },
+    "config": {
+        "allow-plugins": {
+            "dealerdirect/phpcodesniffer-composer-installer": true
+        }
     }
 }
diff --git a/phpcs.xml b/phpcs.xml
new file mode 100644
index 0000000..d224db0
--- /dev/null
+++ b/phpcs.xml
@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<ruleset xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:noNamespaceSchemaLocation="vendor/squizlabs/php_codesniffer/phpcs.xsd">
+
+    <arg name="basepath" value="."/>
+    <arg name="cache" value=".phpcs-cache"/>
+    <arg name="colors"/>
+    <arg name="extensions" value="php"/>
+    <arg name="encoding" value="utf8" />
+
+    <rule ref="PSR12" />
+
+    <rule ref="SlevomatCodingStandard.PHP.OptimizedFunctionsWithoutUnpacking"/>
+    <rule ref="SlevomatCodingStandard.Namespaces.FullyQualifiedGlobalFunctions">
+        <properties>
+            <property name="includeSpecialFunctions" value="true"/>
+        </properties>
+    </rule>
+
+    <rule ref="Generic.PHP.ForbiddenFunctions">
+      <properties>
+        <property name="forbiddenFunctions" type="array" value="eval=>null,dd=>null,sizeof=>count,delete=>unset,print=>echo,dump=>null,var_dump=>null,create_function=>null,eval=>null,system=>null"/>
+      </properties>
+    </rule>
+
+    <file>src/</file>
+</ruleset>
diff --git a/phpstan.neon b/phpstan.neon
new file mode 100644
index 0000000..914f562
--- /dev/null
+++ b/phpstan.neon
@@ -0,0 +1,21 @@
+includes:
+    - vendor/phpstan/phpstan-symfony/extension.neon
+    - vendor/phpstan/phpstan-phpunit/extension.neon
+
+parameters:
+    level: 1
+
+    paths:
+        - src
+    excludePaths:
+        - tests
+        - var
+        - vendor
+
+    parallel:
+        jobSize: 32
+        maximumNumberOfProcesses: 64
+        minimumNumberOfJobsPerProcess: 4
+
+    symfony:
+        containerXmlPath: var/cache/test/App_KernelDevDebugContainer.xml
diff --git a/src/Providers/ImgProxy/Builder/Processing/Zoom.php b/src/Providers/ImgProxy/Builder/Processing/Zoom.php
index e9586d0..511e12a 100644
--- a/src/Providers/ImgProxy/Builder/Processing/Zoom.php
+++ b/src/Providers/ImgProxy/Builder/Processing/Zoom.php
@@ -6,7 +6,7 @@
 
 class Zoom implements ProcessOptionInterface
 {
-    private const ZOOM_TPL = 'z:%zoom_x_y';
+    private const ZOOM_TPL    = 'z:%zoom_x_y';
     private const ZOOM_XY_TPL = 'z:%zoom_x:%zoom_y';
 
     public function __construct(protected string $zoomX = "1", protected ?string $zoomY = null)
@@ -33,11 +33,13 @@ public function __construct(protected string $zoomX = "1", protected ?string $zo
     public function compile(): string
     {
         $equal = $this->zoomX === $this->zoomY;
-        $tpl = $equal ? self::ZOOM_TPL : self::ZOOM_XY_TPL;
+        $tpl   = $equal ? self::ZOOM_TPL : self::ZOOM_XY_TPL;
 
-        return \strtr($tpl, $equal
-            ? ['%zoom_x_y' => $this->zoomX]
-            : ['%zoom_x' => $this->zoomX, '%zoom_y' => $this->zoomY]
+        return \strtr(
+            $tpl,
+            $equal
+                ? ['%zoom_x_y' => $this->zoomX]
+                : ['%zoom_x' => $this->zoomX, '%zoom_y' => $this->zoomY]
         );
     }
 }
diff --git a/src/Providers/ImgProxy/Security.php b/src/Providers/ImgProxy/Security.php
index d4146f1..7f54165 100644
--- a/src/Providers/ImgProxy/Security.php
+++ b/src/Providers/ImgProxy/Security.php
@@ -1,6 +1,7 @@
 <?php
 
 namespace SymfonyImageProxyBundle\Providers\ImgProxy;
+
 class Security
 {
     private string $key;
@@ -8,7 +9,7 @@ class Security
 
     public function __construct(string $key, string $salt, private readonly int $size = 32)
     {
-        if (\mb_strlen($key) > 0) {
+        if ($key !== '') {
             try {
                 $this->key = \pack('H', \mb_strtoupper($key));
             } catch (\Throwable $e) {
@@ -16,7 +17,7 @@ public function __construct(string $key, string $salt, private readonly int $siz
             }
         }
 
-        if (\mb_strlen($salt) > 0) {
+        if ($salt !== '') {
             try {
                 $this->salt = \pack('H', \mb_strtoupper($salt));
             } catch (\Throwable $e) {
diff --git a/src/Providers/Thumbor/Security.php b/src/Providers/Thumbor/Security.php
index 225997f..a1494a1 100644
--- a/src/Providers/Thumbor/Security.php
+++ b/src/Providers/Thumbor/Security.php
@@ -4,5 +4,4 @@
 
 class Security
 {
-
 }