diff --git a/composer.json b/composer.json
index 616da88..8116aae 100644
--- a/composer.json
+++ b/composer.json
@@ -21,7 +21,7 @@
         "cbschuld/browser.php": "^1.9.6",
         "endroid/qr-code": "^4 || ^5.1",
         "phpoffice/phpspreadsheet": "^2.2 || ^3.3",
-        "open-dxp/opendxp": "^1.1.2",
+        "open-dxp/opendxp": "^1.2.0",
         "symfony/webpack-encore-bundle": "^2.1.1"
     },
     "require-dev": {
diff --git a/src/Controller/Admin/DataObject/ClassController.php b/src/Controller/Admin/DataObject/ClassController.php
index 0ee08ad..a8e1237 100644
--- a/src/Controller/Admin/DataObject/ClassController.php
+++ b/src/Controller/Admin/DataObject/ClassController.php
@@ -21,6 +21,7 @@
 use OpenDxp\Bundle\AdminBundle\Event\AdminEvents;
 use OpenDxp\Controller\KernelControllerEventInterface;
 use OpenDxp\Db;
+use OpenDxp\Helper\FileSystemHelper;
 use OpenDxp\Logger;
 use OpenDxp\Model\Asset;
 use OpenDxp\Model\DataObject;
@@ -1722,17 +1723,17 @@ public function getIconsAction(Request $request, EventDispatcherInterface $event
         }
 
         if ($type === null) {
-            $classIcons = rscandir($iconDir . '/object-icons/');
-            $colorIcons = rscandir($iconDir . '/flat-color-icons/');
-            $twemoji = rscandir($iconDir . '/twemoji/');
+            $classIcons = FileSystemHelper::scanDirectory($iconDir . '/object-icons/');
+            $colorIcons = FileSystemHelper::scanDirectory($iconDir . '/flat-color-icons/');
+            $twemoji = FileSystemHelper::scanDirectory($iconDir . '/twemoji/');
             $icons = [...$classIcons, ...$colorIcons, ...$twemoji];
         } else {
             $icons = match($type) {
-                'color' => rscandir($iconDir . '/flat-color-icons/'),
-                'white' => rscandir($iconDir . '/flat-white-icons/'),
+                'color' => FileSystemHelper::scanDirectory($iconDir . '/flat-color-icons/'),
+                'white' => FileSystemHelper::scanDirectory($iconDir . '/flat-white-icons/'),
                 'twemoji-1', 'twemoji-2', 'twemoji-3',
                 'twemoji_variants-1', 'twemoji_variants-2', 'twemoji_variants-3'
-                => rscandir($iconDir . '/twemoji/'),
+                => FileSystemHelper::scanDirectory($iconDir . '/twemoji/'),
                 default => [],
             };
         }
diff --git a/src/Controller/Admin/DataObject/ClassificationstoreController.php b/src/Controller/Admin/DataObject/ClassificationstoreController.php
index a18b15a..02856b4 100644
--- a/src/Controller/Admin/DataObject/ClassificationstoreController.php
+++ b/src/Controller/Admin/DataObject/ClassificationstoreController.php
@@ -20,6 +20,7 @@
 use OpenDxp\Bundle\AdminBundle\Controller\AdminAbstractController;
 use OpenDxp\Controller\KernelControllerEventInterface;
 use OpenDxp\Db;
+use OpenDxp\Helper\ArrayHelper;
 use OpenDxp\Model\DataObject;
 use OpenDxp\Model\DataObject\ClassDefinition\Data\LayoutDefinitionEnrichmentInterface;
 use OpenDxp\Model\DataObject\Classificationstore;
@@ -1391,7 +1392,7 @@ public function storetreeAction(Request $request): JsonResponse
     public function getPageAction(Request $request): JsonResponse
     {
         $tableSuffix = $request->get('table');
-        if (!in_arrayi($tableSuffix, ['keys', 'groups'])) {
+        if (!ArrayHelper::inArrayCaseInsensitive($tableSuffix, ['keys', 'groups'])) {
             $tableSuffix = 'keys';
         }
 
@@ -1409,11 +1410,11 @@ public function getPageAction(Request $request): JsonResponse
             $sortDir = 'ASC';
         }
 
-        if (!in_arrayi($sortDir, ['DESC', 'ASC'])) {
+        if (!ArrayHelper::inArrayCaseInsensitive($sortDir, ['DESC', 'ASC'])) {
             $sortDir = 'DESC';
         }
 
-        if (!in_arrayi($sortKey, ['name', 'title', 'description', 'id', 'type', 'creationDate', 'modificationDate', 'enabled', 'parentId', 'storeId'])) {
+        if (!ArrayHelper::inArrayCaseInsensitive($sortKey, ['name', 'title', 'description', 'id', 'type', 'creationDate', 'modificationDate', 'enabled', 'parentId', 'storeId'])) {
             $sortKey = 'name';
         }
 
diff --git a/src/Controller/Admin/IndexController.php b/src/Controller/Admin/IndexController.php
index beb684d..ca2b7cc 100644
--- a/src/Controller/Admin/IndexController.php
+++ b/src/Controller/Admin/IndexController.php
@@ -320,8 +320,8 @@ private function getInstanceId(): string
     protected function addSystemVarSettings(array &$settings): static
     {
         // upload limit
-        $max_upload = filesize2bytes(ini_get('upload_max_filesize') . 'B');
-        $max_post = filesize2bytes(ini_get('post_max_size') . 'B');
+        $max_upload = OpenDxp\Helper\FileSystemHelper::filesizeToBytes(ini_get('upload_max_filesize') . 'B');
+        $max_post = OpenDxp\Helper\FileSystemHelper::filesizeToBytes(ini_get('post_max_size') . 'B');
         $upload_mb = min($max_upload, $max_post) ?: $max_upload;
 
         $settings['upload_max_filesize'] = (int) $upload_mb;
diff --git a/src/Controller/Admin/MiscController.php b/src/Controller/Admin/MiscController.php
index d3777f6..a74fb22 100644
--- a/src/Controller/Admin/MiscController.php
+++ b/src/Controller/Admin/MiscController.php
@@ -23,6 +23,7 @@
 use OpenDxp\Bundle\AdminBundle\Tool as AdminTool;
 use OpenDxp\Config;
 use OpenDxp\Controller\Config\ControllerDataProvider;
+use OpenDxp\Helper\FileSystemHelper;
 use OpenDxp\Localization\LocaleServiceInterface;
 use OpenDxp\Tool;
 use OpenDxp\Tool\Storage;
@@ -272,9 +273,9 @@ public function iconListAction(Request $request, ?Profiler $profiler): Response
         $extraInfo = null;
 
         $icons = match ($type) {
-            'color' => rscandir($iconDir . '/flat-color-icons/'),
-            'white' => rscandir($iconDir . '/flat-white-icons/'),
-            'twemoji' => rscandir($iconDir . '/twemoji/'),
+            'color' => FileSystemHelper::scanDirectory($iconDir . '/flat-color-icons/'),
+            'white' => FileSystemHelper::scanDirectory($iconDir . '/flat-white-icons/'),
+            'twemoji' => FileSystemHelper::scanDirectory($iconDir . '/twemoji/'),
             'flags' => $this->getFlags(),
             default => []
         };
diff --git a/src/Controller/Admin/SettingsController.php b/src/Controller/Admin/SettingsController.php
index 5ec90ae..7ad5681 100644
--- a/src/Controller/Admin/SettingsController.php
+++ b/src/Controller/Admin/SettingsController.php
@@ -24,6 +24,7 @@
 use OpenDxp\Cache\Symfony\CacheClearer;
 use OpenDxp\Db;
 use OpenDxp\Event\SystemEvents;
+use OpenDxp\Helper\FileSystemHelper;
 use OpenDxp\Helper\StopMessengerWorkersTrait;
 use OpenDxp\Localization\LocaleServiceInterface;
 use OpenDxp\Logger;
@@ -586,7 +587,7 @@ public function clearTemporaryFilesAction(EventDispatcherInterface $eventDispatc
         Tool\Storage::get('asset_cache')->deleteDirectory('/');
 
         // system files
-        recursiveDelete(OPENDXP_SYSTEM_TEMP_DIRECTORY, false);
+        FileSystemHelper::recursiveDelete(OPENDXP_SYSTEM_TEMP_DIRECTORY, false);
 
         $eventDispatcher->dispatch(new GenericEvent(), SystemEvents::CACHE_CLEAR_TEMPORARY_FILES);
 
diff --git a/src/DependencyInjection/Configuration.php b/src/DependencyInjection/Configuration.php
index 3336496..e462e03 100644
--- a/src/DependencyInjection/Configuration.php
+++ b/src/DependencyInjection/Configuration.php
@@ -363,7 +363,7 @@ private function addAdminSessionAttributeBags(ArrayNodeDefinition $adminNode): v
                             ->useAttributeAsKey('name')
                             ->beforeNormalization()
                                 ->ifArray()->then(function ($v) use ($normalizers) {
-                                    if (isAssocArray($v)) {
+                                    if (!array_is_list($v)) {
                                         return $normalizers['assoc']($v);
                                     }
 
diff --git a/src/EventListener/UsageStatisticsListener.php b/src/EventListener/UsageStatisticsListener.php
index 093db62..dabf5d7 100644
--- a/src/EventListener/UsageStatisticsListener.php
+++ b/src/EventListener/UsageStatisticsListener.php
@@ -18,6 +18,7 @@
 
 use OpenDxp\Bundle\CoreBundle\EventListener\Traits\OpenDxpContextAwareTrait;
 use OpenDxp\Config;
+use OpenDxp\Helper\StringHelper;
 use OpenDxp\Http\Request\Resolver\OpenDxpContextResolver;
 use OpenDxp\Security\User\TokenStorageUserResolver;
 use Psr\Log\LoggerAwareTrait;
@@ -85,10 +86,10 @@ protected function getParams(Request $request): array
         $requestParams = [...$request->query->all(), ...$request->request->all()];
 
         foreach ($requestParams as $key => $value) {
-            if (is_json($value)) {
+            if (StringHelper::isValidJson($value)) {
                 $value = json_decode($value);
                 if (is_array($value)) {
-                    array_walk_recursive($value, function (&$item, $key): void {
+                    array_walk_recursive($value, static function (&$item, $key): void {
                         if (str_contains((string)$key, 'pass')) {
                             $item = '*************';
                         }
diff --git a/src/Security/ContentSecurityPolicyHandler.php b/src/Security/ContentSecurityPolicyHandler.php
index c0cd0ac..f81bd2e 100644
--- a/src/Security/ContentSecurityPolicyHandler.php
+++ b/src/Security/ContentSecurityPolicyHandler.php
@@ -17,6 +17,7 @@
 namespace OpenDxp\Bundle\AdminBundle\Security;
 
 use OpenDxp\Config;
+use OpenDxp\Helper\StringHelper;
 use Psr\Log\LoggerAwareInterface;
 use Psr\Log\LoggerAwareTrait;
 use Symfony\Component\OptionsResolver\OptionsResolver;
@@ -145,7 +146,7 @@ public function getNonceHtmlAttribute(): string
     private function getNonce(): string
     {
         if (!$this->nonce) {
-            $this->nonce = generateRandomSymfonySecret();
+            $this->nonce = StringHelper::generateRandomSymfonySecret();
         }
 
         return $this->nonce;
diff --git a/src/Security/CsrfProtectionHandler.php b/src/Security/CsrfProtectionHandler.php
index a3ca049..b95cd66 100644
--- a/src/Security/CsrfProtectionHandler.php
+++ b/src/Security/CsrfProtectionHandler.php
@@ -16,6 +16,7 @@
 
 namespace OpenDxp\Bundle\AdminBundle\Security;
 
+use OpenDxp\Helper\StringHelper;
 use OpenDxp\Tool\Session;
 use Psr\Log\LoggerAwareInterface;
 use Psr\Log\LoggerAwareTrait;
@@ -69,9 +70,9 @@ public function getCsrfToken(SessionInterface $session): ?string
 
     public function regenerateCsrfToken(SessionInterface $session, bool $force = true): void
     {
-        $this->csrfToken = Session::useBag($session, function (AttributeBagInterface $adminSession) use ($force) {
+        $this->csrfToken = Session::useBag($session, static function (AttributeBagInterface $adminSession) use ($force) {
             if ($force || !$adminSession->get('csrfToken')) {
-                $adminSession->set('csrfToken', sha1(generateRandomSymfonySecret()));
+                $adminSession->set('csrfToken', sha1(StringHelper::generateRandomSymfonySecret()));
             }
 
             return $adminSession->get('csrfToken');
diff --git a/src/Service/GridData/Asset.php b/src/Service/GridData/Asset.php
index 796d614..cddd4b1 100644
--- a/src/Service/GridData/Asset.php
+++ b/src/Service/GridData/Asset.php
@@ -53,7 +53,7 @@ public static function getData(Model\Asset $asset, ?array $fields = null, ?strin
                         $data[$field] = self::getPreviewThumbnail($asset, ['treepreview' => true, 'width' => 108, 'height' => 70, 'frame' => true]);
                     } elseif ($fieldDef[0] === 'size') {
                         $size = $asset->getFileSize();
-                        $data[$field] = formatBytes($size);
+                        $data[$field] = OpenDxp\Helper\FileSystemHelper::formatBytes($size);
                     }
                 } else {
                     if (isset($fieldDef[1])) {