diff --git a/hook.php b/hook.php
index c7c5983..f6751d5 100644
--- a/hook.php
+++ b/hook.php
@@ -624,12 +624,11 @@ function plugin_example_uninstall()
     ProfileRight::deleteProfileRights([Example::$rightname]);
 
     $notif   = new Notification();
-    $options = ['itemtype' => 'Ticket',
-        'event'            => 'plugin_example',
-        'FIELDS'           => 'id'];
-    foreach ($DB->request('glpi_notifications', $options) as $data) {
-        $notif->delete($data);
-    }
+    $notif->deleteByCriteria([
+        'itemtype' => 'Ticket',
+        'event'    => 'plugin_example',
+        'FIELDS'   => 'id',
+    ]);
     // Old version tables
     if ($DB->tableExists('glpi_dropdown_plugin_example')) {
         $query = 'DROP TABLE `glpi_dropdown_plugin_example`';
diff --git a/phpstan.neon b/phpstan.neon
index 8cf33ad..c5f3953 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -1,6 +1,9 @@
+includes:
+    - ../../vendor/glpi-project/phpstan-glpi/extension.neon
+    - ../../vendor/phpstan/phpstan-deprecation-rules/rules.neon
+    - ../../vendor/thecodingmachine/phpstan-safe-rule/phpstan-safe-rule.neon
+
 parameters:
-    parallel:
-        maximumNumberOfProcesses: 2
     level: 5
     paths:
         - front
@@ -10,10 +13,12 @@ parameters:
         - setup.php
         - stat.php
     scanDirectories:
-        - ../../inc
         - ../../src
-        - ../../front
     bootstrapFiles:
         - ../../stubs/glpi_constants.php
         - ../../vendor/autoload.php
-
+        - setup.php
+    treatPhpDocTypesAsCertain: false
+    ignoreErrors:
+        - message: "#.*always true#"
+        - message: "#Unreachable statement#"
diff --git a/report.php b/report.php
index 47251ef..cee979a 100644
--- a/report.php
+++ b/report.php
@@ -28,6 +28,8 @@
  * -------------------------------------------------------------------------
  */
 
+use function Safe\define;
+
 // ----------------------------------------------------------------------
 // Original Author of file:
 // Purpose of file:
diff --git a/setup.php b/setup.php
index 7a24a49..2cc0d0f 100644
--- a/setup.php
+++ b/setup.php
@@ -39,6 +39,8 @@ use GlpiPlugin\Example\Profile;
 use GlpiPlugin\Example\RuleTestCollection;
 use GlpiPlugin\Example\Showtabitem;
 
+use function Safe\define;
+
 define('PLUGIN_EXAMPLE_VERSION', '0.1.0');
 
 // Minimal GLPI version, inclusive
diff --git a/src/Document.php b/src/Document.php
index fc81200..493bbd0 100644
--- a/src/Document.php
+++ b/src/Document.php
@@ -57,8 +57,17 @@
 
 namespace GlpiPlugin\Example;
 
+use Glpi\Exception\Http\NotFoundHttpException;
+use Glpi\Exception\Http\HttpException;
 use Document as GlpiDocument;
 
+use function Safe\filemtime;
+use function Safe\filesize;
+use function Safe\fopen;
+use function Safe\fread;
+use function Safe\preg_match;
+use function Safe\set_time_limit;
+
 class Document extends GlpiDocument
 {
     /**
@@ -142,8 +151,7 @@ class Document extends GlpiDocument
 
         // Ensure the file exists
         if (!file_exists($streamSource) || !is_file($streamSource)) {
-            header('HTTP/1.0 404 Not Found');
-            exit(0);
+            throw new NotFoundHttpException();
         }
 
         // Download range defaults to the full file
@@ -157,8 +165,7 @@ class Document extends GlpiDocument
         // Open the file
         $fileHandle = @fopen($streamSource, 'rb');
         if (!$fileHandle) {
-            header('HTTP/1.0 500 Internal Server Error');
-            exit(0);
+            throw new HttpException(500, 'Internal Server Error');
         }
 
         // set range if specified by the client
@@ -174,8 +181,7 @@ class Document extends GlpiDocument
         // seek to the begining of the range
         $currentPosition = $begin;
         if (fseek($fileHandle, $begin, SEEK_SET) < 0) {
-            header('HTTP/1.0 500 Internal Server Error');
-            exit(0);
+            throw new HttpException(500, 'Internal Server Error');
         }
 
         // send headers to ensure the client is able to detect a corrupted download
@@ -206,9 +212,8 @@ class Document extends GlpiDocument
             // allow a few seconds to send a few KB.
             set_time_limit(10);
             $content = fread($fileHandle, min(1024 * 16, $end - $currentPosition + 1));
-            if ($content === false) {
-                header('HTTP/1.0 500 Internal Server Error', true); // Replace previously sent headers
-                exit(0);
+            if (empty($content)) {
+                throw new HttpException(500, 'Internal Server Error');
             } else {
                 print $content;
             }
@@ -217,6 +222,6 @@ class Document extends GlpiDocument
         }
 
         // End now to prevent any unwanted bytes
-        exit(0);
+        return;
     }
 }
diff --git a/src/Example.php b/src/Example.php
index 23e3df8..00b0b42 100644
--- a/src/Example.php
+++ b/src/Example.php
@@ -49,6 +49,8 @@ use Preference;
 use Session;
 use Supplier;
 
+use function Safe\strtotime;
+
 // Class of the defined type
 class Example extends CommonDBTM
 {
diff --git a/stat.php b/stat.php
index cdf05c9..001f441 100644
--- a/stat.php
+++ b/stat.php
@@ -28,6 +28,8 @@
  * -------------------------------------------------------------------------
  */
 
+use function Safe\define;
+
 // ----------------------------------------------------------------------
 // Original Author of file:
 // Purpose of file: