diff --git a/composer.json b/composer.json
index 54fed37..c721d10 100644
--- a/composer.json
+++ b/composer.json
@@ -5,8 +5,11 @@
     "require-dev": {
         "friendsofphp/php-cs-fixer": "^3.75",
         "friendsoftwig/twigcs": "^6.1",
+        "glpi-project/phpstan-glpi": "^1.0",
         "glpi-project/tools": "^0.7.5",
-        "php-parallel-lint/php-parallel-lint": "^1.4"
+        "php-parallel-lint/php-parallel-lint": "^1.4",
+        "phpstan/phpstan": "^2.1",
+        "phpstan/phpstan-deprecation-rules": "^2.0"
     },
     "config": {
         "optimize-autoloader": true,
diff --git a/composer.lock b/composer.lock
index 7757887..6d41a2f 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "981190cd221bfc071af80a355f4b0b57",
+    "content-hash": "0b8145569965029789c21a725b504a22",
     "packages": [],
     "packages-dev": [
         {
@@ -565,6 +565,54 @@
             },
             "time": "2024-11-27T21:59:24+00:00"
         },
+        {
+            "name": "glpi-project/phpstan-glpi",
+            "version": "1.0.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/glpi-project/phpstan-glpi.git",
+                "reference": "432f7a10d221f60abdbd4ab4676dbd846a485df1"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/glpi-project/phpstan-glpi/zipball/432f7a10d221f60abdbd4ab4676dbd846a485df1",
+                "reference": "432f7a10d221f60abdbd4ab4676dbd846a485df1",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=7.4",
+                "phpstan/phpstan": "^2.1"
+            },
+            "require-dev": {
+                "friendsofphp/php-cs-fixer": "^3.75",
+                "php-parallel-lint/php-parallel-lint": "^1.4",
+                "phpstan/phpstan-phpunit": "^2.0",
+                "phpunit/phpunit": "^9.6"
+            },
+            "type": "phpstan-extension",
+            "extra": {
+                "phpstan": {
+                    "includes": [
+                        "rules.neon"
+                    ]
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "PHPStanGlpi\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "description": "PHPStan rules for GLPI.",
+            "support": {
+                "issues": "https://github.com/glpi-project/phpstan-glpi/issues",
+                "source": "https://github.com/glpi-project/phpstan-glpi/tree/1.0.0"
+            },
+            "time": "2025-06-24T11:45:31+00:00"
+        },
         {
             "name": "glpi-project/tools",
             "version": "0.7.5",
@@ -682,6 +730,111 @@
             },
             "time": "2024-03-27T12:14:49+00:00"
         },
+        {
+            "name": "phpstan/phpstan",
+            "version": "2.1.17",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/phpstan/phpstan.git",
+                "reference": "89b5ef665716fa2a52ecd2633f21007a6a349053"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/89b5ef665716fa2a52ecd2633f21007a6a349053",
+                "reference": "89b5ef665716fa2a52ecd2633f21007a6a349053",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.4|^8.0"
+            },
+            "conflict": {
+                "phpstan/phpstan-shim": "*"
+            },
+            "bin": [
+                "phpstan",
+                "phpstan.phar"
+            ],
+            "type": "library",
+            "autoload": {
+                "files": [
+                    "bootstrap.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "description": "PHPStan - PHP Static Analysis Tool",
+            "keywords": [
+                "dev",
+                "static analysis"
+            ],
+            "support": {
+                "docs": "https://phpstan.org/user-guide/getting-started",
+                "forum": "https://github.com/phpstan/phpstan/discussions",
+                "issues": "https://github.com/phpstan/phpstan/issues",
+                "security": "https://github.com/phpstan/phpstan/security/policy",
+                "source": "https://github.com/phpstan/phpstan-src"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/ondrejmirtes",
+                    "type": "github"
+                },
+                {
+                    "url": "https://github.com/phpstan",
+                    "type": "github"
+                }
+            ],
+            "time": "2025-05-21T20:55:28+00:00"
+        },
+        {
+            "name": "phpstan/phpstan-deprecation-rules",
+            "version": "2.0.3",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/phpstan/phpstan-deprecation-rules.git",
+                "reference": "468e02c9176891cc901143da118f09dc9505fc2f"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/phpstan/phpstan-deprecation-rules/zipball/468e02c9176891cc901143da118f09dc9505fc2f",
+                "reference": "468e02c9176891cc901143da118f09dc9505fc2f",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.4 || ^8.0",
+                "phpstan/phpstan": "^2.1.15"
+            },
+            "require-dev": {
+                "php-parallel-lint/php-parallel-lint": "^1.2",
+                "phpstan/phpstan-phpunit": "^2.0",
+                "phpunit/phpunit": "^9.6"
+            },
+            "type": "phpstan-extension",
+            "extra": {
+                "phpstan": {
+                    "includes": [
+                        "rules.neon"
+                    ]
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "PHPStan\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "description": "PHPStan rules for detecting usage of deprecated classes, methods, properties, constants and traits.",
+            "support": {
+                "issues": "https://github.com/phpstan/phpstan-deprecation-rules/issues",
+                "source": "https://github.com/phpstan/phpstan-deprecation-rules/tree/2.0.3"
+            },
+            "time": "2025-05-14T10:56:57+00:00"
+        },
         {
             "name": "psr/container",
             "version": "2.0.2",
diff --git a/front/popup.php b/front/popup.php
index a75896b..c5753bb 100644
--- a/front/popup.php
+++ b/front/popup.php
@@ -47,11 +47,6 @@ if (isset($_SESSION['glpipopup']['name'])) {
             Html::popHeader(__('Test rules engine'), $_SERVER['PHP_SELF']);
             include '../../../front/rulesengine.test.php';
             break;
-
-        case 'show_cache':
-            Html::popHeader(__('Cache information'), $_SERVER['PHP_SELF']);
-            include '../../../front/rule.cache.php';
-            break;
     }
     echo "<div class='center'><br><a href='javascript:window.close()'>" . __('Back') . '</a>';
     echo '</div>';
diff --git a/hook.php b/hook.php
index 7f3259a..0944f5c 100644
--- a/hook.php
+++ b/hook.php
@@ -350,7 +350,7 @@ function plugin_example_searchOptionsValues($options = [])
     switch ($table . '.' . $field) {
         case 'glpi_plugin_example_examples.serial':
             echo __('Not really specific - Use your own dropdown - Just for example', 'example');
-            GlpiDropdown::show(
+            Dropdown::show(
                 getItemTypeForTable($options['searchoption']['table']),
                 ['value'       => $options['value'],
                     'name'     => $options['name'],
@@ -729,6 +729,7 @@ function plugin_example_Status($param)
     // Do checks (no check for example)
     $ok = true;
     echo 'example plugin: example';
+
     if ($ok) {
         echo '_OK';
     } else {
diff --git a/phpstan.neon b/phpstan.neon
new file mode 100644
index 0000000..2006aa0
--- /dev/null
+++ b/phpstan.neon
@@ -0,0 +1,18 @@
+parameters:
+    parallel:
+        maximumNumberOfProcesses: 2
+    level: 5
+    paths:
+        - front
+        - src
+        - hook.php
+        - setup.php
+        - report.php
+    scanDirectories:
+        - ../../inc
+        - ../../src
+        - ../../front
+    bootstrapFiles:
+        - ../../stubs/glpi_constants.php
+        - ../../vendor/autoload.php
+
diff --git a/setup.php b/setup.php
index 553e8d4..1217545 100644
--- a/setup.php
+++ b/setup.php
@@ -250,9 +250,6 @@ function plugin_init_example()
 
     $PLUGIN_HOOKS['status']['example'] = 'plugin_example_Status';
 
-    // CSRF compliance : All actions must be done via POST and forms closed by Html::closeForm();
-    $PLUGIN_HOOKS[Hooks::CSRF_COMPLIANT]['example'] = true;
-
     $PLUGIN_HOOKS[Hooks::DISPLAY_CENTRAL]['example'] = 'plugin_example_display_central';
     $PLUGIN_HOOKS[Hooks::DISPLAY_LOGIN]['example']   = 'plugin_example_display_login';
     $PLUGIN_HOOKS[Hooks::INFOCOM]['example']         = 'plugin_example_infocom_hook';
@@ -267,11 +264,8 @@ function plugin_init_example()
     $PLUGIN_HOOKS[Hooks::PRE_ITEM_FORM]['example']  = [ItemForm::class, 'preItemForm'];
     $PLUGIN_HOOKS[Hooks::POST_ITEM_FORM]['example'] = [ItemForm::class, 'postItemForm'];
 
-    //TODO: remove check when GLPI 11.0.0 is released
-    if (version_compare(GLPI_VERSION, '11.0.0', 'ge')) {
-        $PLUGIN_HOOKS[Hooks::PRE_ITIL_INFO_SECTION]['example']  = [ItemForm::class, 'preSection'];
-        $PLUGIN_HOOKS[Hooks::POST_ITIL_INFO_SECTION]['example'] = [ItemForm::class, 'postSection'];
-    }
+    $PLUGIN_HOOKS[Hooks::PRE_ITIL_INFO_SECTION]['example']  = [ItemForm::class, 'preSection'];
+    $PLUGIN_HOOKS[Hooks::POST_ITIL_INFO_SECTION]['example'] = [ItemForm::class, 'postSection'];
 
     // Add new actions to timeline
     $PLUGIN_HOOKS[Hooks::TIMELINE_ACTIONS]['example'] = [
@@ -297,11 +291,8 @@ function plugin_init_example()
         ComputerModelFilter::class,
     ];
 
-    //TODO: remove check when GLPI 11.0.0 is released
-    if (version_compare(GLPI_VERSION, '11.0.0', 'ge')) {
-        // Icon in the impact analysis
-        $PLUGIN_HOOKS[Hooks::SET_ITEM_IMPACT_ICON]['example'] = 'plugin_example_set_impact_icon';
-    }
+    // Icon in the impact analysis
+    $PLUGIN_HOOKS[Hooks::SET_ITEM_IMPACT_ICON]['example'] = 'plugin_example_set_impact_icon';
 }
 
 
diff --git a/src/Config.php b/src/Config.php
index baf00b3..c6804d7 100644
--- a/src/Config.php
+++ b/src/Config.php
@@ -96,5 +96,6 @@ class Config extends CommonDBTM
             $config = new self();
             $config->showFormExample();
         }
+        return true;
     }
 }
diff --git a/src/Example.php b/src/Example.php
index f87efc3..eb2d8b0 100644
--- a/src/Example.php
+++ b/src/Example.php
@@ -35,14 +35,20 @@
 
 namespace GlpiPlugin\Example;
 
+use Central;
 use CommonDBTM;
 use CommonGLPI;
 use Computer;
 use DBmysql;
 use Html;
+use Item_Disk;
 use Log;
 use MassiveAction;
+use Notification;
+use Phone;
+use Preference;
 use Session;
+use Supplier;
 
 // Class of the defined type
 class Example extends CommonDBTM
@@ -168,7 +174,7 @@ class Example extends CommonDBTM
      *
      * @param $task Object of CronTask class for log / stat
      *
-     * @return interger
+     * @return int
      *    >0 : done
      *    <0 : to be run again (not finished)
      *     0 : nothing to do
@@ -212,33 +218,34 @@ class Example extends CommonDBTM
     public function getTabNameForItem(CommonGLPI $item, $withtemplate = 0)
     {
         if (!$withtemplate) {
-            switch ($item->getType()) {
-                case 'Profile':
-                    if ($item->getField('central')) {
-                        return __('Example', 'example');
-                    }
-                    break;
-
-                case 'Phone':
-                    if ($_SESSION['glpishow_count_on_tabs']) {
-                        return self::createTabEntry(
-                            __('Example', 'example'),
-                            countElementsInTable($this->getTable()),
-                        );
-                    }
-
+            if ($item instanceof Profile) {
+                if ($item->getField('central')) {
                     return __('Example', 'example');
+                }
 
-                case 'ComputerDisk':
-                case 'Supplier':
-                    return [1 => __('Test Plugin', 'example'),
-                        2     => __('Test Plugin 2', 'example')];
+            } elseif ($item instanceof Phone) {
+                if ($_SESSION['glpishow_count_on_tabs']) {
+                    return self::createTabEntry(
+                        __('Example', 'example'),
+                        countElementsInTable($this->getTable()),
+                    );
+                }
 
-                case 'Computer':
-                case 'Central':
-                case 'Preference':
-                case 'Notification':
-                    return [1 => __('Test Plugin', 'example')];
+                return __('Example', 'example');
+
+            } elseif ($item instanceof Item_Disk || $item instanceof Supplier) {
+                return [
+                    1 => __('Test Plugin', 'example'),
+                    2 => __('Test Plugin 2', 'example'),
+                ];
+
+            } elseif ($item instanceof Computer
+                    || $item instanceof Central
+                    || $item instanceof Preference
+                    || $item instanceof Notification) {
+                return [
+                    1 => __('Test Plugin', 'example'),
+                ];
             }
         }
 
@@ -247,53 +254,46 @@ class Example extends CommonDBTM
 
     public static function displayTabContentForItem(CommonGLPI $item, $tabnum = 1, $withtemplate = 0)
     {
-        switch ($item->getType()) {
-            case 'Phone':
-                echo __('Plugin Example on Phone', 'example');
-                break;
+        if ($item instanceof Phone) {
+            echo __('Plugin Example on Phone', 'example');
 
-            case 'Central':
-                echo __('Plugin central action', 'example');
-                break;
+        } elseif ($item instanceof Central) {
+            echo __('Plugin central action', 'example');
 
-            case 'Preference':
-                // Complete form display
-                $data = plugin_version_example();
+        } elseif ($item instanceof Preference) {
+            // Complete form display
+            $data = plugin_version_example();
 
-                echo "<form action='Where to post form'>";
-                echo "<table class='tab_cadre_fixe'>";
-                echo "<tr><th colspan='3'>" . $data['name'] . ' - ' . $data['version'];
-                echo '</th></tr>';
+            echo "<form action='Where to post form'>";
+            echo "<table class='tab_cadre_fixe'>";
+            echo "<tr><th colspan='3'>" . $data['name'] . ' - ' . $data['version'];
+            echo '</th></tr>';
 
-                echo "<tr class='tab_bg_1'><td>Name of the pref</td>";
-                echo '<td>Input to set the pref</td>';
+            echo "<tr class='tab_bg_1'><td>Name of the pref</td>";
+            echo '<td>Input to set the pref</td>';
 
-                echo "<td><input class='submit' type='submit' name='submit' value='submit'></td>";
-                echo '</tr>';
+            echo "<td><input class='submit' type='submit' name='submit' value='submit'></td>";
+            echo '</tr>';
 
-                echo '</table>';
-                echo '</form>';
-                break;
+            echo '</table>';
+            echo '</form>';
 
-            case 'Notification':
-                echo __('Plugin mailing action', 'example');
-                break;
+        } elseif ($item instanceof Notification) {
+            echo __('Plugin mailing action', 'example');
 
-            case 'ComputerDisk':
-            case 'Supplier':
-                if ($tabnum == 1) {
-                    echo __('First tab of Plugin example', 'example');
-                } else {
-                    echo __('Second tab of Plugin example', 'example');
-                }
-                break;
+        } elseif ($item instanceof Item_Disk || $item instanceof Supplier) {
+            if ($tabnum == 1) {
+                echo __('First tab of Plugin example', 'example');
+            } else {
+                echo __('Second tab of Plugin example', 'example');
+            }
 
-            default:
-                //TRANS: %1$s is a class name, %2$d is an item ID
-                printf(__('Plugin example CLASS=%1$s id=%2$d', 'example'), $item->getType(), $item->getField('id'));
-                break;
+        } else {
+            //TRANS: %1$s is a class name, %2$d is an item ID
+            printf(__('Plugin example CLASS=%1$s', 'example'), get_class($item));
         }
 
+
         return true;
     }
 
@@ -338,7 +338,7 @@ class Example extends CommonDBTM
      * @param $type position of the item in the time block (in, through, begin or end)
      * @param $complete complete display (more details)
      *
-     * @return Nothing (display function)
+     * @return void (display function)
      **/
     public static function displayPlanningItem(array $val, $who, $type = '', $complete = 0)
     {
@@ -491,7 +491,7 @@ class Example extends CommonDBTM
     public static function generateLinkContents($link, CommonDBTM $item, bool $safe_url = true)
     {
         if (strstr($link, '[EXAMPLE_ID]')) {
-            $link = str_replace('[EXAMPLE_ID]', $item->getID(), $link);
+            $link = str_replace('[EXAMPLE_ID]', (string) $item->getID(), $link);
 
             return [$link];
         }