[CI] Added phpstan

.github/workflows/ci.yaml

@@ -33,6 +33,9 @@ jobs:
             - name: Run code style check
               run: composer run-script check-cs -- --format=checkstyle | cs2pr
 
+            - name: Run PHPStan analysis
+              run: composer run-script phpstan
+
     tests:
         name: Unit tests
         runs-on: "ubuntu-20.04"

composer.json

@@ -46,21 +46,26 @@
         "ibexa/http-cache": "~4.6.0@dev",
         "phpspec/phpspec": "^7.1",
         "ibexa/code-style": "^1.0",
-        "friendsofphp/php-cs-fixer": "^3.0"
+        "friendsofphp/php-cs-fixer": "^3.0",
+        "phpstan/phpstan": "^2.0",
+        "phpstan/phpstan-phpunit": "^2.0",
+        "phpstan/phpstan-symfony": "^2.0"
     },
     "scripts": {
         "fix-cs": "php-cs-fixer fix --config=.php-cs-fixer.php -v --show-progress=dots",
         "check-cs": "@fix-cs --dry-run",
-        "test": "phpspec run --format=pretty"
+        "test": "phpspec run --format=pretty",
+        "phpstan": "phpstan analyse"
     },
     "extra": {
         "branch-alias": {
             "dev-main": "4.6.x-dev"
         }
     },
     "config": {
+        "sort-packages": true,
         "allow-plugins": {
-            "composer/package-versions-deprecated": true
+            "php-http/discovery": false
         }
     }
 }

phpstan.neon

@@ -0,0 +1,10 @@
+includes:
+    - phpstan-baseline.neon
+    - vendor/phpstan/phpstan-phpunit/extension.neon
+    - vendor/phpstan/phpstan-symfony/extension.neon
+
+parameters:
+    level: 8
+    paths:
+        - src
+        - tests