Set up PHPStan

Author: axlon

.gitattributes

@@ -7,4 +7,5 @@ tests/ export-ignore
 .gitattributes export-ignore
 .gitignore export-ignore
 phpcs.xml.dist export-ignore
+phpstan.neon.dist export-ignore
 phpunit.xml.dist export-ignore

.github/workflows/phpstan.yml

@@ -0,0 +1,21 @@
+name: PHPStan
+
+on:
+  push:
+  pull_request:
+
+jobs:
+  phpstan:
+    runs-on: ubuntu-latest
+    name: PHPStan
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: 8.4
+      - name: Install Composer dependencies
+        run: composer install --no-interaction --no-progress --no-scripts
+      - name: Run PHPStan
+        run: ./vendor/bin/phpstan --no-progress

.gitignore

@@ -3,4 +3,5 @@
 vendor/
 composer.lock
 phpcs.xml
+phpstan.neon
 phpunit.xml

composer.json

@@ -24,6 +24,10 @@
     "require-dev": {
         "guzzlehttp/guzzle": "^7.8",
         "orchestra/testbench": "^8.34 || ^9.12 || ^10.1",
+        "phpstan/extension-installer": "^1.4",
+        "phpstan/phpstan": "^2.1",
+        "phpstan/phpstan-deprecation-rules": "^2.0",
+        "phpstan/phpstan-strict-rules": "^2.0",
         "phpunit/phpunit": "^10.5 || ^11.5",
         "slevomat/coding-standard": "^8.16",
         "symfony/var-exporter": "^6.4 || ^7.0"
@@ -40,7 +44,8 @@
     },
     "config": {
         "allow-plugins": {
-            "dealerdirect/phpcodesniffer-composer-installer": true
+            "dealerdirect/phpcodesniffer-composer-installer": true,
+            "phpstan/extension-installer": true
         },
         "sort-packages": true
     },