ci: add phpstan, replace php-cs-fixer with php codesniffer

Author: dannyvankooten

.github/workflows/build.yml

@@ -0,0 +1,28 @@
+name: Build
+
+on:
+  - pull_request
+  - push
+
+jobs:
+  tests:
+    runs-on: "ubuntu-latest"
+    strategy:
+      matrix:
+        php-versions: ['8.2', '8.3', 'highest']
+    steps:
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php-versions }}
+
+      - name: "Checkout"
+        uses: "actions/checkout@v6"
+
+      - name: "Install dependencies with Composer"
+        uses: "ramsey/composer-install@v3"
+
+      - run: "composer run check-syntax"
+      - run: "composer run check-codestyle"
+      - run: "composer run static-analysis"
+      - run: "composer run test"

.github/workflows/php-check-syntax.yaml

@@ -1,7 +1,9 @@
 {
   "name": "ibericode/vat",
   "description": "PHP library for dealing with EU VAT",
-  "keywords": ["vat"],
+  "keywords": [
+    "vat"
+  ],
   "license": "MIT",
   "authors": [
     {
@@ -16,7 +18,8 @@
   },
   "require-dev": {
     "phpunit/phpunit": "^11.1",
-    "friendsofphp/php-cs-fixer": "^3.54"
+    "phpstan/phpstan": "^2.1",
+    "squizlabs/php_codesniffer": "^4.0"
   },
   "autoload": {
     "psr-4": {
@@ -37,6 +40,15 @@
     "ext-soap": "Needed to support VIES VAT number validation"
   },
   "scripts": {
-    "check-syntax": "find . -name '*.php' -not -path './vendor/*' -print0 | xargs -0 -n1 php --define error_reporting=-1 -l"
+    "check-syntax": "find . -name '*.php' -not -path './vendor/*' -print0 | xargs -0 -n1 php --define error_reporting=-1 -l",
+    "check-codestyle": "phpcs -sn",
+    "static-analysis": "phpstan",
+    "test": "phpunit",
+    "check-all": [
+      "@check-syntax",
+      "@check-codestyle",
+      "@static-analysis",
+      "@test"
+    ]
   }
 }

.github/workflows/php.yml

@@ -0,0 +1,4 @@
+parameters:
+	level: 5
+	paths:
+		- src