Add PHP version matrix to GitHub Actions

.github/workflows/php.yml

@@ -11,11 +11,22 @@ permissions:
 
 jobs:
   build:
-
     runs-on: ubuntu-latest
 
+    strategy:
+      matrix:
+        php-versions: ['7.4', '8.0', '8.1', '8.2', '8.3']
+
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
+
+    - name: Set PHP version
+      uses: shivammathur/setup-php@v2
+      with:
+        php-version: ${{ matrix.php-versions }}
+
+    - name: Check PHP version
+      run: php -v
 
     - name: Validate composer.json and composer.lock
       run: composer validate --strict
@@ -32,8 +43,5 @@ jobs:
     - name: Install dependencies
       run: composer install --prefer-dist --no-progress
 
-    # Add a test script to composer.json, for instance: "test": "vendor/bin/phpunit"
-    # Docs: https://getcomposer.org/doc/articles/scripts.md
-
     - name: Run test suite
       run: composer test