Create reusable PHP test workflow

.github/workflows/php-test.yml

@@ -0,0 +1,50 @@
+name: PHP Tests
+
+on:
+  workflow_call:
+    inputs:
+      enable_phpstan:
+        description: 'Whether to enable PHPStan tests'
+        default: true
+        required: false
+        type: boolean
+      enable_phpunit:
+        description: 'Whether to enable PHPUnit tests'
+        default: true
+        required: false
+        type: boolean
+      php_versions:
+        description: 'The PHP versions to create builds for (as JSON string array)'
+        default: '["latest"]'
+        required: false
+        type: string
+
+jobs:
+  php-test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        php: ${{ fromJSON(inputs.php_versions) }}
+
+    name: Run PHP Tests
+    steps:
+      - name: PHPStan (PHP ${{ matrix.php }})
+        if: ${{ inputs.enable_phpstan }}
+        id: phpstan
+        uses: php-actions/phpstan@v3
+        with:
+          configuration: phpstan.neon
+          memory_limit: 512M
+          php_version: ${{ matrix.php }}
+          version: composer
+
+      - name: PHPUnit (PHP ${{ matrix.php }})
+        if: ${{ inputs.enable_phpunit }}
+        id: phpunit
+        uses: php-actions/phpstan@v3
+        with:
+          version: composer
+          php_version: ${{ matrix.php }}
+          configuration: phpunit.xml.dist
+        env: 
+          APP_ENV: test