Github workflow

.github/workflows/phpunit.yml

@@ -0,0 +1,34 @@
+name: PHPUnit
+
+on: [push, pull_request]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        php: ['7.4', '8.0', '8.1', '8.2', '8.3']
+      fail-fast: false
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php }}
+          tools: composer:v2
+
+      - name: Validate composer.json
+        run: composer validate
+
+      - name: Lint PHP
+        run: |
+          find . -name '*.php' -not -path './vendor/*' -print0 | xargs -0 -n1 -P4 php -dxdebug.mode=off -l
+
+      - name: Install dependencies
+        run: composer install --prefer-dist --no-progress
+
+      - name: Run test suite
+        run: composer run-script phpunit