Create GitHub action workflow

Author: devinmatte

.github/workflows/php.yml

@@ -0,0 +1,24 @@
+name: PHP Composer
+
+on:
+  push:
+    branches: [ master, develop ]
+  pull_request:
+    branches: [ master, develop ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Validate composer.json and composer.lock
+      run: composer validate
+
+    - name: Install dependencies
+      run: composer install --prefer-dist --no-progress --no-suggest
+    
+    - name: Check PHP Syntax
+      run: if find . -name "*.php" ! -path "./vendor/*" -exec php -l {} 2>&1 \; | grep "syntax error, unexpected"; then exit 1; fi