Add php version sniff

.github/workflows/php-version-sniff.yml

@@ -0,0 +1,31 @@
+---
+name: PHP Version Compatibility
+
+on:
+  - push
+  - pull_request
+  # Allow manually triggering the workflow.
+  - workflow_dispatch
+
+# Cancels all previous workflow runs for the same branch that have not yet completed.
+concurrency:
+  # The concurrency group contains the workflow name and the branch name.
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  php-codesniffer:
+    strategy:
+      matrix:
+        php: [ '8.0', '8.1' ]
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: actions/checkout@v3
+      - uses: pipeline-components/php-codesniffer@master
+        with:
+          options: >-
+            -s 
+            --ignore='*vendor/*' 
+            --standard=PHPCompatibility
+            --extensions=php
+            --runtime-set testVersion ${{ matrix.php }}