Update coding standard

.github/workflows/diagnostics.yml

@@ -0,0 +1,75 @@
+name: Code Quality Diagnostics
+
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+      - develop
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    name: PHP ${{ matrix.php }}
+
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - php: '7.4'
+            phpcq_install: 'install'
+            phpcq_flags: ''
+          - php: '8.0'
+            phpcq_install: 'update'
+            phpcq_flags: ''
+          - php: '8.1'
+            phpcq_install: 'update'
+            phpcq_flags: ''
+
+    steps:
+      - name: Pull source
+        uses: actions/checkout@v2
+
+      - name: Setup PHP with PECL extension
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php }}
+          coverage: xdebug2
+
+      - name: Cache composer cache directory
+        uses: actions/cache@v1
+        env:
+          cache-name: composer-cache-dir-${{ matrix.php }}
+        with:
+          path: ~/.cache/composer
+          key: ${{ runner.os }}-build-${{ env.cache-name }}
+
+      - name: Install composer dependencies
+        run: composer install
+
+      - name: Cache vendor directory of phpcq tool runner
+        uses: actions/cache@v1
+        env:
+          cache-name: vendor-${{ matrix.php }}
+        with:
+          path: $GITHUB_WORKSPACE/vendor
+          key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('**/composer.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-build-${{ env.cache-name }}-
+
+      - name: Update phpcq
+        run: $GITHUB_WORKSPACE/vendor/bin/phpcq self-update --unsigned
+
+      - name: Install phpcq toolchain
+        run: $GITHUB_WORKSPACE/vendor/bin/phpcq ${{ matrix.phpcq_install }} -v
+
+      - name: Run tests
+        run: $GITHUB_WORKSPACE/vendor/bin/phpcq run -o github-action -o default ${{ matrix.phpcq_flags }} -v
+
+      - name: Upload build directory to artifact
+        uses: actions/upload-artifact@v2
+        if: ${{ success() }} || ${{ failure() }}
+        with:
+          name: phpcq-builds-php-${{ matrix.php }}
+          path: .phpcq/build/