Lint against all supported PHP versions

.github/workflows/php.yml

@@ -2,9 +2,9 @@ name: PHP Check
 
 on:
   push:
-   branches:
-      - '*'
-  pull_request:
+    branches:
+      - release-2.1
+    pull_request:
 
 jobs:
   build:
@@ -23,7 +23,7 @@ jobs:
 
     - name: Install dependencies
       if: steps.composer-cache.outputs.cache-hit != 'true'
-      run: composer install --prefer-dist --no-progress --no-suggest
+      run: composer install --prefer-dist --no-progress --ansi
 
     - run: php -v
 
@@ -37,5 +37,33 @@ jobs:
         php ./vendor/simplemachines/build-tools/check-smf-languages.php
         php ./vendor/simplemachines/build-tools/check-version.php
 
+  lint:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        php: [ 7.0, 7.1, 7.2, 7.3, 7.4, 8.0 ]
+
+    name: PHP ${{ matrix.php }} Syntax Check
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Setup PHP ${{ matrix.php }}
+      uses: shivammathur/setup-php@v2
+      with:
+        php-version: ${{ matrix.php }}
+        coverage: none
+
+    - name: Cache Composer packages
+      id: composer-cache
+      uses: actions/cache@v2
+      with:
+        path: vendor
+        key: ${{ runner.os }}-php-${{ hashFiles('**/composer.lock') }}
+        restore-keys: ${{ runner.os }}-php-
+
+    - name: Install dependencies
+      if: steps.composer-cache.outputs.cache-hit != 'true'
+      run: composer install --prefer-dist --no-progress --ansi
+
     - name: Lint PHP files
-      run: vendor/bin/phplint . --exclude=vendor -w
+      run: vendor/bin/phplint -w --exclude .git --exclude vendor --ansi .

composer.json

@@ -10,5 +10,10 @@
     "prefer-stable": true,
     "require-dev": {
         "simplemachines/build-tools": "dev-master"
+    },
+    "config": {
+        "platform": {
+            "php": "7.0.2"
+        }
     }
 }