php versions

Author: afk11

.github/workflows/test.yml

@@ -8,6 +8,10 @@ env:
 jobs:
   test:
     runs-on: ubuntu-18.04
+    strategy:
+      matrix:
+        operating-system: [ubuntu-latest]
+        php-versions: ['7.2', '7.3', '7.4']
     steps:
       - name: Checkout code
         uses: actions/checkout@v2