Merge pull request #2 from district09/feature/phpcompatibility

Add phpcompatibility checker

Author: MPParsley

README.md

@@ -137,3 +137,11 @@ Configure the paths to these files in PHPStorm:
   Set "Coding Standard" to "Custom" and set the path to `phpcs.qa-php.xml`.
 * Languages & Frameworks > PHP > Test Frameworks > Test Runner
   Set "Default configuration file" to `phpunit.qa-php.xml`.
+
+### PHP compatibility
+
+In order to check php compatibility you can use the phpcs `PHPCompatibility` sniff:
+
+```bash
+php vendor/bin/phpcs -p --ignore="*/vendor/*" --extensions=php,inc,module,install,theme --runtime-set testVersion 8.1 --standard=PHPCompatibility ./web/modules/contrib
+```

composer.json

@@ -45,6 +45,7 @@
         "enlightn/security-checker": "^1.4",
         "ergebnis/composer-normalize": "^2.8",
         "nette/neon": "^3.2",
+        "phpcompatibility/php-compatibility": "^9.3",
         "phpmd/phpmd": "^2.11",
         "phpro/grumphp-shim": "^1.1",
         "phpspec/prophecy": "^1.10",