Merge rewrite

.github/workflows/php-workshop.yml

@@ -21,7 +21,7 @@ jobs:
         uses: shivammathur/setup-php@v2
         with:
           php-version: ${{ matrix.php }}
-          tools: composer:v2
+          tools: php-cs-fixer,composer:v2
           coverage: none
 
       - name: Install Dependencies

.gitignore

@@ -3,3 +3,5 @@
 program.php
 .phpunit.result.cache
 /build
+/vendor-bin/**/vendor/
+.php-cs-fixer.cache

.php-cs-fixer.php

@@ -0,0 +1,13 @@
+<?php
+
+$finder = (new PhpCsFixer\Finder())
+    ->in(__DIR__)
+    ->exclude('test/res')
+;
+
+return (new PhpCsFixer\Config())
+    ->setRules([
+        '@PER-CS2.0' => true,
+        'no_unused_imports' => true,
+    ])
+    ->setFinder($finder);