Update CS fixer to v3.0.0

.github/workflows/ci.yml

@@ -21,7 +21,7 @@ jobs:
       - name: PHP-CS-Fixer
         uses: docker://oskarstark/php-cs-fixer-ga
         with:
-          args: --diff-format=udiff --dry-run --show-progress=dots --using-cache=no --verbose .
+          args: --dry-run --show-progress=dots --using-cache=no --verbose .
 
   phpstan:
     name: PHPStan

.php-cs-fixer.dist.php

@@ -0,0 +1,48 @@
+<?php
+
+$config = new PhpCsFixer\Config();
+$config->setRiskyAllowed(true);
+$config->setRules([
+  // Rulesets
+  '@PSR2' => true,
+  '@PhpCsFixer' => true,
+  '@PhpCsFixer:risky' => true,
+  '@PHP56Migration:risky' => true,
+  '@PHPUnit57Migration:risky' => true,
+
+  // Additional rules
+  'fopen_flags' => true,
+  'linebreak_after_opening_tag' => true,
+  'native_constant_invocation' => true,
+  'native_function_invocation' => ['include' => ['@internal'], 'strict' => false],
+
+  // --- Diffs from @PhpCsFixer / @PhpCsFixer:risky ---
+
+  // This is the same as the default for the @PhpCsFixer ruleset, minus
+  // the following values: ['include', 'include_once', 'require',
+  // 'require_once']. We could enable them and remove this line after
+  // updating codegen for the `init.php` file to be compliant.
+  'blank_line_before_statement' => ['statements' => ['break', 'case', 'continue', 'declare', 'default', 'exit', 'goto', 'return', 'switch', 'throw', 'try']],
+
+  // This is just prettier / easier to read.
+  'concat_space' => ['spacing' => 'one'],
+
+  // This causes strange ordering with codegen'd classes. We might be
+  // able to enable this if we update codegen to output class elements
+  // in the correct order.
+  'ordered_class_elements' => false,
+
+  // Keep this disabled to avoid unnecessary diffs in PHPDoc comments of
+  // codegen'd classes.
+  'phpdoc_align' => false,
+
+  // This is a "risky" rule that causes a bug in our codebase.
+  // Specifically, in `StripeObject.updateAttributes` we construct new
+  // `StripeObject`s for metadata. We can't use `self` there because it
+  // needs to be a raw `StripeObject`.
+  'self_accessor' => false,
+
+  'visibility_required' => false,
+]);
+return $config;
+

composer.json

@@ -24,8 +24,8 @@
     "phpunit/phpunit": "^5.7",
     "php-coveralls/php-coveralls": "^2.1",
     "squizlabs/php_codesniffer": "^3.3",
-    "symfony/process": "~3.4",
-    "friendsofphp/php-cs-fixer": "2.17.1"
+    "symfony/process": "~5.0",
+    "friendsofphp/php-cs-fixer": "3.0.0"
   },
   "autoload": {
     "psr-4": {