Add php-cs-fixer & fix code-style

Add php-cs-fixer & fix code-style

Author: akondas

.gitignore

@@ -1 +1,2 @@
 /vendor
+/.php_cs.cache

.php_cs

@@ -0,0 +1,28 @@
+<?php
+
+$finder = PhpCsFixer\Finder::create()
+    ->in(__DIR__.DIRECTORY_SEPARATOR.'src')
+;
+
+return PhpCsFixer\Config::create()
+    ->setRiskyAllowed(true)
+    ->setRules([
+        '@PHP71Migration' => true,
+        '@Symfony' => true,
+        'array_syntax' => ['syntax' => 'short'],
+        'no_superfluous_elseif' => true,
+        'no_superfluous_phpdoc_tags' => true,
+        'no_unreachable_default_argument_value' => true,
+        'no_useless_else' => true,
+        'no_useless_return' => true,
+        'ordered_imports' => [
+            'importsOrder' => null,
+            'sortAlgorithm' => 'alpha',
+        ],
+        'phpdoc_order' => true,
+        'yoda_style' => null,
+        // risky -->
+        'strict_param' => true,
+    ])
+    ->setFinder($finder)
+;

composer.json

@@ -8,7 +8,8 @@
     "require-dev": {
         "phpunit/phpunit": "^7.0",
         "phpstan/phpstan-phpunit": "^0.10",
-        "phpstan/phpstan": "^0.10.3"
+        "phpstan/phpstan": "^0.10.3",
+        "friendsofphp/php-cs-fixer": "^2.13"
     },
     "autoload": {
         "psr-4": {
@@ -28,9 +29,12 @@
         }
     ],
     "scripts": {
+        "check-cs": "php-cs-fixer fix --dry-run --diff",
+        "fix-cs": "php-cs-fixer fix",
         "tests": "phpunit",
         "stan": "phpstan analyse -l max -c ./phpstan.neon ./src ./tests",
         "check": [
+            "@check-cs",
             "@tests",
             "@stan"
         ]