Add PHP CS Fixer

.editorconfig

@@ -0,0 +1,10 @@
+; top-most EditorConfig file
+root = true
+
+; Unix-style newlines
+[*]
+end_of_line = LF
+indent_style = space
+indent_size = 4
+trim_trailing_whitespace = true
+insert_final_newline = true

.gitattributes

@@ -1,6 +1,7 @@
 # .gitattributes
 tests/ export-ignore
 .travis.yml export-ignore
+.php_cs export-ignore
 
 # Auto detect text files and perform LF normalization
 * text=auto

.gitignore

@@ -1,3 +1,4 @@
 /vendor/
 /composer.phar
 /composer.lock
+/.php_cs.cache

.php_cs

@@ -0,0 +1,45 @@
+<?php
+
+return PhpCsFixer\Config::create()
+    ->setRiskyAllowed(true)
+    ->setRules([
+        '@Symfony' => true,
+        '@Symfony:risky' => true,
+        'array_syntax' => [
+            'syntax' => 'short'
+        ],
+        'combine_consecutive_unsets' => true,
+        'heredoc_to_nowdoc' => true,
+        'no_extra_consecutive_blank_lines' => [
+        'break',
+            'continue',
+            'extra',
+            'return',
+            'throw',
+            'use',
+            'parenthesis_brace_block',
+            'square_brace_block',
+            'curly_brace_block'
+        ],
+        'no_unreachable_default_argument_value' => true,
+        'no_useless_else' => true,
+        'no_useless_return' => true,
+        'ordered_class_elements' => true,
+        'ordered_imports' => true,
+        'php_unit_strict' => true,
+        'phpdoc_order' => true,
+        // 'psr4' => true,
+        'strict_comparison' => true,
+        'strict_param' => true,
+        'concat_space' => [
+            'spacing' => 'one'
+        ],
+    ])
+    ->setFinder(
+        PhpCsFixer\Finder::create()
+            ->exclude([
+                'vendor',
+            ])
+            ->in(__DIR__)
+    )
+;

.travis.yml

@@ -15,6 +15,7 @@ before_script:
 
 script:
   - mkdir -p build/logs
+  - php vendor/bin/php-cs-fixer fix --verbose --dry-run
   - php vendor/bin/simple-phpunit -v --coverage-clover build/logs/clover.xml
 
 after_script:

composer.json

@@ -18,6 +18,7 @@
     },
     "require-dev": {
         "symfony/phpunit-bridge": "^4.2",
-        "php-coveralls/php-coveralls": "^2.0"
+        "php-coveralls/php-coveralls": "^2.0",
+        "friendsofphp/php-cs-fixer": "~2.13"
     }
 }

src/PiwikTwigExtension.php

@@ -3,15 +3,15 @@
 namespace PiwikTwigExtension;
 
 use InvalidArgumentException;
-use Twig_Extension;
-use Twig_SimpleFunction;
+use Twig\Extension\AbstractExtension;
+use Twig\TwigFunction;
 
 /**
  * Twig extension for Piwik integration.
  *
  * @author Matthieu Napoli <matthieu@mnapoli.fr>
  */
-class PiwikTwigExtension extends Twig_Extension
+class PiwikTwigExtension extends AbstractExtension
 {
     /**
      * @var string|null
@@ -45,7 +45,7 @@ public function getName()
     public function getFunctions()
     {
         return [
-            new Twig_SimpleFunction(
+            new TwigFunction(
                 'piwik',
                 [$this, 'generatePiwikTrackerCode'],
                 ['is_safe' => ['html']]
@@ -56,21 +56,22 @@ public function getFunctions()
     /**
      * @param string|null $piwikHost
      * @param string|null $siteId
+     *
      * @return string
      */
     public function generatePiwikTrackerCode($piwikHost = null, $siteId = null)
     {
-        if (! $this->enabled) {
+        if (!$this->enabled) {
             return '';
         }
 
         $piwikHost = $piwikHost ?: $this->piwikHost;
         $siteId = $siteId ?: $this->siteId;
 
-        if ($piwikHost === null) {
+        if (null === $piwikHost) {
             throw new InvalidArgumentException('No Piwik host was configured or given to generate the tracker code');
         }
-        if ($siteId === null) {
+        if (null === $siteId) {
             throw new InvalidArgumentException('No Piwik site ID was configured or given to generate the tracker code');
         }