php 5.4+ requirement

Author: EmanueleMinotto

src/Bridge/FormFactory/ConsoleFormWithDefaultValuesAndOptionsFactory.php

@@ -67,7 +67,7 @@ public function create($formType, InputInterface $input, array $options = [])
      */
     private function addDefaultOptions(array $options)
     {
-        $defaultOptions = array();
+        $defaultOptions = [];
 
         // hack to prevent validation error "The CSRF token is invalid."
         foreach ($this->formRegistry->getExtensions() as $extension) {

src/Console/Formatter/Format.php

@@ -36,7 +36,7 @@ public static function registerStyles(OutputInterface $output)
     {
         $formatter = $output->getFormatter();
 
-        $formatter->setStyle('fieldset', new OutputFormatterStyle('yellow', null, array('bold')));
+        $formatter->setStyle('fieldset', new OutputFormatterStyle('yellow', null, ['bold']));
         $formatter->setStyle('default', new OutputFormatterStyle('green'));
         $formatter->setStyle('question', new OutputFormatterStyle('black', 'cyan'));
     }

src/Console/Formatter/StylesCollection.php

@@ -10,7 +10,7 @@ class StylesCollection
     /**
      * @var OutputFormatterStyleInterface[]
      */
-    private $styles = array();
+    private $styles = [];
 
     /**
      * @param string                        $name

src/Console/Helper/HelperCollection.php

@@ -7,10 +7,10 @@
 
 class HelperCollection
 {
-    private $helpers;
     /**
      * @var array
      */
+    private $helpers = [];
 
     /**
      * @param HelperInterface $helper

src/Console/Helper/Question/AlwaysReturnKeyOfChoiceQuestion.php

@@ -74,10 +74,10 @@ public function getValidator()
                 }
                 $selectedChoices = explode(',', $selectedChoices);
             } else {
-                $selectedChoices = array($selected);
+                $selectedChoices = [$selected];
             }
 
-            $selectedKeys = array();
+            $selectedKeys = [];
 
             foreach ($selectedChoices as $selectedValue) {
                 $selectedKeys[] = $this->resolveChoiceViewValue($selectedValue);
@@ -132,7 +132,7 @@ private function prepareChoices()
      */
     private function prepareAutocompleteValues()
     {
-        $autocompleteValues = array();
+        $autocompleteValues = [];
 
         foreach ($this->choiceViews as $choiceView) {
             $autocompleteValues[] = $choiceView->value;