Fix issue in PHP 5.3

api/autoload.php

@@ -28,7 +28,7 @@ $applicationContext = $builder->build();
 // Fix for getallheaders() on PHP-FPM and nginx
 if (!function_exists('getallheaders')) {
     function getallheaders() {
-        $headers = [];
+        $headers = array();
         foreach ($_SERVER as $name => $value) {
             if (substr($name, 0, 5) == 'HTTP_') {
                 $headers[str_replace(' ', '-', ucwords(strtolower(str_replace('_', ' ', substr($name, 5)))))] = $value;