Ouzo\Utilities\Arrays::toArray PHP Метод

    public static function toArray($element)
    {
        if (is_null($element)) {
            return array();
        }
        return is_array($element) ? $element : array($element);
    }

 public static function callFunction($functionName, $parameters)
 {
     $db = self::getInstance();
     $bindParams = Arrays::toArray($parameters);
     $paramsQueryString = implode(',', array_pad(array(), sizeof($bindParams), '?'));
     return Arrays::first($db->query("SELECT {$functionName}({$paramsQueryString})", $parameters)->fetch());
 }