    public static function add($var)
    {
        $route = self::$_route;

        self::$_route = array_merge($var, $route);
        // new Router();
        $keys = array_map('strlen', array_keys(self::$_route));
        array_multisort($keys, SORT_DESC, self::$_route);
        // print_r(self::$_route);
        return self::$_route;
    }
The software constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component.