    public static function add($var) {

        $route = self::$_route;

        self::$_route = array_merge($route, $var);

        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.