	public static function totalUser() {
        $posts = Db::result("SELECT `id` FROM `user` WHERE `group` > '0' ");
        $npost = Db::$num_rows;
        return $npost;
    }

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.