    public static function isHadParent($parent='', $menuid = ''){
        if(isset($menuid)){
            $where = " AND `menuid` = '{$menuid}'";
        }else{
            $where = '';
        }
        if(isset($parent) && $parent != ''){
            $parent = " `parent` = '{$parent}'";
        }else{
            $parent = '1';
        }
        $sql = sprintf("SELECT * FROM `menus` WHERE %s %s", $parent, $where);
        $menu = Db::result($sql);
        return $menu;
    }

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.