Warning: mysqli::mysqli(): (HY000/1045): Access denied for user 'root'＠'localhost' (using password: NO) in D:\wwwroot\wenzhang\wwwroot\controller\class_MySQL.php on line 6
Access denied for user 'root'＠'localhost' (using password: NO)
下载后打开安装出现这个是干嘛啊