Warning: mysqli_connect(): (HY000/2002): Connection refused in /www/wwwroot/www.xiazaii.cn/Mysql.php on line 39
数据库连接失败

Warning: mysqli_errno() expects parameter 1 to be mysqli, boolean given in /www/wwwroot/www.xiazaii.cn/Mysql.php on line 42
错误编码

Warning: mysqli_error() expects parameter 1 to be mysqli, boolean given in /www/wwwroot/www.xiazaii.cn/Mysql.php on line 43
错误信息