Warning: mysqli_connect(): (HY000/2002): Connection refused in /www/wwwroot/ydys1688/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/ydys1688/Mysql.php on line 42
错误编码
Warning: mysqli_error() expects parameter 1 to be mysqli, boolean given in /www/wwwroot/ydys1688/Mysql.php on line 43
错误信息