Warning: mysqli_connect(): php_network_getaddresses: getaddrinfo failed: Name or service not known in /www/wwwroot/qukaixin.cn/library/mySql.php on line 48

Warning: mysqli_connect(): (HY000/2002): php_network_getaddresses: getaddrinfo failed: Name or service not known in /www/wwwroot/qukaixin.cn/library/mySql.php on line 48

Warning: mysqli_select_db() expects parameter 1 to be mysqli, bool given in /www/wwwroot/qukaixin.cn/library/mySql.php on line 52
cannot select DB
Fatal error: Uncaught Error: Call to a member function close() on bool in /www/wwwroot/qukaixin.cn/library/mySql.php:60 Stack trace: #0 [internal function]: Mysql->__destruct() #1 {main} thrown in /www/wwwroot/qukaixin.cn/library/mySql.php on line 60