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Warning: mysqli_select_db() expects parameter 1 to be mysqli, bool given in D:\wwwroot\yonghaoka.cn\library\mySql.php on line 141
cannot select DB
Fatal error: Uncaught Error: Call to a member function close() on bool in D:\wwwroot\yonghaoka.cn\library\mySql.php:149 Stack trace: #0 [internal function]: Mysql->__destruct() #1 {main} thrown in D:\wwwroot\yonghaoka.cn\library\mySql.php on line 149