Fatal error: Uncaught Error: Call to undefined function mysql_connect() in C:\wwwroot\xuanchuan.me\source\include\mysql.php:31 Stack trace: #0 C:\wwwroot\xuanchuan.me\source\init.php(63): MySQL->__construct('localhost', 3306, 'xuanchuan', 'lhj520', 'xuanchuan', 'utf8', 'dir_', false) #1 C:\wwwroot\xuanchuan.me\index.php(9): require('C:\\wwwroot\\xuan...') #2 {main} thrown in C:\wwwroot\xuanchuan.me\source\include\mysql.php on line 31