Fatal error: Uncaught Error: Call to undefined function mysql_connect() in /home/admin/zsb.jlu.edu.cn_80/wwwroot/sign_up/global.php:36 Stack trace: #0 /home/admin/zsb.jlu.edu.cn_80/wwwroot/sign_up/RegisterLogin.php(4): include_once() #1 {main} thrown in /home/admin/zsb.jlu.edu.cn_80/wwwroot/sign_up/global.php on line 36