Fatal error: Uncaught Error: Call to a member function fetch() on bool in C:\phpstudy_pro\WWW\www.tnqzd.com\puyuetian\mysql\install.php:35 Stack trace: #0 C:\phpstudy_pro\WWW\www.tnqzd.com\puyuetian.php(82): require() #1 C:\phpstudy_pro\WWW\www.tnqzd.com\index.php(22): require('C:\\phpstudy_pro...') #2 {main} thrown in C:\phpstudy_pro\WWW\www.tnqzd.com\puyuetian\mysql\install.php on line 35