Fatal error: Uncaught Error: Call to undefined function mysql_connect() in C:\phpstudy_pro\WWW\e\class\connect.php:118 Stack trace: #0 C:\phpstudy_pro\WWW\e\class\connect.php(106): do_dbconnect('localhost', '', 'root', 'xgnic12814435', 'cbsrsorg') #1 C:\phpstudy_pro\WWW\e\public\ClickAd\index.php(10): db_connect() #2 {main} thrown in C:\phpstudy_pro\WWW\e\class\connect.php on line 118