Fatal error: Uncaught Error: Call to undefined function mysqli_connect() in C:\phpstudy_pro\WWW\www.mds-ah.com\link.php:6 Stack trace: #0 C:\phpstudy_pro\WWW\www.mds-ah.com\functionlang.php(4): require_once() #1 C:\phpstudy_pro\WWW\www.mds-ah.com\newss.php(4): require_once('C:\\phpstudy_pro...') #2 {main} thrown in C:\phpstudy_pro\WWW\www.mds-ah.com\link.php on line 6