Fatal error: Uncaught Error: Call to undefined function mysql_connect() in C:\xampp\htdocs\test\plaincart\library\database.php:4 Stack trace: #0 C:\xampp\htdocs\test\plaincart\library\config.php(75): require_once() #1 C:\xampp\htdocs\test\plaincart\index.php(2): require_once('C:\\xampp\\htdocs...') #2 {main} thrown in C:\xampp\htdocs\test\plaincart\library\database.php on line 4