Fatal error: Uncaught mysqli_sql_exception: Unknown database 'xml' in C:\xampp\htdocs\xmll\1\db.php:15 Stack trace: #0 C:\xampp\htdocs\xmll\1\db.php(15): mysqli_connect('localhost', 'root', '', 'xml') #1 C:\xampp\htdocs\xmll\1\ajax.php(5): include('C:\\xampp\\htdocs...') #2 {main} thrown in C:\xampp\htdocs\xmll\1\db.php on line 15