Stie cineva cum pot rezolva aceasta eroare :

Deprecated: mysql_connect(): The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead in /home/u770039586/public_html/config.php on line 6

Cod PHP:
<?php
$db_name ="a3900988_dire"; /** The name of the database for this install */
$dbusername = "a3900988_dire"; /** MySQL database username */
$dbpassword = "********"; /** MySQL database password */
$server = "localhost"; //** Probably don't need to change this */
$connection = mysqli_connect('server', 'dbusername', 'dbpassword', 'db_name') or die(mysql_error());
?>