Databases and MySQLi

I have moved to a dedicated server and I have created new databases to go with it, however the syntax is slightly different.

$mysqlsocket = “localhost/tmp/mysql5.sock”;

$connect = mysqli_connect($host_name, $user_name, $password, $database, 3316, $mysqlsocket);

The only differences I can see are the above, do they need converting and adding to wp-config.php for it to work?