如何通过unix socket连接到localhost上的mySQL

I recently moved my hosting server to another company. And I originally used db.inc.php to connect to the database, the config is as follows:

<?php
define('DB_INFO', 'mysql:DATABASELOCATION;dbname=NAMEOFTHEDATABASE');
define('DB_USER', 'ADMIN');
define('DB_PASS', 'ADMIN');
?>

but the new hosting server is "Localhost via UNIX socket"..

I'm not sure how this connection works..can I use the same php file to connect?

It can be easily found in the documentation:

mysql:dbname=testdb;unix_socket=/path/to/socket

You musn't specify host when using socket.