从外部服务器连接到数据库

Pretty much self explanatory...

But for some reason I'm getting a timeout...

Do I need to modify something at my cPanel or php.ini or httpd.conf on my Shared hosting server ?

I'm using XAMPP on my host and this is how I try to connect to my domain database :

$mysqli = mysqli_connect (
$mySharedHostingIP,
$mySharedHostingUserName,
$mySharedHostingPassword,
$mySharedHostingDB
);

Thanks for help!