[nirvana43]

Update..
EXIDE has also provided easy solution on this question -

Originally Posted by EXIDE

vB has a function that returns the avatar URL for you.

PHP Code:

<?php
include('./global.php');
include('./includes/functions_user.php');

$avatar = fetch_avatar_url(USERID);
/* Array
(
        [hascustom] => 1
        [0] => storage/avatars/avatar1_12.gif
        [1] =>  width="80" height="80"
) */
?>

Props to EXIDE.
Cheers!!