Last person to post in topic

[TerryMason]

Is there a way to show the avatar of the last person who posted in a topic?

I'm able to do this with a plugin for the topic starter, using this code:

if ($thread['lastposterid']) {
	require_once(DIR . '/includes/functions_user.php');
	$avatarurl = fetch_avatar_url($thread['postuserid'], true);
	$thread['lastposteravatar'] = $avatarurl[0] ? $avatarurl[0] : vB_Template_Runtime::fetchStylevar("imgdir_misc").'/unknown.png';
}