[Adrian Schneider]

Where the userIDs are 1 2 and 3:

<if condition="in_array($vbulletin->userinfo['userid'], array(1, 2, 3))">...</if>

If you want to check for these userIDs OR staff members, you can use do so

<if condition="is_member_of($vbulletin->userinfo, 5, 6, 7) or in_array($vbulletin->userinfo['userid'], array(1, 2, 3))">

For your own sanity down the road, I would actually suggest this: global_start

PHP Code:

$moderator_usergroups = array(5, 6, 7);
$moderator_users = array(1, 2, 3);

$show['moderator_app_links'] = (
    is_member_of($vbulletin->userinfo, $moderator_usergroups) or
    in_array($vbulletin->userinfo['userid'], $moderator_users)
); 


Then use

<if condition="$show['moderator_app_links']">

in your template because it will be easier to manage without digging through your templates.