how to find usergroup

[clamcrusher]

what variable(if any) is the current users usergroup stored in?

basically i want to do something like this

PHP Code:

<?php

if ($user['usergroup'] == 'admin') {
    // do something
}

?>

btw- im refering to the user who is making the page request. im not taling about looping through the results of some db query.

thanks.