[kh99]

You could try this:

select:eval
global $vbulletin;
$result = $vbulletin->db->query_read_slave("SELECT username, userid, usergroupid FROM " . TABLE_PREFIX . "user WHERE usergroupid IN(5, 6, 7) ORDER BY usergroupid");
$options = array();
while ($row = $vbulletin->db->fetch_array($result))
{
    $options[$row['userid']] = htmlspecialchars_uni($row['username']);
}