Its hardly a hack

I just ripped it out of index.php and it worked!
Code:
<?
require("global.php");
if ($displayloggedin==1) {
$datecut=time()-$cookietimeout;
$loggedins=$DB_site->query_first("SELECT COUNT(sessionid) AS sessions FROM session");
$totalonline=$loggedins[sessions];
$loggedins=$DB_site->query_first("SELECT COUNT(sessionid) AS sessions FROM session WHERE userid=0");
$numberguest=$loggedins[sessions];
$loggedins=$DB_site->query_first("SELECT COUNT(sessionid) AS sessions FROM session WHERE userid<>0");
$numberregistered=$loggedins[sessions];
$numbervisible=0;
$loggedins=$DB_site->query("SELECT DISTINCT user.userid,username,location FROM user,session WHERE session.userid=user.userid AND session.userid<>0 AND invisible=0 ORDER BY username");
if ($loggedin=$DB_site->fetch_array($loggedins)) {
$numbervisible++;
$userid=$loggedin[userid];
$username=$loggedin[username];
$location=$loggedin[location];
eval("\$activeusers .= \"".gettemplate("loggedinuser")."\";");
while ($loggedin=$DB_site->fetch_array($loggedins)) {
$numbervisible++;
$userid=$loggedin[userid];
$username=$loggedin[username];
$location=$loggedin[location];
eval("\$activeusers .= \", ".gettemplate("loggedinuser")."\";");
}
}
$numberinvisible=$numberregistered-$numbervisible;
eval("\$loggedinusers = \"".gettemplate("loggedinusers")."\";");
}
echo $loggedinusers;
?>