user_count doesn't work

[winsoftware]

user online statistic works fine, but guest online doesn't work. there is only one guest
online all the time and that can't be true.

i found the code snippet, but i don't know where the error is:


if( $this_user['login'] != 1 )
{
if( $this_user['id'] > 0 )
{
$user_count++;
$names .= ($a) ? ", " : "";
$names .= $span_pre."<a href='./member.php?$session[sessionurl]&amp;u=".$this_user['id']."'>";
$names .= $this_user['prefix'].$this_user['name'].$this_user['suffix'];
$names .= "</a>".$span_suf;
$a++;
}
else
{
$guest_count++;
}


everybody has the same prob, but nobody cares about it. why?

i'd like to know how many users are online.