while(list($user_id,$nick) = mysql_fetch_row($rs)){
 $online_list[$x] = "$user_id|$nick";
  $x++;
}

$query = "SELECT b.buddy_id, u.username FROM buddy_list b, $usertab u WHERE u.user_id = b.buddy_id AND b.user_id = $sess_usr_id";
$rs_buddies    = mysql_query($query);
$buddie_count = mysql_num_rows($rs_buddies);
$y=0;
$z = 0;

while(list($buddy_id,$nick) = mysql_fetch_row($rs_buddies)){
 if(in_array("$buddy_id|$nick",$online_list)){
   $online[$y] = "$buddy_id|$nick";
   $y++;
   }
 else{
   $offline[$z] = "$buddy_id|$nick";
   $z++;
   }
}

$online_list = array();

$dings[] = 'foo';