<?php
include_once "inc/connect.php";
include_once "inc/h.php";
include_once "inc/user.php";
$online=mysql_query("SELECT * FROM `user` WHERE `hash' > '".(time()-1800)."' ");
While($user=mysql_fetch_array($online))
{
Echo'<a href=/user='.$user[id].'> '.$user[nick].' </a>';
} 
include_once "inc/f.php";
?>