Alargar el tiempo online del usuario

[tutuyales]

Código PHP:

<?php
################################################## ###############################
## -= YOU MAY NOT REMOVE OR CHANGE THIS NOTICE =- ##
## --------------------------------------------------------------------------- ##
## Filename online.php ##
## Developed by: ##
## Edited by: ##
## License: ##
## Copyright: ##
## ##
################################################## ###############################
@include("GameEngine/Database.php");
@include("GameEngine/Admin/database.php");
$active = $admin->getUserActive();
?>
<style>
.del {width:12px; height:12px; background-image: url(img/admin/icon/del.gif);}
</style>
<a href= dorf1.php>Return To The Game</a>
<table id="member">
<thead>
<tr>
<th colspan="6">Online Gamerz (<?php $online = mysql_num_rows(mysql_query("SELECT * FROM ".TB_PREFIX."users WHERE ".time()."-timestamp < (36000*1000)")); echo $online; ?>)</th>
</tr>
</thead>
<tr>
<td>Name [access]</td>
<td>Time</td>
<td>Tribe</td>
<td>Pop</td>
<td>Villages</td>
<td>Gold</td>
</tr>
<?php
if($active){
for ($i = 0; $i <= count($active)-1; $i++) {
$uid = $database->getUserField($active[$i]['username'],'id',1);
$varray = $database->getProfileVillages($uid);
$totalpop = 0;
foreach($varray as $vil) {
$totalpop += $vil['pop'];
}
if($active[$i]['tribe'] == 1){
$tribe = "Roman";
} else if($active[$i]['tribe'] == 2){
$tribe = "Teuton";
} else if($active[$i]['tribe'] == 3){
$tribe = "Gaul";
}
echo '
<tr>
<td><a href="?p=player&uid='.$uid.'">'.$active[$i]['username'].' ['.$active[$i]['access'].']</a></td>
<td>'.date("d.m.y H:i:s",$active[$i]['timestamp']).'</td>
<td>'.$tribe.'</td>
<td>'.$totalpop.'</td>
<td>'.count($varray).'</td>
<td><img src="../img/admin/gold.gif" class="gold" alt="Gold" title="This user has: '.$active[$i]['gold'].' gold"/> '.$active[$i]['gold'].'</td>
</tr>
';
}
}else{
echo '<tr><td colspan="6" class="hab">Online Gamerz</td></tr>';
 
}
 
?>