Why does this code reset my stats?

[JohnBee]

I have been trying to reproduce an external.php file that shows my max users
online outside of vbulletin.

I have taken the data from my index.php WOL sectiona and placed it in
an external file, to date it does work somewhat but everytime I run the file
it resets my global max users online stats to whatever the number is
currently on my board.

can someone help me find a way so it doesn't reset the data?
here is my code:

<?php

error_reporting(E_ALL & ~E_NOTICE);
require_once("./global.php");
$datecut = time()-$vboptions['cookietimeout'];

$activeusers = '';
if ($vboptions['displayloggedin'])
{
	$datecut = TIMENOW - $vboptions['cookietimeout'];
	$numbervisible = 0;
	$numberregistered = 0;
	$numberguest = 0;

	$forumusers = $DB_site->query("
		SELECT
			user.username, (user.options & $_USEROPTIONS[invisible]) AS invisible, user.usergroupid,
			session.userid, session.inforum, session.lastactivity,
			IF(displaygroupid=0, user.usergroupid, displaygroupid) AS displaygroupid
		FROM " . TABLE_PREFIX . "session AS session
		LEFT JOIN " . TABLE_PREFIX . "user AS user ON(user.userid = session.userid)
		WHERE session.lastactivity > $datecut
		" . iif($vboptions['displayloggedin'] == 1, "ORDER BY username ASC") . "
	");

	if ($bbuserinfo['userid'])
	{
		// fakes the user being online for an initial page view of index.php
		$bbuserinfo['joingroupid'] = iif($bbuserinfo['displaygroupid'], $bbuserinfo['displaygroupid'], $bbuserinfo['usergroupid']);
		$userinfos = array
		(
			$bbuserinfo['userid'] => array
			(
				'userid' => $bbuserinfo['userid'],
				'username' => $bbuserinfo['username'],
				'invisible' => $bbuserinfo['invisible'],
				'inforum' => 0,
				'lastactivity' => TIMENOW,
				'usergroupid' => $bbuserinfo['usergroupid'],
				'displaygroupid' => $bbuserinfo['displaygroupid'],
			)
		);
	}
	else
	{
		$userinfos = array();
	}
	$inforum = array();

	while ($loggedin = $DB_site->fetch_array($forumusers))
	{
		$userid = $loggedin['userid'];
		if (!$userid)
		{	// Guest
			$numberguest++;
			$inforum["$loggedin[inforum]"]++;
		}
		else if (empty($userinfos["$userid"]) OR ($userinfos["$userid"]['lastactivity'] < $loggedin['lastactivity']))
		{
			$userinfos["$userid"] = $loggedin;
		}
	}

	foreach($userinfos AS $userid => $loggedin)
	{
		$numberregistered++;
		if ($userid != $bbuserinfo['userid'])
		{
			$inforum["$loggedin[inforum]"]++;
		}
		$loggedin['musername'] = fetch_musername($loggedin);

		}

	// memory saving
	unset($userinfos, $loggedin);

	$activeusers = substr($activeusers , 2); // get rid of initial comma

	$DB_site->free_result($loggedins);

	$totalonline = $numberregistered + $numberguest;
	$numberinvisible = $numberregistered - $numbervisible;

	// ### MAX LOGGEDIN USERS ################################
	$maxusers = unserialize($datastore['maxloggedin']);
	if (intval($maxusers['maxonline']) <= $totalonline)
	{
		$maxusers['maxonline'] = $totalonline;
		$maxusers['maxonlinedate'] = TIMENOW;
		build_datastore('maxloggedin', serialize($maxusers));
	}

	$recordusers = $maxusers['maxonline'];
	$recorddate = vbdate($vboptions['dateformat'], $maxusers['maxonlinedate'], true);
	$recordtime = vbdate($vboptions['timeformat'], $maxusers['maxonlinedate']);

	$show['loggedinusers'] = true;
}
else
{
	$show['loggedinusers'] = false;
} 

print 'Most users ever online was '.$recordusers.', ' .$recorddate.' at '.$recordtime;

?>