<?php
 
include('db_connect.php');
 
$uid = $_COOKIE['userid']; // this is the users id Variable
 
$fid = $_SESSION['friends_id'];// this is the friends id Variable
 
$passkey = $_COOKIE['passkey']; // this is not the password it is in place of the password and it is an auto randomized ever time you login and logout to stop people from hacking
 
$time = time(); // this is a Unix time stamp
 
$timeframe = '900'; // 900secs = 15mins || this is how long till the user is shown to be offline of in case the user exits out of browser or have logged or has user IDLE's to long but is cookie dose not time out all they have to do is refresh the page and the will be shown online again 
 
$lastaction = msql_query("SELECT lastvisit FROM users WHERE id = $friendid AND passkey = $passkey"); // this lastvisit from users table where the id = user id
 
if ($lastaction <= $time) {
	$online_offline = print "<img class=\"online\" src=\"images/online_offline/offline_1.gif\">";// this will show that your user is currently offline
}elseif ($lastaction > $time){
	$online_offline = print "<img class=\"online\" src=\"images/online_offline/online_1.gif\">";// this will show that your user is currently online
}
 
function update_lastaction(){
	$uid = $_COOKIE['userid'];
	$time = time();
	$timeframe = '900'; // 900secs = 15mins; 1800secs = 30mins; 3600secs = 1hour;
	msql_query("UPDATE users SET lastvisit = ".$time+$timeframe." WHERE id = $uid");
}// this function gets inputted into each page.php or init.php page what you put in each page.php is below
 
//           update_lastaction();
 
//now if you wont to show online/offline add in the Variable below to your profile html and every other html page you want
 
//          $online_offline;
 
?>