Description:
------------
header function did not work corectly some times.

i send a example for test by your team

thanks.
mojtaba khani
mojtaba.khani@yahoo.com
+989351977673


Test script:
---------------
security.php
--------------------
session_start();
if(!isset($_SESSION["userName"])|| !isset($_SESSION["time"])||(300<=time()-$_SESSION["time"]))
{
session_destroy();
    header("location:logInUser.php");
}
require_once 'dbc.php';/// database configrator
$_SESSION["time"]=time();
mysql_query(("update users set lastActivity=".time().",online=1 where userName='".$_SESSION['userName']."'");




other page
-------------------------
require_once 'security.php'; /// 


new security.php
---------------------------
session_start();
if(isset($_SESSION["userName"])&& isset($_SESSION["time"])&&(10>time()-$_SESSION["time"]))
{
    $_SESSION["time"]=time();
    require_once 'dbc.php';
    Q("update users set lastActivity=".time().",online=1 where userName='".$_SESSION['userName']."'");
    $ad;
    $ti;
}
else 
{
    session_destroy();
    header ("location:../user/logInUser.php");
}