没有在重定向请求上设置会话

Question

Problem is: session is not being set another time after the page is redirected. Have a look at my code:

login.php

<?php
session_start();
$pg=$_SERVER["REQUEST_URI"];
$pg=substr($pg,0,11);
$_SESSION['pg']=$pg;
?>
<form action='test.php'>
...
...
</form>

test.php

<?php
session_start();
$pg=$_SESSION['pg'];
if(some_condition){
    echo "<script>";
    echo "window.location='".$pg."'";
    echo "</script>";
}
?>

First time, it works fine, it redirects to login.php. After first redirect (test.php to login.php), session is not being set again & so no redirect then after.

Can anyone tell why session is not being set after redirect?

Answer 1

Somehow it still removes a session, can't still get the reason. Tried with setting up a cookie & made it consistent with pages needed.

if($_COOKIE['loginpage']!='/test.php'){
    $pg=$_SERVER["REQUEST_URI"];
    $pg=substr($pg,0,9);
    setcookie('loginpage',$pg,false,'/');
}

As cookie is persistent across all two/three pages, it works fine. Thank you all for your help, cheers :)