PHP not carrying Session variables on next page

PHP is carrying few session variables on next page and leaving few. Following are the 3 session variables i am trying to access on "confirm_cart.php" after redirect. I am getting session values of those variables which are in include file only. print_r($_SESSION) is not printing session variables defined in foo.php

<? 
// file name: foo.php
ob_start();
include "include/open_session.php";
@extract($_POST);
 $_SESSION['txtFName'] = $txtFName;
 $_SESSION['txtLName'] = $txtLName;
  $_SESSION['sEmail'] = $sEmail;     
// print_r($_SESSION); exit();              
 header ("Location: confirm_cart.php");
  ob_end_flush();
?>

PHP:

include file(open_session.php) contents:

<? session_start();

		if(empty($_SESSION['sess_id']) || !isset($_SESSION['sess_id'])){
			$sess_id = session_id();
			$_SESSION['sess_logedin'] = 0;
			$_SESSION['sess_id'] = $sess_id;
			$_SESSION['customer_session_id'] = 0;
		} 
?>

PHP:

Help me please to solve this issue.

 

Make sure you have session_start(); on top of each page

 

yes session_start(); is on top of confirm_cart.php

In fact same include file on top of the confirm_cart.php
include "include/open_session.php";
this file has session_start(); at first line.

contents of confirm_cart.php

include "include/open_session.php";
 print_r($_SESSION); // I,m not getting all session variables here
//..... more code....

PHP:

 

Make sure there is no output rendered in any included file and session_start() is not called under any condition.

Better write error_reporting(E_ALL); at the top of each script to know what the notice/warning its throwing.

 

Off the top of my head, I would presume that your output buffering is messing up the session. Try starting the session before ob_start.

 

No its not the problem. I have tested.

 

I ran your code in my local server and got this as the output.

Array
(
    [sess_logedin] => 0
    [sess_id] => ceb9c6ade63363af681d395db864fd8d
    [customer_session_id] => 0
    [txtFName] => 
    [txtLName] => 
    [sEmail] => 
)

PHP:

Its working here.

 

Thanks xrvel for your time and effort. Thats my problem i am not getting txtFName, txtLName and sEmail on the next page.

Array
(
[sess_logedin] => 0
[sess_id] => ceb9c6ade63363af681d395db864fd8d
[customer_session_id] => 0

)

I am getting only this. Is there something to do with Server/php.ini settings?

 

What about this :

1. Checking your $_POST with

   print_r($_POST);

   PHP:
   .
   If you see the data there,
2. check the $txtFName with

   var_dump($txtFName);

   PHP: