How to pass php session with XMLHttpRequest

The problem I've got is that I'm calling a php script on my server via XMLHttpRequest from a page that has already a session cookie set. The problem is that the script called by my page creates a new session_id for each call and does not use the existing one to store, the information I want to set, in it. Any solutions?

Best regards, pbcoder

You're probably regenerating the session in your server side file .... can you post the part that checks the session here ? You can set a specific session id using session_id ( http://php.net/manual/en/function.session-id.php) in PHP.

set SID var in your XHR

$id_from_xhr_get_or_post_var=$_GET["SID"]; // or $_POST["SID"]; if you're using post
session_id($id_from_xhr_get_or_post_var);
session_name("your_session_name");
session_start();

You can store the old id in a hidden form field. It is then sent along with the rest of your XHR form data to the AJAX handling script.

<input type='hidden' name='oldsession' value='<?php echo session_id(); ?>