PHP session variables not preserved with ajax

Question

I have a one page website that uses AJAX to load new php files and update the display.

I start my php session on the main page but when I use ajax to update inner ht

Answer 1

Need to initialize the session before you trying to login through ajax call.

session_start();

Initialize on the top of the page from where you start the login ajax call.

So that the SESSIONID will be created and stored the browser cookie. And sent along with request header during the ajax call, if you do the ajax request to the same domain

For the successive ajax calls browser will use the SESSIONID that created and stored initially in browser cookie, unless we clear the browser cookie or do logout (or set another cookie)