How to implement guide with php 8.2 maintaining session state across multiple domains using samesite cookies
I've tried everything I can think of but I'm trying to debug I'm relatively new to this, so bear with me. I'm working with a question with session management in my PHP application when accessed across multiple subdomains. I'm using PHP 8.2 on a server configured to set cookies with the `SameSite=None; Secure` attributes. Despite this configuration, the session does not continue across my subdomains, leading to users being logged out unexpectedly when they navigate from one subdomain to another. I've tried explicitly setting the session cookie parameters in my `session_start()` function like this: ```php ini_set('session.cookie_samesite', 'None'); ini_set('session.cookie_secure', '1'); ini_set('session.cookie_domain', '.mydomain.com'); session_start(); ``` However, the session seems to reset every time the user switches subdomains. I'm also checking the network requests in the browser's developer tools, and I see that the cookies are correctly being sent and received, but the session ID doesn't seem to be consistent. I've made sure that all subdomains are under the same parent domain and I have set the `session.cookie_domain` accordingly. Here’s what a typical cookie looks like in the browser for one of the subdomains: ``` Set-Cookie: PHPSESSID=abc123; path=/; domain=.mydomain.com; secure; HttpOnly; SameSite=None ``` I’ve also confirmed that my server has HTTPS configured properly. Can anyone provide insights on what might be causing the inconsistency with session management across my subdomains, or if there are any additional configurations I might have overlooked? Any help would be greatly appreciated! My development environment is Ubuntu. Is there a better approach? I'm developing on Ubuntu 20.04 with Php. Any advice would be much appreciated.