Allow php sessions to carry over to subdomains

Question

I use php sessions (not cookies, except for session id cookie) for all user data, and when a user goes to their profile user.mydomain.com they are immediately \"logged out\"

Answer 1

yes. ini_set is working. but remember to destroy all caches and cookies of the browser to see it works.

1. destroy all caches and cookies of your browser

2. in your xxx.example.com and yyy.example.com, your php files should start like this.

   ini_set('session.cookie_domain', '.example.com' ); session_start();