I'm developping this website where each subdomain is a service, I wanted the user accounts to work on ever subdomains and users not having to relog everytime they switch from a subdomain to another so I'm using this code:
session_name("login");
session_set_cookie_params(0, '/', '.my_domain.com');
session_start();
It works very well, now my problem is with the keep alive, since some subdomains host single page applications, I have to do ajax calls to keep the PHP session alive, instead of putting a keep_alive.php file per subdomains (which would be the exact same file) I'm trying to use a single keep_alive.php file on one subdomain and do all the ajax calls on this file.
The problem is it doesn't work when the call is made from a different subdomain.
Example:
My keep_alive.php file is hosted on static.my_domain.com
If I try to call it from pics.my_domain.com it says $_SESSION isn't set, but if I call it from static.my_domain.com it works.
My .htaccess file already accepts Access-Control-Allow-Origin from other subdomains.
I'm kind of stuck.
It it possible or my only solution is to copy the keep_alive.php file for each subdomain / create a symlink?
