How to pass SESSION variable to a page in the parent directory?

Question

On my web site I would like to have several sub-domains. Files that create context for a given sub-domain are stored in corresponding sub-directory.

Sometimes I nee

Answer 1

In PHP INI you can set the session domain to ".mysite.org" then you should be able to share the session between multiple domains. The relevant variable is:

session.cookie_domain

You can also set it inside your script with the session_set_cookie_params() function.

Edit - I should note this only works if your subdomains are on the same server (which looks like they are).

Answer 2

You're right that sessions cannot be shared in this way. However, you can use secure cookies to share user data across subdomains:

http://us3.php.net/manual/en/function.setcookie.php

Make sure the domain parameter when you set the cookie is something like

".mysite.org"

Then you'll be able to access the cookie from any subdomain of mysite.org