How to read main cookie from the sub domain with an existing sub domain cookie in PHP?

Question

I need to use main domain cookies for my sub domains as with higher priority when both sub and main domain cookies exists.

The problem is when I\'m on sub.do

Answer 1

It looks like the gist of your issue is reading a cookie set in domain.com from sub.domain.com.

Add

session.cookie_domain = .domain.com

to your php.ini to make this happen. If you're on a shared hosting enviroment and can't modify your ini file, try having this somewhere in your code:

ini_set("session.cookie_domain", ".domain.com");

You should now be able to access cookies set by domain.com on subdomain.domain.com.