How Do I use session variable across multiple domain or subdomain using php?

[rashgang]

Could some one tell me how to use session variable across multiple domain.

 

For example I have created a project in open cart. Need to pass the sessiion variables once user logged in same to another domain

 

www.domain1.com

www.subdomain1.com

 

How to achieve this. please someone help me to do this using php

[Ch0cu3r]

PHP session can only shared with sub domains like subname.domain.com and domain.com. You cannot share session over different domains like domain1.com and domain2.com

[cyberRobot]

Is this something you can pass using GET/POST variables?

[vinny42]

Sessions are identified by the sessionid. generally the sessionid is stored in a cookie and security rules don't allow you to set a cookie for domain X from domain Y.

 

However, there is nothing to stop you from making the browser send the sessionid in the URL, from where PHP can set the cookie, making the same sessionfile availably on both domains.

[rashgang]

i will not use post/get. i need to session variables in subdomains. if we have to use the same sesison subdomain like

 

example.com

domain.example.com

how to set the sesstion ini_set and call it in our page

[Ch0cu3r]

You'd call session_set_cookie_params before you start the session to enable sessions to span across sub domains, example

session_set_cookie_params(0, '/', '.domain.com'); 
session_start(); 

Alternatively hardcode the cookie settings in the php.ini, specifically the session.cookie_domain directive.