Can SESSION variables be shared between subdomains?

SESSION variables cannot be shared between subdomains by default due to security reasons. However, you can enable sharing by setting the session cookie domain to the root domain using the session_set_cookie_params function in PHP. This will allow SESSION variables to be accessed across subdomains. 

// Set the session cookie domain to the root domain
session_set_cookie_params(0, '/', '.yourdomain.com');

// Start the session
session_start();

Keywords

PHP SESSION variables subdomains sharing cross-domain

Related Questions