设置COOKIE_DOMAIN以共享不起作用的cookie

Question

I have Wordpress website on www.something.com, and another php script on sub-domain www.panel.something.com my php script has its own separate database and user table Im trying to implement Single Sign On from Wordress and remove registration and sign in process on my php script on sub domain as I follow this answer here Single Sign On with SubDomains

as a first step I tried to enable COOKIE on main domain and sub-domain but when I put this in my wp-config.php it doesnt let me to sign in to Wordpress

define( 'COOKIE_DOMAIN', '.something.com' );

even removing the dot

define( 'COOKIE_DOMAIN', 'something.com' );

doesnt work

I even tried

define( 'COOKIE_DOMAIN', 'www.something.com' );

but it doesnt let me login in my main Wordpress site

Im trying to use the same cookie in my www.something.com as well as my sub-domain www.panel.something.com

Thanks

Answer 1

First Clear Browser Cache (including cookies) + server cache from cache plugins etc.

Then set the following in your wp-config.php file:

define('ADMIN_COOKIE_PATH', '/');
define('COOKIE_DOMAIN', '');
define('COOKIEPATH', '');
define('SITECOOKIEPATH', '');

Also, you may checkout the answer from HERE:

define('WP_ALLOW_MULTISITE', true);
define('MULTISITE', true);
define('SUBDOMAIN_INSTALL', false);
define('DOMAIN_CURRENT_SITE', 'your-domain.com');
define('PATH_CURRENT_SITE', '/');
define('SITE_ID_CURRENT_SITE', 1);
define('BLOG_ID_CURRENT_SITE', 1);
define('SUNRISE', 'on');

If it still fails, then read this answer or contact your server support, there may be a configuration issue in the server.