Problem using root as cookie path after installing CEON URI

[mc12345678]

I'm revisiting my cookie issue... to recap, the problem is that sessions are lost when I set the cookie path to root. For this reason I've had to leave the init_sessions.php override out of my CEON install (setting cookie path to root is the only thing this override does). Consequence is that Zen Cart carries around "zenid=..." in the URI... or at least that is supposed to be the case. I have the opposite happening to me: On the live website (https://www.astralisproductions.com/purchase) the zenid is not added to the URI even though the cookie path isn't root (verified by inspecting the cookie stored in Chrome). Conversely, my XAMPP localhost copy of the website does have cookie path set to root (and doesn't lose sessions), but adds zenid to every URI nevertheless.

I'd love to know what's happening. How/where does Zen Cart check for cookie availability?

If I understood the above correctly, seems like you were saying that the "disappearance" of the zenid was unepected and that it staying in the uri was expected... That is quite the opposite if that was the intended description. The index.php file if I remember correctly or perhaps includes/application_top.php is the first to pick up on the condition of the zenid... Looking through at least get and post.

Settings related to this may need to be different in both the live and development sites unless everything about the configuration and installation of the the server's software is the same...

[flyvholm]

If I understood the above correctly, seems like you were saying that the "disappearance" of the zenid was unepected and that it staying in the uri was expected...

Unexpected in both cases: It appears on localhost where cookie path is root, but disappears on the live site where cookie path is not root. Should be the other way around.

The index.php file if I remember correctly or perhaps includes/application_top.php is the first to pick up on the condition of the zenid... Looking through at least get and post.

So Zen Cart uses the PHP predefined constant 'SID' (session id) to determine if zenid should be added to the URI. 'SID' is empty when a cookie with the session ID is available (says PHP manual). In the case of my localhost copy I see the cookie with the correct session id in Chrome, and its path is root, meaning it is supposedly available on the entire domain. Yet 'SID' contains the zenid as if the cookie isn't there. I simply don't know what can prevent PHP from recognizing the cookie?