When I ini_set(‘session.cookie_domain’,‘.domain.com’) on http and https, I find that the cookie is sent to Apache, but not being passed on to php, even though it is accepted by Apache. Either Apache or PHP is rejecting the cookie for that host. This happens going from http to https or from https to http.
This thread is getting long and off-topic. I think this is an Apache hashing function which isn’t matching me up. I don’t know for sure, of course.