I need to use php sessions without cookies, my session registers works perfect, but I really don't know how to use an expiration time as it is used with cookies. Do you know what can I do to use an expiration time of 15 minutes??. I've tried using mysql to save the session ID's and check there if the sessoin is already registered and how long it has been inactive to see if it's an accepted time, but it really uses a lot of resources just to check. And if you have a lot of visitors at your page your machine almost die. )
Other thing is that the session Id's keeps saved in my /tmp and are never deleted if you don't do a logout where I use the destroy code.

Thank you very much

Marcos F. Villa