Hooray: QQ RE: [PHP4BETA] Docs for sessions?

Q) Is it safe to session_register a variable twice? Or must we check first? [http://129.142.82.11/session/function.session-is-registered.php3 session_is_registered session_is_registered -- Checks wether a variable is registered as a session object] Q) Although I am using cookies (and it works) <?=sid;?> is still outputting the session info. Is this right? How can I tell if the session id is coming from a cookie? Is there an easy way or is the easy way to check the COOKIES[] array for the session name I am interested in? Q) Can lots of session be active at the same time? Or only one? Q) "session_encode -- Encodes all session objects and properties to a string via serialize" - What kind of encoding does it do on objects fields and sub-objects? Sam