session_destroy() destroys all of the data associated with the current session. It does not unset any of the global variables associated with the session, or unset the session cookie. To use the session variables again, session_start() has to be called.
In order to kill the session altogether, like to log the user out, the session id must also be unset. If a cookie is used to propagate the session id (default behavior), then the session cookie must be deleted. setcookie() may be used for that.
thanks , I understood the above ...
but i wana know what is the basic syntax to expire a session.
Example..i had prepared a login page and values sent in a session,how session could be expired autometically after 10 or more minutes so that user gets a message of session expired...
help me as soon as possible..