session .cache_expire question?

[bnownlater]

I am new to PHP, but familiar with ASP. I am trying to figure out if I can set session.cache_expire = 0 in the php.ini file, but hard code session.cache_expire = 15
in the script. Is this possibly or am I stuck with what the php.ini is set to? Thanks.

[[deleted]]

There are two ways to expire a session.
One is to expire the datafile on disk, the other is to expire the cookie (or URL) that references the session.

If you set the session_expire of the datafile to zero, your disk will slowly fill up with unused session data.
I suggest you set the datafile expire to well over that of what you plan to do with the sessions, and use the cookie-expirationdate to expire the sessions fro the client's point of view.