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Posted by Ondrej Ivanič on 10/21/97 11:27
Ken Tozier wrote:
> I'm writing a bunch of scripts that will all use a common session and
> am a bit confused about when to manually destroy sessions and/or when
> php automatically destroys them for me. For example:
>
> If a user starts a session, leaves their computer on and goes home for
> the weekend, when they come back on Monday will their session still
> exist on the server? Could they pick right up where they left off?
don't care and only sets
session.gc_maxlifetime
session.gc_divisor
session.gc_probability
to correct values.
When you call session_start php sometimes runs garbage collector which
remove old sessions. Probability is calculated by using
gc_probability/gc_divisor e.g. 1/100 means there is a 1% chance that the
GC process starts on each session_start(). If you set probability to
100% GC will run on every session_start(). This is good for testing but
not for production environment (default value (1%) is enough).
Sessions which is last modified (before php 4.2.? was used last access
time) before current time minus gc_maxlifetime is a old session and will
be deleted.
--
Ondrej Ivanic
(ondrej@kmit.sk)
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