hi all,
i'm a newbie and i really would like to be able to understand how session works.
for the scenario, i have customers with two users login to manage their records
(like adding their own customers). e.g. customer A has a username customera1
and customera2, customer B has customerb1 and customerb2.
when user logins, i add on the session accountcode $_SESSION['accountcode']
(which is the unique identifier for each customer). here are some of the
questions i have:
1. how can i make sure each user can login only one time?
2. if customera1 and customera2 are logged in at the same time and they are
going to access the same data, how can i lock it to whoever had access to it
first?
3. if a session expires, is there a way to automatically logout that user and
destroy the session?
4. if both a user in customer A and B are logged in, then user A logouts and i
have a script that call session_destroy(), will that also destroy the session
of customer B?
hope someone can help me.
regards,
nhadie
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