Jacques wrote:
> How can I destroy the session object for a particular user when that user
> leaves my web site without properly signing out?
>
> Jacques

The most important part of this is "garbage collection."  You can't
really know for 100% sure that a user has left without properly signing
out, but there are several things you can do to mitigate the problem:

- Only set session cookies (i.e. browser should destroy the cookie when
the browser is closed)
- Modify the following php.ini directives in a way that fits you:
  - http://php.net/manual/en/ref.session.php#ini.session.gc-probability
  - (also look at the next several gc_* entries)

--
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