can i unset session to given time i want to unset session after 20 minutes after login and user autometically logof how can it possible pls tell me
thanks

Use the session.gc_maxlifetime and session.gc_probability configuration directives in php.ini.

session.gc_maxlifetime accepts a value in seconds, its default is 24 minutes or 1440 seconds. session.gc_probability determines how likely the system is to preform garbage collection (delete outdated sessions) on every request, its default value is 1%. So to ensure that users are booted after 20 minutes of idle time up garbage collection probability. I use a 75% probability, but for other reasons.. I use it to get a more accurate count of how many users are on my site at any given time.

These directives are setable at any level, so you could use the ini_set() function, edit them in php.ini itself, or if you are using apache, edit the directives using .htaccess or httpd.conf.

Have a look at:
http://www.php.net/ini_set

hth,
: )
Rich

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Smiling Souls
http://www.smilingsouls.net
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i use IIS i have changed maxlifetime but nothing did happened
pls i need some detail about that topic

I'm not sure what to suggest. Does IIs require a restart after altering ini values? Try restarting the server. You also have to increase garbage collection probability, if you don't then old sessions can (possibly) be revived.. even after their expiration time, provided the browser window hasn't been closed.

: )
Rich

:::::::::::::::::::::::::::::::::
Smiling Souls
http://www.smilingsouls.net
:::::::::::::::::::::::::::::::::

i have made changes in php.ini and restarted IIS but the result is
same can u give some code about this issue

Have you verified that your new settings took effect? You can verify PHP's configuration at run-time using phpinfo:

<?php phpinfo(); ?>


If you can't get PHP to work using built-in sessions, you might want to write your own custom session handlers to make sure you're not allowing expired sessions to exist.

There's a good (albeit really old) article about this at www.phpbuilder.com.


Take care,

Nik
http://www.bigaction.org/