Session Functions
What most people also don't know, is that most Linux distributions (Debian and Ubuntu for me atleast) have a cronbjob that cleans up your session dir using the value set in the global /etc/php5/php.ini (which defaults to 24mins). So even if you set a value larger in your scripts, the cronbjob will still cleanup sessions using the global value.
If you run into that situation, you can set the global value higher in /etc/php5/php.ini, disable the cronjob or even better, do your own session cleanup in a non-systemwide directory or a database.
session_cache_expire
(PHP 4 >= 4.2.0, PHP 5)
session_cache_expire — Return current cache expire
Description
int session_cache_expire
([ string
$new_cache_expire
] )session_cache_expire() returns the current setting of session.cache_expire.
The cache expire is reset to the default value of 180 stored in session.cache_expire at request startup time. Thus, you need to call session_cache_expire() for every request (and before session_start() is called).
Parameters
-
new_cache_expire -
If
new_cache_expireis given, the current cache expire is replaced withnew_cache_expire.Note: Setting
new_cache_expireis of value only, if session.cache_limiter is set to a value different from nocache.
Return Values
Returns the current setting of session.cache_expire. The value returned should be read in minutes, defaults to 180.
Examples
Example #1 session_cache_expire() example
<?php
/* set the cache limiter to 'private' */
session_cache_limiter('private');
$cache_limiter = session_cache_limiter();
/* set the cache expire to 30 minutes */
session_cache_expire(30);
$cache_expire = session_cache_expire();
/* start the session */
session_start();
echo "The cache limiter is now set to $cache_limiter<br />";
echo "The cached session pages expire after $cache_expire minutes";
?>
See Also
- session.cache_expire
- session.cache_limiter
- session_cache_limiter() - Get and/or set the current cache limiter
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User Contributed Notes
session_cache_expire - [3 notes]
karel at narfum dot org ¶
1 year ago
Anonymous ¶
4 years ago
The manual probably doesn't stress this enough:
** This has nothing to do with lifetime of a session **
Whatever you set this setting to, it won't change how long sessions live on your server.
This only changes HTTP cache expiration time (Expires: and Cache-Control: max-age headers), which advise browser for how long it can keep pages cached in user's cache without having to reload them from the server.
lance_rushing at hotmail dot com ¶
7 years ago
I've encountered the same problem of loosing focus when using IE and a javascript window.location.refresh/replace().
After fusing around I found that a <meta http-equiv="refresh" content="600"> works without move the focus on the parent frame's form. The down side is loading up the browser history and an annoying 'click' in IE on the page load.