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.
session_cache_expire
(PHP 4 >= 4.2.0, PHP 5, PHP 7)
session_cache_expire — Get and/or set current cache expire
Descrierea
session_cache_expire
([ int|null
$value = null
] ) : int|false
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).
Parametri
-
value -
If
valueis given and notnull, the current cache expire is replaced withvalue.Notă: Setting
valueis of value only, ifsession.cache_limiteris set to a value different fromnocache.
Valorile întoarse
Returns the current setting of session.cache_expire.
The value returned should be read in minutes, defaults to 180.
On failure to change the value, false is returned.
Istoricul schimbărilor
| Versiune | Descriere |
|---|---|
| 8.0.0 |
value is nullable now.
|
Exemple
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";
?>
A se vedea și
- session.cache_expire
- session.cache_limiter
- session_cache_limiter() - Get and/or set the current cache limiter
add a note
User Contributed Notes 3 notes
Anonymous ¶
16 years ago
lance_rushing at hotmail dot com ¶
18 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.
WooDzu ¶
10 years ago
Just to make things clear. If session.cache_limiter is set to private the following header will be sent in HTTP response:
Cache-Control private, max-age=10800, pre-check=10800
Where 10800 is the amount of seconds - default value of 180 minutes set by session.cache_expire which you are enabled to change with session_cache_expire() on run-time
