session_cache_expire

(PHP 4 >= 4.2.0, PHP 5, PHP 7)

session_cache_expireReturn current cache expire

Описание

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).

Список параметров

new_cache_expire

If new_cache_expire is given, the current cache expire is replaced with new_cache_expire.

Замечание: Setting new_cache_expire is of value only, if session.cache_limiter is set to a value different from nocache.

Возвращаемые значения

Returns the current setting of session.cache_expire. The value returned should be read in minutes, defaults to 180.

Примеры

Пример #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";
?>

Смотрите также

Коментарии

Автор:
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.
2008-02-20 10:50:34
http://php5.kiev.ua/manual/ru/function.session-cache-expire.html
Using PHP 8.2

session_start();

$result1 = session_cache_expire( 30 ); // setter, results in Warning: Session cache expiration cannot be changed when a session is active in ...

$result2 = session_cache_expire(); // getter

var_dump( $result1, $result2 ); // prints out: int(180) int(180)    [note: 180 is the default value]

Because the session was already started, cache expiration could not be changed (warning message).  However, the return value is NOT false, it is still the original, unchanged value!

So I do not know what is considered a failure to change the value as per the documentation (`On failure to change the value, false is returned.`).
2024-02-18 15:20:36
http://php5.kiev.ua/manual/ru/function.session-cache-expire.html

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