session_cache_expire

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

session_cache_expire현재 캐시 만료를 반환

설명

int session_cache_expire ([ string $new_cache_expire ] )

session_cache_expire()session.cache_expire의 현재 설정을 반환합니다.

캐시 만료는 요청 시작시에 session.cache_limiter(기본값 180)로 초기화됩니다. 그러므로, 매 요청마다 (session_start() 호출 전에) session_cache_expire()를 호출해야 합니다.

인수

new_cache_expire

new_cache_expire가 주어지면, 현재 캐시 만료가 new_cache_expire로 교체됩니다.

Note: session.cache_limiternocache다른 값으로 설정되어 있을 경우에, new_cache_expire는 값만 설정합니다.

반환값

현재 session.cache_expire 설정을 반환합니다. 반환하는 값은 분 단위로 읽으며, 기본값은 180입니다.

예제

Example #1 session_cache_expire() 예제

<?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";
?>

참고

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User Contributed Notes 3 notes

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79
Anonymous
12 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.
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-5
lance_rushing at hotmail dot com
14 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.
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-13
WooDzu
6 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
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