session_cache_expire
(PHP 4 >= 4.2.0, PHP 5)
session_cache_expire — Return current cache expire
说明
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_limiter at request startup time. Thus, you need to call session_cache_expire() for every request (and before session_start() is called).
参数
- new_cache_expire
-
If new_cache_expire is given, the current cache expire is replaced with new_cache_expire .
Note: Setting new_cache_expire is of value only, if session.cache_limiter is set to a value different from nocache.
返回值
Returns the current setting of session.cache_expire. The value returned should be read in minutes, defaults to 180.
范例
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";
?>
