session_cache_limiter
(PHP 4 >= 4.0.3, PHP 5)
session_cache_limiter — Get and/or set the current cache limiter
Description
string session_cache_limiter
([ string $cache_limiter
] )
The cache limiter defines which cache control HTTP headers are sent to
the client. These headers determine the rules by which the page content
may be cached by the client and intermediate proxies. Setting the cache
limiter to nocache disallows any client/proxy caching.
A value of public permits caching by proxies and the
client, whereas private disallows caching by proxies
and permits the client to cache the contents.
In private mode, the Expire header sent to the client
may cause confusion for some browsers, including Mozilla. You can avoid
this problem by using private_no_expire mode. The
expire header is never sent to the client in this mode.
The cache limiter is reset to the default value stored in
session.cache_limiter
at request startup time. Thus, you need to call
session_cache_limiter() for every
request (and before session_start() is called).
Parameters
-
cache_limiter
-
If cache_limiter
is specified, the name of the
current cache limiter is changed to the new value.
Return Values
Returns the name of the current cache limiter.
Examples
Example #1 session_cache_limiter() example
<?php
/* set the cache limiter to 'private' */
session_cache_limiter('private');
$cache_limiter = session_cache_limiter();
echo "The cache limiter is now set to $cache_limiter<br />";
?>
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