session_cache_limiter — Retrieve and Set Cache Limiter

Function: string session_cache_limiter([ string $cache_limiter ]) session_cache_limiter() returns the name of the current cache limiter.

The cache limiter determines the Cache-Control HTTP response header sent to the client or proxy, controlling how page content is cached. Values include nocache (prevent caching), public (allow client and proxy caching), and private (allow client caching only).

Parameter cache_limiter – optional string to set a specific cache limiter.

Return value

Returns the name of the cache limiter currently in use.

Example

<?php
/* Set cache limiter to 'private' */
session_cache_limiter('private');
$cache_limiter = session_cache_limiter();
echo "The cache limiter is now set to $cache_limiter<br />";
?>