session_cache_limiter()

session_cache_limiter() — Get and/or set the current cache limiter.

session_cache_limiter returns the name of the current 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.

Inputs: value: If value is specified and not null, the name of the current cache limiter is changed to the new value.

Returns: Returns the name of the current cache limiter. On failure to change the value, false is returned.