SESSION_CACHE_LIMITER(3)						 1						  SESSION_CACHE_LIMITER(3)

session_cache_limiter - Get and/or set the current cache limiter

SYNOPSIS

       string session_cache_limiter ([string  $cache_limiter])

DESCRIPTION

       session_cache_limiter(3) 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.

	Setting the cache limiter to '' will turn off automatic sending of cache headers entirely.

	The  cache  limiter  is  reset	to  the default value stored in session.cache_limiter at request startup time. Thus, you need to call ses-
       sion_cache_limiter(3) for every request (and before session_start(3) is called).

PARAMETERS

	      o $cache_limiter
		- If $cache_limiter is specified, the name of the current cache limiter is changed to the new value.

	      Possible values

	      +------------------+------------------------------------------------------------------------------------------------------------------------------------+
	      |      Value	 |																      |
	      | 		 |																      |
	      | 		 |							      Headers sent							      |
	      | 		 |																      |
	      +------------------+------------------------------------------------------------------------------------------------------------------------------------+
	      | 		 |																      |
	      |     public	 |																      |
	      | 		 |																      |
	      | 		 |																      |
	      | 		 |																      |
	      | 		 |			      Expires: (sometime in the future, according session.cache_expire) 				      |
	      | 		 |			      Cache-Control: public, max-age=(sometime in the future, according to session.cache_expire)	      |
	      | 		 |			      Last-Modified: (the timestamp of when the session was last saved) 				      |
	      | 		 |																      |
	      | 		 |																      |
	      |private_no_expire |																      |
	      | 		 |																      |
	      | 		 |																      |
	      | 		 |																      |
	      | 		 |		 Cache-Control: private, max-age=(session.cache_expire in the future), pre-check=(session.cache_expire in the future) |
	      | 		 |		 Last-Modified: (the timestamp of when the session was last saved)						      |
	      | 		 |																      |
	      | 		 |																      |
	      |     private	 |																      |
	      | 		 |																      |
	      | 		 |																      |
	      | 		 |																      |
	      | 		 |		 Expires: Thu, 19 Nov 1981 08:52:00 GMT 									      |
	      | 		 |		 Cache-Control: private, max-age=(session.cache_expire in the future), pre-check=(session.cache_expire in the future) |
	      | 		 |		 Last-Modified: (the timestamp of when the session was last saved)						      |
	      | 		 |																      |
	      | 		 |																      |
	      |     nocache	 |																      |
	      | 		 |																      |
	      | 		 |																      |
	      | 		 |																      |
	      | 		 |				    Expires: Thu, 19 Nov 1981 08:52:00 GMT							      |
	      | 		 |				    Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0		      |
	      | 		 |				    Pragma: no-cache										      |
	      | 		 |																      |
	      +------------------+------------------------------------------------------------------------------------------------------------------------------------+
RETURN VALUES

	Returns the name of the current cache limiter.

EXAMPLES

       Example #1

	      session_cache_limiter(3) 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 />";
	      ?>

SEE ALSO

       session.cache_limiter.

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