Re: no-cache headers

From: Date: Mon, 18 Feb 2002 12:39:46 +0000
Subject: Re: no-cache headers
References: 1  Groups: php.general 
Request: Send a blank email to php-general+get-85179@lists.php.net to get a copy of this message
----- Original Message ----- From: "Phil Ewington" <phil@n-igma.net> > I am new to PHP and am having problems with no-cache headers, I have the > following code added as the first line of code in the page... > > <? > header("Expires: Mon, 01 Jan 1997 00:00:00 GMT"); > header("Cache-Control: no-store, no-cache, must-revalidate"); > header("Pragma: no-cache"); > ?> > > A combination of no-cache headers usually does the trick, well in ColdFusion > anyway :o), yet this code still shows the wrong images after an upload until > a refresh of the browser is performed. Have I done something wrong or are > headers not very reliable in PHP? Those are fine. I also add: <meta content="no-cache"> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="Expires" content="Mon, 06 Jan 1990 00:00:01 GMT"> If you just added the cache control, then have you cleared the browser cache? Once the page is cached, the browser will return it regardless of the cache-control.

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