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Question

Is there a way to disable browser cache for a single page?

Answer 1

+6 A:

Add current timestamp as parameter of url, e.g.

http://server.com/index.php?timestamp=125656789

Anatoliy 2009-09-25 20:16:52

This is the best answer since older browsers (i am looking at you IE) don't follow the no-cache header in some situations.

Byron Whitlock 2009-09-25 20:26:24

Do this on the link? What about regular page refreshes?

Nathan Long 2009-09-25 20:32:50

Redirect browser to new timestamp, if timestamp passed by param is too old.

Anatoliy 2009-09-25 20:49:04

Answer 2

+3 A:

You should send the following header:

Cache-control: no-cache

in the HTTP response.

Martin v. Löwis 2009-09-25 20:18:14

I did this, using Craig Treptow's code suggestion, but no dice. I edited the question to show the headers.

Nathan Long 2009-09-25 20:45:49

Answer 3

+3 A:

I think this tells you what you want:

http://www.thesitewizard.com/archive/phptutorial2.shtml

Look for "Preventing the Browser From Caching"

header( "Expires: Mon, 20 Dec 1998 01:00:00 GMT" );
header( "Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT" );
header( "Cache-Control: no-cache, must-revalidate" );
header( "Pragma: no-cache" );

Craig Treptow 2009-09-25 20:18:52

Thanks for this. So far no change, though. I edited my question to show the response headers I'm getting.

Nathan Long 2009-09-25 20:46:20

Answer 4

+1 A:

You could add these headers:

Cache-Control: no-cache

And (for backward compatibility with HTTP/1.0 clients)

Pragma: no-cache

Pascal Thivent 2009-09-25 20:18:59

Answer 5

A:

Use the header() function. You have to set a few to cover all browsers; see http://www.php.net/manual/en/function.header.php#75507

Ken Keenan 2009-09-25 20:22:26

Answer 6

A:

Here's another take that isn't PHP specific.

Try this in your <head> </head> section:

<meta http-equiv="cache-control" content="no-cache, no store"/>
<meta http-equiv="Expires" Content="Mon, 25 May 2009 19:07:03 GMT">

Found that at the end of a long thread here:

http://forums.mozillazine.org/viewtopic.php?f=25&t=673135&start=75

Craig Treptow 2009-09-25 21:08:52

HTML Meta Tags vs. HTTP Headers: http://www.mnot.net/cache_docs/#META

Pascal Thivent 2009-09-25 21:19:12

Great info, thanks Pascal!

Craig Treptow 2009-09-28 13:05:21

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