forcing image refresh in Mozilla firefox

[jeanray]

I have a site made entirely with AJAX, base PhP and MySQL, so the is only one page (index.php).
The user goes through various selections and an image is formed (on the server), then sent back to the client to show the updated image (SAME IMAGE NAME)
It did not work "all the time" (IE7).
I realised that the first image was stored in the cache and that, when the new image came, the image displayed was the one from the user's CACHE!
Easy enough:

<?php
    header("Cache-Control: no-cache, must-revalidate");
    header("Expires: Fri, 14 Sep 2007 05:00:00 GMT");
before the headers did the trick... for IE7 and others, but NOT for firefox.
I tried all sorts of combinations:
//    session_cache_limiter( 'nocache' );
//    session_start( );
or
//header("ETag: PUB" . time());
//header("Last-Modified: " . gmdate("D, d M Y H:i:s", time()-10) . " GMT");
//header("Expires: " . gmdate("D, d M Y H:i:s", time() + 5) . " GMT");
//header("Pragma: no-cache");
//header("Cache-Control: max-age=0, s-maxage=0, no-cache, must-revalidate");
//session_cache_limiter("nocache");
 

Any idea what would work (IE6, 7, FF, Moz, Opera)?

[ak1dnar]

Shall we try to send some unique request from the client also.

var url="server_page.php?foo="+foo;
url=url+"&bar="+Math.random();

[pbmods]

Heya, Jean. Welcome to TSDN!

Please use CODE tags when posting source code:

[CODE=php]
PHP code goes here.
[/CODE]