Posted by dave ches on 11/23/05 11:46

Hi
Thanks: yes I've tried those headers. It still delivers a cached
version of the gd image unless the browser is idle for a minute or 2.

I'm going to contact my hosting provider and see if it's anything in the
server config.

What I don't understand is how it can go to the cached version of the
php script that generates the gd image even when the php script is
called via a URL with a unique querystring. (and it is: each time you
refresh and look at the source it is a different querystring.

regards
dave



AD7six wrote:
> Try this in your import image script.
>
> //**** Lots of headers to ensure the image is not cached.
> // Date in the past
> header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
> // always modified
> header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
> // HTTP/1.1
> header("Cache-Control: no-store, no-cache, must-revalidate");
> header("Cache-Control: post-check=0, pre-check=0", false);
> // HTTP/1.0
> header("Pragma: no-cache");
> //**** End of crappy headers.
>
> It's not my own work, and I don't remember where I got it from but it
> worked for me for a similar application.
>
> Regards,
>
> AD7six
>

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