Headers for dynamic content

[pauls]

Hi,

Part of my website creates pdf files dynamically (using PHP) and displays them in a popup. Unfortunately, I have an issue which is due (I think) to local caching.

What happens is that the first time a page is called up, it works fine. If it is re-called fairly quickly, then you get an instant "page not available" error. The browser doesn't even appear to make the request to to server.

I suspect some sort of local caching issue and was wondering if anyone could tell me what header I need to send with the page to inform the browser that the page is not to be cached.

TIA

Cheers,

Paul

[vgarcia]

In PHP:

header("cache-control: no-store"); 

[pauls]

Thanks for that!

Are there any rules as to order of headers?

I now have:

pdf_close($p);
$buf=pdf_get_buffer($p);
$len=strlen($buf);
header("Content-type: application/pdf");
header("Content-Length: $len");
header("Content-Disposition: inline; filename=grouplist.pdf");
header("cache-control: no-store" ); 
print $buf;
pdf_delete($p); 

And when I try to open the site, I get the "do you want to open / save" dialog come up. If I click open "Open" it fails

If I take the last header line out, it starts "working" again, but displays the original problem.

I can only assume I'm missing something or that the header order matters....