The problem is that PHP has to generate the Last-Modified header, so it
can't send only the "HTTP/1.0 304 not modified", that is what I want.
I think Last-Modified relies on the last modified date and time of the
file, but this is irrilevant in server-generated pages.
Thank you for your help.
> ---------- Initial message -----------
>
> From : Christian Reiniger <[EMAIL PROTECTED]>
> To : "Ouster" <[EMAIL PROTECTED]>, [EMAIL PROTECTED]
> Cc :
> Date : Thu, 6 Sep 2001 11:53:50 +0200
> Subject : Re: [PHP] 304 Not Modified
>
> On Wednesday 05 September 2001 21:22, Ouster wrote:
> > I'm making a sort of cache system. I fell to this problem: I leave a
> > cookie with the timestamp of the last access, and when the user
> > reconnect, I compare the timestamp of the last change with the
> > timestamp sent me with the cookie. Then I leave a new cookie.
> >
> > So:
> > if($last_modified <= $last_access)
> > {
> > header("304 Not Modified);
> > exit;
> > }
> > else
> > {
> > /* code genertating the new page */
> > }
>
> Tip: You don't even need a cookie for that. If you send a
> "Last-Modified: " header along with all your pages (and perhaps even
if
> you don't), the browser will automatically add an "If-Modified-
Since:"
> header on each request. See the attached files for how to handle this
>
> > Whether the If is TRUE, I get a blank page, else I see a new page
> > (correct behaviour).
> > Why I always get a blank page and not the cached page?
>
> (see other responses)
>
> --
> Christian Reiniger
> LGDC Webmaster (http://lgdc.sunsite.dk/)
>
> /* you are not expected to understand this */
>
> - from the UNIX V6 kernel source
>
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