It's explained in the header() page of the manual:
<?php
header("Expires: Mon, 26 Jul 1997 05:00:00 GMT"); // Date in the past
header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
// always modified
header("Cache-Control: no-store, no-cache, must-revalidate"); //
HTTP/1.1
header("Cache-Control: post-check=0, pre-check=0", false);
header("Pragma: no-cache"); // HTTP/1.0
?>
Marco
-------------
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On Thu, 2002-11-07 at 22:35, Robbert van Andel wrote:
> Is there a way I can keep the caching from happening using PHP?
>
> On Thu, 2002-11-07 at 19:32, Martin Towell wrote:
> > sounds like a browser caching problem to me
> > dunno if that helps though :/
> >
> > -----Original Message-----
> > From: Robbert van Andel [mailto:robbert@;vafam.com]
> > Sent: Friday, November 08, 2002 2:30 PM
> > To: [EMAIL PROTECTED]
> > Subject: [PHP] Graphics question
> >
> >
> > I have created a webpage that builds a table and graph using the GD
> > functions. When I switch to another page or select a different month to
> > build the table for, the graph.jpg does not rebuild. I have to press
> > reload to make the graph render using the new data. I have used
> > imagedistroy($pic) in the hopes that this will work, but it didn't.
> >
> > To elaborate on the situation, I first call imagecreate, then run the
> > code to create the bar graph. I then use
> >
> > imagejpg($pic,$graphname) (or something ot that affect. I don't have
> > access to the code at home).
> >
> > I then show the picture using
> >
> > echo "<img src=\"$graph\">";
> >
> > Finally I call imagedestroy($pic). Do you have any suggestions?
> >
> >
> >
> >
> > --
> > PHP General Mailing List (http://www.php.net/)
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> >
> >
>
>
>
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