On May 7, 2010, at 8:41 PM, Karl DeSaulniers <karl@xxxxxxxxxxxxxxx>
wrote:
On May 7, 2010, at 2:06 PM, Charlene Wroblewski wrote:
I have a problem with IE7. It has a tendency to cache output
produced by PHP. It occurs in a few ways:
* I make a minor change to a php program, but you can't see it in
IE7, but can in FF. CTRL-Refresh does not make it work.
* I modify data using a form in IE7. When I click on a link to
return to the form the old data is still there, but if I hit
CTRL-Refresh the new values are there.
I have set up some caching to try to fix the second issue, but I'm
not sure if I've chosen the right header lines:
$now = time ();
$prety_lmtime = gmdate ('D, d M Y H:i:s', $now). ' GMT';
$prety_emtime = gmdate ('D, d M Y H:i:s', $now + $interval). ' GMT';
// Backwards Compatibility
header ("Last Modified: $prety_lmtime");
header ("Expires: $prety_emtime");
// HTTP/1.1 Support
header ("Cache-Control: private, max-age=$interval,s-maxage=0");
I got this code from a book. I don't want to prevent caching
completely because I want to be able to go back to the form when
there is an error in validation of fields before entering it into
the db. But I do want to be able to see the new data after it is
entered in the db.
Charlene
Sounds like you need attach the data somehow when hitting that
return link. Maybe an array
$newData = array();//fill this array with the new values
On your form page, set up a
if(isset($newData)){
//fill form fields
}
I did notice that on your header, you did not have "no-cache".
header ("Cache-Control: private, no-cache, max-age=$interval,s-
maxage=0");
HTH
Karl DeSaulniers
Design Drumm
http://designdrumm.com
One other option is to fool the browser by appending a time variable
to the end of the URL to get around caching.
Bastien
Sent from my iPod
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