Need advise on how to circumvent error with forms and back button

[NodsDorf]

We have a form on our OSC website that helps users find specific products. It was designed so that you can filter selections based off given parameters. When you have filtered as far as you like you just hit the update button and the products matching the parameters the users selects are displayed.

 

Now if you hit the Browser "BACK" button like many people do you get this error in firefox

Error

-To display this page, Firefox must send information that will repeat any action (such as a search or order confirmation) that was performed earlier.

 

You get this in IE 8

Error

-Webpage has expired

 

You get this in Chrome

Error

-Confirm Form Resubmission

 

Here is a link to to the form (just make a few selection then hit the Update button on the form, then use the browsers back button to duplicate)

http://www.rubbersto...duct-search.php

 

I've been researching the issue and I found one post on an ASP forum that says they can fix it by using this code

protected void GridView1_RowUpdated(object sender, GridViewUpdatedEventArgs e)
{
	if (e.Exception != null)
	{
	this.lblErrorMessage.Text = e.Exception.Message;
	}
	else
	{
	Response.Redirect(Request.Url.ToString(), false);
	}
}
[/url][size="2"]

Ref: http://forums.asp.net/t/1335572.aspx

 

Is there any way to prevent this for happening with php, it is kind of a major annoyance to our users.

[NodsDorf]

Most of the help I've seen on the web has to do with how to prevent it from happening locally, not how to stop it from happening server side.

 

Again any help is very much appreciated.

 

Thanks,

Don

[NodsDorf]

Anybody have any thoughts. Any help would be appreciated.

 

Thank you,

Don

[NodsDorf]

Anybody have any thoughts. Any help would be appreciated.

 

Thank you,

Don

 

Hate to Revive this post but it's my next bug to squish, and I'm still at a complete loss after hours of searching.

[germ]

Hate to Revive this post but it's my next bug to squish, and I'm still at a complete loss after hours of searching.

I found this

 

Maybe it will help, maybe not. I haven't really looked at it in detail.

[NodsDorf]

I found this

 

Maybe it will help, maybe not. I haven't really looked at it in detail.

 

Now that is good info!

 

Thank you.

[NodsDorf]

This was a royal pain.

 

Thankfully I found a solution.

 

Here is the code if anybody has the problem

 

On the page with the form right under the call to include headers.php add this line

<?php
header( 'Cache-Control: private, max-age=10800, pre-check=10800' );
?>