Need Help: Form submit and IE Back button problem !!!

Hi guys,

My problem is when I submit my form and use the IE Back button, I got the error message "The page can not be displayed...."
below is how I do with the form

The First:
1. Page 1: submit form, method = post, action = Page 2
2. Page 2: process the form data and redirect (header/javascript) to Page 3
3. Page 3: hit the IE Back button and get the error

The Second:
1. Page 1: submit form, method = post, action = Page 2
2. Page 2: process the form data and stay in Page 2
3a. Page 2: hit the IE Back button, working properly
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3b. Page 2: click a hyperlink to page 3
4. Page 3: hit the IE Back button and get the error

I don't know why I get this error and how to solve....
need your help!

 

Its because the page contains expired post data and showing the page would mean resending the data. Your redirect is probably not being done properly otherwise the page 2 which contains postdata would not be cached.

In your scenario 1 you should send a HTTP 303 response code from page 2 to indicate that the intermediate page must not be cached. Also, don't send any actual output (no page contents, meaning no Javascript either).

header('HTTP/1.1 303 See Other');
header('Location: http://example.com/page3');

Code (PHP):

Adapt to your particular language as required.

 

I just do a little test and what i want to say is: THANK YOU SO MUCH penagate !!!
1. I use PHP to code
2. Insert ob_start() at the beginning and ob_end_flush() at the end to avoid sending output (so, i can make sure that the redirect function always uses php header)
3. add your code header('http/1.1 303 see other');
4. add exit; after header('location : $page');
5. working so coooool
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again, thank you penagate!