Can POSTADA warning message be avoided?

jheitz

Hi all,

I've done a bit of research on the Web before posting this question, but couldn't find a suitable answer.

I have a series of PHP web pages with a POST FORM each. I want the users to be able to navigate from one page to the other, and I have done this with no problem passing variables as GET arguments.

The problem is that if the user presses the browser's back button, a message pops up saying:

The page you are trying to view contains POSTDATA that has expired.... To resend the data press OK

My question is: is there an easy way to avoid this message from appearing?.

I tried using the following as a means to achieve this but didn't work:

header("Cache-Control: no-store, no-cache, must-revalidate");
header("Cache-Control: post-check=0, pre-check=0", false);
header("Pragma: no-cache");

I am using Firefox as my testing browser.

bogu

Dont send variables through GET, u can keep your values in a session array, thats how I do when I have multiple steps in a register form or something like this and dont use history.back() use the location of the next or prev page...

jheitz

Hi Bogu,

Thanks for the idea. In my case it is easier to send variables via GET as there is no security implication and I don't really need to create a SESSION ARRAY for this.... But even if I did, I would still have the problem with the annoying POSTDATA message...

Anyone knows how to solve this? Thanks,

bogu

The idea of the session it was only for not using the javascript history.back() function witch is popup-ing the message:

The page you are trying to view contains POSTDATA that has expired.... To resend the data press OK

And use the links for the back and forward page (page1.php or page3.php).

jheitz

Sorry guys, anyone knows how to get around this? Thanks