Session question

[Anon]

I have a couple of session questions.
First is, I want to prevent people bookmarking pages inside the web site. If I pass my session through every page, if some one bookmarks it, they will save the URL + my session. Theoretically, when the session expires, the bookmark becomes useless right?

Second question is, I have people testing a web site i'm building and the problem is, some of them click on the "back" button on their browser and they get a "page expiry message". Is there a way to prevent or fix this?

Thanks,
Mike

[Anon]

Mike,

When the sessione expires...providing you have a script in the bookmarked page that goes something like:

if(!$PHPSESSID){
header("location: go_away.php3");
}

then they won't be able to view your page again from the bookmark.

The problem with the error is because you are most probabably using POST. I have seen a few comments on this error and I'm not sure if there is a fix.
I recommend to try to use GET when you can which should resolve it....also, if you have any pages that contain sql INSERT statements as well as html code...try to separate these into two pages...one for the sql INSERT and one for the result....then sometimes you won't get the error.

HTH
Scott d~