[SOLVED] Restrict going backwards

[jandrews3]

I have a logout button on my website for my students which clears (unset) the variable $_SESSION['student'] and then sends the student to the home page (which doesn't require a password). I want to prevent another student from sitting down to the computer and clicking on the back button to see information the previous student had been doing. Is this possible?

 

At this point, the first student is properly logged out. If another student comes and clicks back a few times but then clicks on a link, he is kicked out (because the session variable has been unset). BUT he can still view the data on the pages just prior to the previous student's logout. Boy I hope I haven't been confusing.

[AngelicS]

Hmm.. try adding this on every page:

 

<?php
if(!isset($_SESSION['student']))
{
//Ask the user to login. Add forms etc.
}
else
{
//Show the page that's supposed to be seen.
}
?>

 

Best wishes

//AngelicS