session troubles

Anon

Hi all
I have a form that submits a $username and $usermail and at the top of the same page i have session_registered() both variables.

When a user wants to 'go back' and re-register the ORIGINAL values are kept?

Why are the session vars not changed to reflect the new form input?

Cheers

Nick

[deleted]

Beware of browser cache.
Sometimes a browser will even cache the results generated by a php script.
That means that if a user presses the "back" button in the broswer it's possible that the page with the old data is fetched from the browsers cache, instead of from your server.
(after a submit the session should be updated, use print_r($HTTP_SESSION_VARS) to see exactly what's in the session data.)

Anon

Thanks for that, I think I'm missing somthing fundamental though. I just knocked up the following test with the same results:

<?
// ses.php
session_start();
session_register("name");
?>

<body>
<form method="post" action ="ses2.php">
input name<br>
<input type="text" name="name">
<br>
<br>
<input type="submit">
</body>

<?
// ses2.php
session_start();
?>

<?
// ses3.php
session_start();
?>

<body>
<br>
<br>
and the name is <? print($name); ?>
<br>
<br>
<a href="ses.php">start again</a>
</body>

I always get the first name I entered?

Hope someone can point out the error of my ways!

much appriciated

Nick