[nycphp-talk] lost sessions on redirect
Daniel Convissor
danielc at analysisandsolutions.com
Mon Feb 9 22:37:41 EST 2009
Hi Christina:
Before I get into specific code feedback, you REALLY need to get some
coding standards in place. Your nesting is a total mess. Read and
follow http://pear.php.net/manual/en/standards.php.
On Mon, Feb 09, 2009 at 10:08:30PM -0500, Christina Karlhoff wrote:
>
> setcookie("form", serialize($_POST), time()+300);
No. Put that stuff in the session, not the cookie.
> header('Location:
> http://www.wll.com/thankyou.shtml');
> $_POST['RemoteIP'] = $_SERVER['REMOTE_ADDR'];
... snip ...
> header('Location: ' . $_SERVER['HTTP_REFERER']);
... snip ...
Ouch. Security vulnerability. You can not trust user input. Unescaped
user input must not be put directly into databases, HTML, shell execution
commands or header calls (among other things). Read
http://phpsec.org/projects/guide/.
> if ($HTTP_COOKIE_VARS['form']) {
When you want to access cookies, use $_COOKIE. That may be the reason
you're loosing data. But as mentioned before, you should put this in the
session.
> So i understand that session error shows which required field was not
> entered by the user... but, what happens to the session vars with the
> form data?
It's not in the session. It's in a cookie.
--Dan
--
T H E A N A L Y S I S A N D S O L U T I O N S C O M P A N Y
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