pulling data out of an array

Anon

I am not very good with variables so I was hopeing that there would be some people willing to help me with this problem. I need to pull data from my 'query_string' and manipulate it so that I can refer back to it later. This is what I have on my site. I have a site where the user can log in and out whenever they want. My problem now is that when the do login/logout the site doesn't save the location they were at and once they are logged in/out they have to find their way back to where they came from. I know about the query string, but I don't know how to manipulate it. When a user clicks on the link to login it takes them to 'site.php?webpage=login' and then after they have logged in (using a post to 'site.php?webpage=loginauth[and the other variables]) After the scripts makes sure they are the right person it then should go back to where they came from. I use javascript to instruct the browser to change pages. (window.location.href='<? where they came from ?>'😉 Can somebody help me to get the page they were at before they clicked the login butten? Thanx.

mikesgt2

if you say that the page they came from is the webpage variable. So say you are on the page:

site.php?webpage=main

then the link to the login would be:

site.php?webpage=login&returnto=$webpage

Then on the login poage you would do something like this:

/ do the login stuff ... /
header("Location: site.php?webpage=$returnto");

By the way, if you are doing user authentication you my want to look at session functions.

Anon

Thank you for your help. Before I read your post I managed to get something to work, but it wasn't like that. On my header page I have code that is like this:
<?php $referer=$HTTP_SERVER_VARS['query_string'];
session_register("referer");
?>
So every time a user visits a link it is saved in their session, and every user has a session, even guests. There is an if statement that checks to see if it is on a login page, and if it is then it doesn't save that link, cuz I don't care if they are on it or not. It works really good for me, but thanks for your help. BTW: Sessions are really cool, but I don't understand why people say they can't store variables, I have mine storing variables now.