Figuring out session variables? Having a problem

Hi Everyone,

I’m a little confused by sessions.

This is my goal. In the below URL If someone clicks on “contact us” and they aren’t logged in I want that user to be re-directed to a login page. I know I can do this with php sessions but I’m a confused as to how. Does the session have to be on the car-display-contact2.php or the car-display-contact-update.php? or both pages?

How would you attack this problem?
http://whatsmyowncarworth.com/auto-members/car-display/car-display-contact2.php

Thanks everyone!

When someone logs in to your site, put something in their session so that you know they’re logged in on future requests. For example:

//login.php, after you check the username/password or whatever is required
session_start();
$_SESSION['logged_in'] = 1;

In your car-display-update-contact.php page:

session_start();
if (!isset($_SESSION['logged_in'])) {
  //redirect to login page
  header("Location: http://www.example.com/login.php");
  exit;
}