My apologies in advance if my request is not well formed as I'm not familiar with PHP. Actually, I'm a designer not a coder but the site in question is using PHP.

My client needs to pass a URL parameter found in Google ad links to a form that the visitor may submit (a reservation form).

Example:

http://www.domain.com/?gclid=COfArNPHw5gCFRlcagodrjoF2w

Seems to me I need to somehow grab the 'gclid', create a session and then and store the ID in the session so if the visitor submits the reservation form, it can get passed along.

So if this makes sense, I need to understand how to achieve this. If this is beyond the scope of this forum, I understand completely. Thanks for helping a 'noob'.

At the top of the php pages, add this:

PHP Code:

<?php
  
  session_start();
  
  if (isset($_GET['gclid']) AND !isset($_SESSION['gclid'])) $_SESSION['gclid'] = $_GET['gclid'];
  
?>
 
Rest of page contents...

Thank you for your reply mgraphic -- I'll give it a try. Cheers.