title: Comet & PHP: How to use Comet with a PHP Chat System?
body: <p>I have to build a simple chat system in PHP using Comet.</p>
  
  <p>I don't know what would be the best approach to this project.</p>
  
  <p>What is the best <strong>technique</strong> (cross-browser would be nice) to use, and how to <strong>implement it</strong>? What <strong>libraries</strong> can I use that already have comet support. (<em>I don't want to use the Bayeux Protocol</em>)</p>
  
  <p>I already have a PHP backend running for the chat system, but I need some ideas for the interaction between client and server.</p>
  
  <p>Thank you all in advance. My regards.</p>