Client-server communication between JS and PHP via Ajax long polling.

Drop phull folder into your webserver accessible folder.

Link the client-side code to your page like any other JavaScript

<script src="path/to/phull/client.js"></script>

Now just connect and set the listener for incoming messages:

phull.connect('path/to/phull/', function()
{
    phull.emit({user: 'user123', text: 'hello world', at: new Date});
},
function (message)
{
    console.dir(message);
});

Take a look at example.php for a simple chat example.

See it in action!