As Developer.com mentions in a new article, there's a new video tutorial posted over on Internet.com about using PHP and JSON to pass around data in your applications.

Got seven minutes to learn how you can harness the power of PHP, JavaScript and JSON in a powerful AJAX-driven web application? This Internet.com Video tutorial shows you all you need to know to pass data between the client and server using JSON data format.

The video explains a bit about JSON+PHP and shows you how to send a simple message (book-related data) to the server and how to handle the response with a little help from jQuery's Ajax functions.