Creating sortable lists with PHP and AJAX

You might have been in a situation before where you had a list of items in your database that needed to be output in a specific order. These items could be anything: perhaps a listing of your favourite movies or your favourite books. For whatever reason, you want them ordered in a custom way that can’t be determined automatically (such as alphabetical).

This article covers the implementation of a system that lets you easily define the order of such a list.

http://www.phpriot.com/d/articles/client-side/
sortable-lists-with-php-and-ajax/