PHPMaster.com: PHP Namespaces
One of the features that's recently been introduced into the PHP language has been a feature for keeping code not only more organized, but more modular - namespacing (PHP 5.3+). In this new tutorial from PHPMaster.com they introduce you to this handy feature and include a bit of code showing their use.
Namespaces were a long awaited feature in PHP. While many other important features were released with PHP 5, namespaces were not supported until version 5.3. This led to various techniques for emulating them which, though necessary, were messy and confusing. Although namespaces have been part of PHP for over a year now, such techniques still exist. Many developers simply don't know how to use proper namespaces in their code. In this article I will explain why namespaces are important and how you can use them in your own PHP code.
He starts off by talking about what namespaces are and how they can be used to segment up applications, especially larger ones, into more manageable chunks. Basic code is included showing how to implement a namespace, referencing items inside a namespace, the "use" keyword and the __NAMESPACE__ magic variable.