PHP 5.3 introduces a much requested feature for object-oriented programmers: namespaces. At the time of this writing, version 5.3 of PHP was in development, but is planned on being released in the near future.
One of the purposes object-oriented programming is to remove ambiguous development and data access items. This basically means identifying common functionality and creating the most reusable framework possible, typically in the form of classes. When creating this functionality, you will begin to have issues with naming conventions and narrowing down functionality even further. To resolve this scoping issue, namespaces allow you to contain those bits of code even more.
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