On the Zend Developer Zone Stas Malyshev has posted a new tutorial looking at the internationalization features that come bundled with PHP 5.3.
PHP 5.3 has been recently released and one of the new features in core is the internationalization extension. It allows you to support a multitude of languages and local formats much easier than before, without having to learn all the tiny the details of local formats and rules.
The internationalization extension makes it simpler to handle various language support in your application. Stas lists out some of the functionality included (including locale, number formatting and normalizing) and code samples to illustrate their use.