PHP 5.3 may have officially just launched but the Ibuildings crew has been preparing for it and have already posted this guide to help you make the migration up to this latest version.

The good news is that if you've been keeping your applications current with the language and best practices, there are very few things that could affect you. The bad news is that the farther away from the current version of the language you get, the harder it is going to be to port your code. For developers coding against the 5.2 branch, there are a few edge case situations of which, you need to be aware.

The post includes a list of the major updates to the functionality of PHP 5.3 including changes to some of the array functions, deprecated functionality and the addition of two new reserved words - GOTO and NAMESPACE.