This invaluable reference guide for PHP developers extending or customizing Joomla! 1.5 is packed with expert advice and tips on all aspects of Joomla! programming illustrated by self-contained examples. The world's hottest open-source content management system, and winner of the 2006 Open Source CMS Prize, standard Joomla! does a great job managing website content; but its true power lies in its application framework, which facilitates creating sophisticated add-ons that extend Joomla! in virtually unlimited directions. If you've mastered the basics of creating Joomla! extensions using PHP, this book takes you to the next level, covering: best-practice design and coding for Joomla! components, modules, plugins, and other extensions; customizing page output; using JavaScript effects; using Web Services from within Joomla!; and ensuring your code is secure and error-free. A unique and comprehensive reference to the main areas of interest within the Joomla! framework