This practical tutorial has detailed, carefully explained case studies using PHP to build new, effective mashup applications, which combine data from multiple external online sources into an integrated Web 2.0 experience. If you are confident with PHP programming and interested in mashing things up, this book is for you! All you need to know about formats, protocols, web services, and web APIs is covered as you learn to write PHP code to remotely consume services like Google Maps, Flickr, Amazon, YouTube, MSN Search, Yahoo!, Last.fm, the Internet UPC Database, and even the California Highway Patrol Traffic data! The 5 real-world PHP projects each start with an overview of technologies and protocols needed and then dive into the tools used and details of creating the project, and you can download each project's source code. You will learn how these technologies work with each other and how to use this information, together with your imagination, to build your own cutting-edge websites.