"Using Facebook Applications, developers can add custom features to one of the most popular websites in the world. Facebook is the biggest social network among college students, and is gaining ground among professionals too. Facebook applications enable you to add new ways for users to interact with each other using Facebook. This book shows PHP developers how to quickly get started building powerful Facebook applications, how to work with data stored in Facebook, including photos, and how to handle multimedia and other custom data within Facebook applications. The book covers how to send notifications and invitations from within an application, update a user's profile, create application control panels for users, and much more"--Resource description page.