Book Image

Facebook Application Development with Graph API Cookbook

By : Shashwat Srivastava, Apeksha Singh
Book Image

Facebook Application Development with Graph API Cookbook

By: Shashwat Srivastava, Apeksha Singh

Overview of this book

<p>With a user base of nearly 800 million people, Facebook is the number one social networking platform. Applications can be created to interact with this huge user base in various ways both inside and outside Facebook. These applications, if developed effectively and efficiently, offer a free medium for promotion and publicity of a product or an organization.<br /><br />Facebook Application Development with Graph API Cookbook covers both the concepts and implementations necessary to develop Facebook applications and provides ready to use code for common scenarios faced by a developer while creating these applications. It incorporates the newly launched Facebook Graph API and also presents the reader with some intuitive ready to use applications.<br /><br />This book guides the reader step by step, from start to finish, through various stages of Facebook application development. It begins by exploring the Facebook application registration and discussing the verification and authentication technique. It then takes you through the various ways in which you can use Facebook Graph API for interacting with users such as posting on a user’s wall, tagging a user in a picture, etc. Accessing complex Facebook user data by formulating a series of queries, doing client side scripting and incorporating Facebook Dialog interface are some other features that have been incorporated in this book. Integration of various Facebook Social Plugins such as the like box in your web page has also been discussed. Further you will get to know the concept of virtual currency and how to programmatically derive Facebook analytics data. As the book progresses, you will learn to use and integrate many more advanced features in Facebook application development. The book contains ready to use code that can be deployed instantly. Towards the end, the book houses a variety of ready to use Facebook applications so as to help readers derive their own applications from them.</p>
Table of Contents (18 chapters)
Facebook Application Development with Graph API Cookbook
Credits
About the Authors
About the Reviewer
www.PacktPub.com
Preface
Index

Tagging users in a picture


Tagging is used to identify different people present in a picture. It is an effective way to notify and involve user's friends while posting a picture, thereby increasing popularity of your application. For applications such as Polaroid, Best Friends, and so on, it becomes imperative to tag user's friends in the picture.

Getting ready

You should have created config.php and index.php as explained in the beginning of this chapter. You should know the IDs of the users you want to tag in a picture. Generally, an application dynamically creates a picture and then tags various users in it. If it is not the case, then you need to implement a suitable upload mechanism and should know the path where you have uploaded and saved the picture, which you want to post on behalf of the current user. Additionally, you need publish_stream permission for successfully publishing the picture.

How to do it...

The following steps will demonstrate how to tag users in a picture:

  1. Open index...