PayPal APIs: Up and Running - A Developer's Guide

If your web application's success depends on how quickly and easily users can make transactions, then PayPal is a solution you can't afford to overlook. This book helps you determine which PayPal option is best for your situation, and provides step-by-step instructions for implementing the payment method you choose-whether you're accepting money via the Web or mobile devices for products and services, donations, or anything else. You'll find sample code written primarily in PHP and Objective-C, as well as use cases for executing options with PayPal's API.
By the end of this book, you'll have a clear understanding of PayPal and how you can get the most out of its powerful features, no matter how much API programming experience you have. - Learn how to work with the PayPal API, and choose the right integration method for your project - Explore PayPal's Express Checkout option, including its unique workflow and four methods of operation - Examine the Website Payment Pro method-with a focus on direct payments - Consider Adaptive Payments and learn how to set permission levels for their use - Use PayPal in your iOS or Android-based mobile app with the new Mobile Express Checkout method - Test your PayPal implementation with the sandbox