Notes About the Second Edition

The first edition version of this book, authored by Michael Balderas, essentially presented a consolidation of PayPal’s online documentation and PHP sample code that focused on using the Name-Value Pairs (NVP) APIs for accessing a variety of the most commonly used PayPal products such as Express Checkout, Website Payments Pro, and Adaptive Payments. This edition builds upon that important—albeit fairly abstract—foundation with expanded content, including additional coverage on the exciting new Express Checkout for Digital Goods product and Instant Payment Notifications (IPNs), and includes accompanying sample project code that concretely pulls it all together with a realistic web ....