We finished a book on building web services using Zend Framework components, available from PHP|Architect.
Inside this book you will find chapters on building web services using SOAP, XML-RPC, JSON-RPC, and REST. Each of the protocols has a complete chapter dedicated to it. You will first understand the concepts and then be introduced to the practical application of the protocol, illustrated with plenty of code samples.
Anyone who as done any programming will know that good web services start by choosing the right protocol but the work doesn’t end there. Topics like securing your web services, how to build ACLs to control access to them, as well as how to build unit tests to test them after each change are discussed in depth.
Grab your copy here:

