Chapter 33. Connecting to Web Services with XML and SOAP
In the past few years, Extensible Markup Language (XML) has become an important means of communication. In this chapter, you use Amazon's Web Services interface to build a shopping cart on your website that uses Amazon as a back end. (This application is named Tahuayo, which is the name of an Amazonian tributary.) You use two different methods to do this: SOAP and REST. REST is also known as XML over HTTP. You use PHP's built-in SimpleXML library and the external NuSOAP library to implement these two methods.
In this chapter, we discuss the following topics:
Understanding XML and SOAP basics
Using XML to communicate with Amazon
Parsing XML with PHP's SimpleXML library
Caching responses
Talking ...
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