Professional Web APIs with PHP. eBay, Google, PayPal, Amazon, FedEx, Plus Web Feeds

This chapter introduced the following major APIs and examined their use:

• National Weather Service, including information on how to obtain detailed weather forecasts for a specific region.

• Flickr, including information on obtaining images in a variety of different ways.

• Del.icio.us, including information on how to obtain your own bookmarks, and implementing your own caching system to reduce total requests.

This concludes the coverage of existing APIs. The next chapter introduces the major topics of concern when building your own API for others to use, and goes through a series of code examples along those lines.