The FlightAware NuSOAP PHP Sample Code demonstrates how to access the API with PHP4 or PHP5, NuSOAP, and Fedora-based systems. Developers can save the provided file (testsoap.php) and substitute a username and API Key.
Flight price tracker Yapta's value proposition sounds a bit like Robin Hood of the travel industry. It will not only track travel prices for you, but to help you get a refund should the price of your reservation fall after you’ve booked it. I wouldn’t be surprised if Yapta can also be used to retrieve kittens from high branches, but that part of the Yapta API isn’t documented yet.
Transport for London (TfL) expanded the open Transport for London API last week to include real-time data on bus information. Bus information that is usually posted in bus shelters is now available via the API. TfL already uses the data feeds that will be available via the API for its internal SMS service and TfL website. Londoners have already benefited from available data via text message updates regarding bus schedules. Now, developers outside TfL gain access to the same data TfL texts to Londoners on a daily basis.