PayPal Payments Pro/Adaptive Payments PHP Class Library includes methods to easily integrate all of PayPal's APIs, including PayPal Payments Pro and Adaptive Payments. It makes it extremely quick and easy to tie PayPal into your applications. It comes with template solution files for nearly every API call available. All you have to do is populate the request parameters, and you'll get a PHP array result which includes everything you'll need from the API call.
PunyURL is a class that can be used to create short URLs using the Puny sapo.pt Web services API. It can send an HTTP request to the services.sapo.pt Web services API to create a short URL for another given URL. The class can also do the opposite, i.e. get the original URL associated to a previously created short URL.