Guzzle

Guzzle, an extensible PHP HTTP client

Promises/A+ library for PHP with synchronous support

Provides an implementation of the Guzzle Command library that uses Guzzle service descriptions to describe web services, serialize requests, and parse responses into easy to use model structures.

Signs Guzzle requests using OAuth 1.0

Provides the foundation for building web service clients with Guzzle

A node.js server and a PHP controller class one can use when testing

Expands RFC 6570 URI templates