5 Cool php http request library

What is the best php library to use for HTTP POST, GET etc. 

Httpful

Httpful is a simple, chainable, readable PHP library intended to make speaking HTTP sane. It lets the developer focus on interacting with APIs instead of sifting through curl set_opt pages and is an ideal PHP REST client. 

Guzzle

Guzzle is a PHP HTTP client that makes it easy to send HTTP requests and trivial to integrate with web services.

Unirest for PHP

Unirest is a set of lightweight HTTP libraries available in multiple languages.

Requests
Requests is a humble HTTP request library. It simplifies how you interact with other sites and takes away all your worries.Requests中文版使用
Buzz
PHP's lightweight HTTP client