Description:

The HTTP extension aims to provide a convenient and powerful set of
functionality for major applications.

The HTTP extension eases handling of HTTP URLs, dates, redirects, headers
and messages in a HTTP context (both incoming and outgoing). It also provides
means for client negotiation of preferred language and charset, as well as
a convenient way to exchange arbitrary data with caching and resuming
capabilities.

Also provided is a powerful request and parallel interface.

Version 2 is completely incompatible to previous version.

Note:
. php-pecl-http1 provides API version 1
. php-pecl-http provides API version 2

Documentation : http://devel-m6w6.rhcloud.com/mdref/http