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 . 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