php-amqplib is an implementation of the AMQP protocol in PHP. AMQP stands for Advanced Message Queuing Protocol and is an open standard protocol for message-oriented middleware. It is used in production environments for sending and/or consuming over 600 000 messages/day. Requirements:- PHP 5.3 or Higher What's New in This Version:- Adds new SocketIO class + TCP_NODELAY option.