(PECL zmq >= 1.0.4) Get context option public
(PECL zmq >= 0.5.0) Construct a new ZMQContext object
(PECL zmq >= 0.5.0) Create a new socket public
(PECL zmq >= 1.0.4) Set a socket option public
(PECL zmq >= 0.5.0) Whether the context is persistent