ZMQSocket::__construct Construct a new ZMQSocket &reftitle.description; ZMQSocket::__construct ZMQContextcontext inttype stringpersistent_idnull callbackon_new_socketnull Constructs a ZMQSocket object. persistent_id parameter can be used to allocated a persistent socket. A persistent socket has to be allocated from a persistent context and it stays connected over multiple requests. The persistent_id parameter can be used to recall the same socket over multiple requests. The on_new_socket is called only when a new underlying socket structure is created. &reftitle.parameters; context ZMQContext object. type The socket type. See ZMQ::SOCKET_* constants. persistent_id If persistent_id is specified the socket will be persisted over multiple requests. If context is not persistent the socket falls back to non-persistent mode. on_new_socket Callback function, which is executed when a new socket structure is created. This function does not get invoked if the underlying persistent connection is re-used. &reftitle.examples; Using callback the bind/connect socket bind("tcp://localhost:12122"); } else { $socket->connect("tcp://localhost:12122"); } } /* Allocate a new context */ $context = new ZMQContext(); /* Create a new socket */ $socket = $context->getSocket(ZMQ::SOCKET_REP, 'server', 'on_new_socket_cb'); $message = $socket->recv(); echo "Received message: {$message}\n"; ?> ]]> The callback signature function on_new_socket_cb(ZMQSocket $socket, string $persistent_id = null); &reftitle.returnvalues; Throws ZMQSocketException on error.