是否有用于PHP的ZeroMQ XSUB套接字的示例

I tried to connect to ZMQ XPUB socket (using http://www.php.net/manual/ru/book.zmq.php) ,but there is no result, code below:

    $context = new \ZMQContext();
    $subscriber = $context->getSocket(\ZMQ::SOCKET_XSUB);
    $subscriber->connect("tcp://11.98.26.100:7775");
    $subscriber->send("\1user_100001.");

    $string = $subscriber->recv();
    echo $string;

The process is nothing received. I found in Is there example of implementation the connection through XSUB socket for PHP ? I looked in http://zguide.zeromq.org/php:_start but there is no exapmle for XSUB socket.