ZMQSocket::getSockOpt (PECL zmq >= 0.5.0)ZMQSocket::getSockOpt — Get socket option 说明 public ZMQSocket::getSockOpt(string $key): mixed Returns the value of a socket option. 参数 key An integer representing the option. See the ZMQ::SOCKOPT_* constants. 返回值 Returns either a string or an int depending on key. Throws ZMQSocketException on error.