ZMQContext::getOpt (PECL zmq >= 1.0.4)ZMQContext::getOpt — Get context option 说明 public ZMQContext::getOpt(string $key): mixed Returns the value of a context option. 参数 key An integer representing the option. See the ZMQ::CTXOPT_* constants. 返回值 Returns either a string or an int depending on key. Throws ZMQContextException on error.