Get context option

# ZMQContext::getOpt

(PECL zmq >= 1.0.4)

ZMQContext::getOpt — Get context option

### Description

public ZMQContext::getOpt(string `$key`): mixed

Returns the value of a context option.

### Parameters

`key`

  An integer representing the option. See the `ZMQ::CTXOPT_*` constants.

### Return Values

Returns either a string or an int depending on `key`. Throws ZMQContextException on error.

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