Construct a new ZMQContext object

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- Construct a new ZMQContext object

# ZMQContext::__construct

(PECL zmq >= 0.5.0)

ZMQContext::__construct — Construct a new ZMQContext object

### Description

public ZMQContext::__construct(int `$io_threads` = 1, bool `$is_persistent` = `true`)

Constructs a new ZMQ context. The context is used to initialize sockets. A persistent context is required to initialize persistent sockets.

### Parameters

`io_threads`

  Number of io-threads in the context.

`is_persistent`

  Whether the context is persistent. Persistent context is stored over multiple requests and is a requirement for persistent sockets.

### Errors/Exceptions

Throws ZMQContextException if context initialization fails.

### Examples

Example #1 A ZMQContext() example

Construct a new context and allocate request socket from it

    <?php/* Allocate a new context */$context = new ZMQContext();/* Create a new socket */$socket = $context->getSocket(ZMQ::SOCKET_REQ, 'my sock');/* Connect the socket */$socket->connect("tcp://example.com:1234");/* Send a request */$socket->send("Hello there");/* Receive back the response */$message = $socket->recv();?>