reactphp/zmq

<?php

require __DIR__.'/../vendor/autoload.php';

$loop = React\EventLoop\Factory::create();

$context = new React\ZMQ\Context($loop);

$pull = $context->getSocket(ZMQ::SOCKET_PULL);
$pull->bind('tcp://127.0.0.1:5555');

$pull->on('error', function ($e) {
    var_dump($e->getMessage());
});

$pull->on('message', function ($msg) {
    echo "Received: $msg\n";
});

$loop->run();