0mq.php

<?php
require_once __DIR__.'/../app/bootstrap.php.cache';
require_once __DIR__.'/../app/AppKernel.php';
require_once __DIR__.'/../app/AppCache.php';

use Symfony\Component\HttpFoundation\Request;

// Boot Kernel
$kernel = new AppKernel('prod', false);
$kernel->loadClassCache();
$kernel->boot();
$cacheKernel = new AppCache($kernel);

$context = new ZMQContext(1);

//  Socket to talk to clients
$responder = new ZMQSocket($context, ZMQ::SOCKET_REP);
$responder->bind("tcp://*:5556");

// Start application thread
while (true) {
    //  Wait for next request from client
    $request = unserialize($responder->recv());

    $response = $cacheKernel->handle($request);

    //  Send reply back to client
    $responder->send(serialize($response));
}