use AsyncPHP\Assistant\Proxy\DoormanProxy;
use AsyncPHP\Doorman\Manager\ProcessManager;
use AsyncPHP\Remit\Location\InMemoryLocation;
$proxy = new DoormanProxy(
    new ProcessManager(),
    new ZeroMqServer(
        new InMemoryLocation("127.0.0.1", 5555)
    )
);
$proxy
    ->parallel(function() {
        // do this task in a separate process
    })
    ->synchronous(function() {
        // ...then do this task in the parent process
    })
    ->parallel([
        function() {
            // ...then do this task in a separate process
            $this->emit("custom event", ["hello world"]);
        },
        function() {
            // ...and do this at the same time, in a separate process
        },
    ]);
$proxy->addListener("custom event", function($message) {
    print "custom event emitted with: {$message}";
});
while ($proxy->tick()) {
    usleep(25000);
}