Implementation of RFC 863 aka /dev/null as a service, using React.

devnull.php

<?php

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

$loop = React\EventLoop\Factory::create();
$socket = new React\Socket\Server($loop);

$socket->on('connection', function ($conn) {
    $devNull = new React\Stream\WritableStream();
    $conn->pipe($devNull);
});

$socket->listen(9);
$loop->run();