client.php

<?php
    require_once 'vendor/autoload.php';

try {
    $w = new Hoa\Socket\Client('tcp://127.0.0.1:8889');
    $client = new Hoa\Websocket\Client($w);
    $client->on('open', function ( Hoa\Core\Event\Bucket $bucket ) {
        echo 'Websocket opened!';
        return;
    });

    $client->on('message', function ( Hoa\Core\Event\Bucket $bucket ) {
        $data = $bucket->getData();
        echo 'received message: ', $data['message'], "\n";
        return;
    });
    $client->on('close', function ( Hoa\Core\Event\Bucket $bucket ) {
        $data = $bucket->getData();
        echo 'closure code: ', $data['code'], "\n";
        echo 'closure reason: ', $data['reason'], "\n";
        return;
    });

    $client->on('error', function ( Hoa\Core\Event\Bucket $bucket ) {
        $data = $bucket->getData();
        echo 'Websocket error : ', $data['exception'], "\n";
        return;
    });

    $client->setHost("127.0.0.1");
    $client->connect();
    $client->send('foobar');
    echo $client->receive();
    $client->close();
}
catch(Exception $ex) {
    echo $ex;
}
?>

composer.json

{
    "repositories": [{
            "type": "vcs",
            "url": "http://github.com/Hywan/websocket"
        }

    ],
    "name": "Julien/ws",
    "require": {
        "hoa/websocket": "dev-blocking"
    },
    "minimum-stability": "dev"
}

server.php

<?php
    require_once 'vendor/autoload.php';

try {
    $s = new Hoa\Socket\Server('tcp://127.0.0.1:8889');
    $server = new Hoa\Websocket\Server($s);
    $server->on('open', function ( Hoa\Core\Event\Bucket $bucket ) {
        echo 'Open'."\r\n";
        return;
    });

    $server->on('message', function ( Hoa\Core\Event\Bucket $bucket ) {
        $data = $bucket->getData();
        echo $data['message']."\r\n";
        return;
    });
    $server->on('close', function ( Hoa\Core\Event\Bucket $bucket ) {
        $data = $bucket->getData();
        echo 'Close : '.$data['code'].'('.$data['reason'].')'."\r\n";

        return;
    });

    $server->on('error', function ( Hoa\Core\Event\Bucket $bucket ) {
        $data = $bucket->getData();
        echo 'Error : '.$data['exception']."\r\n";
        return;
    });

    $server->run();
}
catch(Exception $ex) {
    echo $ex;
}
?>

et le tout sur windows 7 64bits