function send($client, $msg) {
    $msg = base64_encode($msg);
    $b1 = 0x80 | (0x1 & 0x0f);
    $length = strlen($msg);
    if ($length <= 125)
        $header = pack('CC', $b1, $length);
    elseif ($length > 125 && $length < 65536)
        $header = pack('CCn', $b1, 126, $length);
    else
        $header = pack('CCN', $b1, 127, $length);
    $msg = $header.$msg;
    socket_write($client, $msg, strlen($msg));
}
$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
socket_bind($socket, '127.0.0.1', 8000);
socket_listen($socket);
$client = socket_accept($socket);
$handshake = socket_read($client, 1024);
preg_match('/Sec-WebSocket-Key\: (.+?)\r\n/', $handshake, $accept);
$accept = base64_encode(sha1("$accept[1]258EAFA5-E914-47DA-95CA-C5AB0DC85B11", true));
$handshake = "HTTP/1.1 101 Switching Protocols\r\n";
$handshake .= "Upgrade: websocket\r\n";
$handshake .= "Connection: Upgrade\r\n";
$handshake .= "Sec-WebSocket-Accept: $accept\r\n\r\n";
socket_write($client, $handshake.chr(0), strlen($handshake.chr(0)));
send($client, 'hello');
sleep(5);
socket_close($client);
socket_close($socket);