PHPDaemon\Clients\Mongo\Pool::getNonce PHP Метод

    public function getNonce($p, $cb)
    {
        if (!isset($p['opts'])) {
            $p['opts'] = 0;
        }
        $query = ['getnonce' => 1];
        $cb = CallbackWrapper::wrap($cb);
        try {
            $this->request(self::OP_QUERY, pack('V', $p['opts']) . $p['dbname'] . '.$cmd' . "" . pack('VV', 0, -1) . bson_encode($query) . (isset($p['fields']) ? bson_encode($p['fields']) : ''), true, null, function ($conn, $reqId = null) use($p, $cb) {
                if (!$conn) {
                    !$cb || $cb(['$err' => 'Connection error.']);
                    return;
                }
                $conn->requests[$reqId] = [$p['dbname'], $cb, true];
            });
        } catch (\MongoException $e) {
            Daemon::log('MongoClient exception: ' . $e->getMessage() . ': ' . $e->getTraceAsString());
            if ($cb !== null) {
                $cb(['$err' => $e->getMessage(), '$query' => $query, '$fields' => isset($p['fields']) ? $p['fields'] : null]);
            }
        }
    }