function splQueueMerge() {
    $args = func_num_args();

    if( $args == 0  ) {
        return new SplQueue();
    }

    $buffer = func_get_arg(0);

    if (!($buffer instanceof SplQueue)) {
        throw new \RuntimeException();
    }

    $buffer->rewind();

    for ($i = 1; $i < $args; $i++) {
        $queue = func_get_arg($i);

        if (!($queue instanceof SplQueue)) {
            throw new \RuntimeException();
        }

        for($queue->rewind(); $queue->valid(); $queue->next()) {
            $buffer->enqueue($queue->current());
        }
    }

    return $buffer;
}