Hprose\Service::setTimer PHP Method

    private function setTimer(ArrayObject $topics, $topic, $id)
    {
        $t = $topics[$id];
        if (!isset($t->timer)) {
            $self = $this;
            $t->timer = $this->timer->setTimeout(function () use($self, $topics, $topic, $id) {
                $self->offline($topics, $topic, $id);
            }, $t->heartbeat);
        }
    }