SrtParser\srtFileEntry::shift PHP Метод

    public function shift($time = 0)
    {
        if (!is_numeric($time)) {
            return false;
        }
        if ($time == 0) {
            return true;
        }
        $start = $this->getStart();
        $stop = $this->getStop();
        $this->setStart($start + $time);
        $this->setStop($stop + $time);
        return true;
    }