Pagekit\Installer\SelfUpdater::getFileList PHP Метод

    protected function getFileList($file)
    {
        $list = [];
        $zip = new \ZipArchive();
        if ($zip->open($file) === true) {
            for ($i = 0; $i < $zip->numFiles; $i++) {
                $list[] = $zip->getNameIndex($i);
            }
            $zip->close();
            return $list;
        } else {
            throw new \RuntimeException('Can not build file list.');
        }
    }