version = DupArchiveEngine::DUPARCHIVE_VERSION; $instance->isCompressed = $isCompressed; return $instance; } /** * Write header to archive * * @param resource $archiveHandle archive resource * * @return void */ public function writeToArchive($archiveHandle) { SnapIO::fwrite($archiveHandle, '' . $this->version . '' . ($this->isCompressed ? 'true' : 'false') . ''); } }