/**
* Get file chunk content
* @param $chunkId string chunk Id
* @return bool|string
*/
public function getChunkContent($chunkId)
{
$length = Config::get(Config::KEY_FILE_CHUNK_SIZE);
$offset = (int) substr($chunkId, -1) * $length;
return FileUtil::fileToString($this->path, $offset, $length);
}
