(PHP >= 5.3.0, PECL phar >= 2.0.0)
Compresses all files in the current tar/zip archive
bool PharData::compressFiles ( int $compression )
For tar-based archives, this method throws a BadMethodCallException, as compression of individual files within a tar archive is not supported by the file format. Use PharData::compress() to compress an entire tar-based archive.
For Zip-based archives, this method compresses all file