Archives based on the tar file format follow the more modern USTAR
file format. The design of the tar file header makes them more efficient
to access than the zip file format, and almost as efficient as the phar
file format. File names are limited to 255 bytes, including
full path within the phar archive. There is no limit on the number of files
within a tar-based phar archive. These archives can fully compressed in
gzip or bzip2 format and still be executed by the Phar extension.
To compress an entire archive, use Phar::compress().
To decompress an entire archive, use Phar::decompress().