PhpZip is a Web/PHP application that manage archives in several formats. The application supports GNU TAR archives (.tar) and compressed (gzip) GNU TAR archives (.tar.gz or .tgz), Zip archives (.zip) and a proprietary format (.piz). The two first formats are "standards" ones, the archives can be read/write by most of the application archivers (WinZip, Pkzip, ...). The last one has a unique fonction, which is to be a PHP auto-extract/auto-exec archive.