12.7. The package.xml Format
PEAR packages are released and distributed through gzip-compressed tar files (tarballs). The very first file inside these tarballs is an XML package description file that contains information about the package such as the release version number, which files are included, MD5 checksums for all the files, where they should be installed, and so on.
All this is driven through the XML package description file, called package.xml. Every package has one; it is used when building releases, included in the release tarball, and used by the installer to determine which files go where, among other things.
In this section, you learn everything there is to know about the package description format, and how to make your own package ...
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