Answer written by Stig Bakken.
The directory structure of php-src/pear/
matches that of the install tree (by default
/usr/local/lib/php), and are organized as a
simple hierarchy. However, the directory structure of
pear/ is based on what package the files
belong to. Where files are located in each package directory is
completely independent from where they end up being installed,
this is all determined by the package description file.
