Complete inline documentation comment blocks (docblocks)
    must be provided. Please read the
   Sample File and
   Header Comment Blocks
   sections of the Coding Standards to learn the specifics
   of writing docblocks for PEAR packages.
   Further information can be found on the
   phpDocumentor website.
  
   Non-documentation comments are strongly encouraged. A general rule of
   thumb is that if you look at a section of code and think
   "Wow, I don't want to try and describe that",
   you need to comment it before you
   forget how it works.
  
   C style comments (/* */) and standard C++ comments (//) are both
   fine. Use of Perl/shell style comments (#) is discouraged.