PEAR only accepts contributed code which is of high quality
    and which is compliant to the PEAR
    Coding Standards. For you this means that you are using
    code that has a more or less consistent API, is based on the same
    standard components and provides the same error reporting
    mechanism everywhere.
   
    Note that this does not apply for code that is contributed to
    PECL: In PECL all code has
    to follow the PHP coding standards.