As Greg Beaver mentions, the latest version of the PHP documentation tool, PHPDocumentor has been released - version 1.3.1.
This release addresses a problem with the sourceforge release, as well as a few other minor bugs.
The phpDocumentor tool is a standalone auto-documentor similar to JavaDoc written in PHP. It differs from PHPDoc in that it is MUCH faster, parses a much wider range of php files, and comes with many customizations including 11 HTML templates, windows help file CHM output, PDF output, and XML DocBook peardoc2 output for use with documenting PEAR. In addition, it can do PHPXref source code highlighting and linking.
You can grab this download from either:
