How to use phpDocumentor on WordPress (on Mac)

Here are the steps it took for me to get phpDocumentor to create documentation for a WordPress installation.

Steps

1. Open phpDocumentor.ini*
2. Uncomment the line (line 25 for me) starting with "memory_limit"
3. Set memory_limit to "2048M"**
4. Open Terminal and go to the directory above the one your wordpress installation
5. Use phpdoc (takes a few minutes)

Example

phpdoc -o HTML:frames:earthli -d wordpress -t wordpress/docs

* I'm using MAMP and my directory is /Applications/MAMP/htdocs/phpdoc/.
** Probably overkill; consider available RAM. For me, 1024M wasn't enough. I kept getting this error:

phpdoc FAILED: Bad environment variable $PHP (set to "/usr/bin/php")