PHP4 - Php User Documentation Tool Similar To Grails Gdoc

I have been using Grails gdoc for few of my grails project, and I like it quite well for user help and support documentation like a manual.
I am looking for something similar in PHP. I found php-maven offers in its sites. PHP-Maven Sites Documentation.
But do we have any other tool that could support the user guide and documentation support for PHP like grails gdoc? I prefer composer support for the same.