ARO uses PHP Reflection to get its job done. Well this library is again flexible and hence I thought I can release it as open source. Its hosted on GitHub (https://github.com/ashwanthkumar/aro-php). Feel free to fork or report an issue.
I tired my best to document it on the GitHub, so let me skip further details here.
Disclaimer: Reason I created this ARO is for using IoC effectively in the first place. Also there are many more advanced Doc Comment parsers in PHP. This module is just what I came up in around 5 hours.