I developed a PHP / MySQL based testing engine for studying purposes. I want to migrate this functionality to a standalone application for things that cannot be published on the web publicly.
Overall, I am very fluent with PHP as a language and feel very comfortable working with it. Can any of you suggest what some of the easier development paths are to choose from? I thought about C#, but I think that may be overkill for what I want to do, in addition to the learning curve of the language coming from PHP (namespaces, public / private functions, etc).
tl;dr : What's the easiest language to write a standalone windows application in if you are already familiar with PHP?