Refactor and clean up some PHP code (link to code provided).

I need someone to refactor and clean up the code found here: [login to view URL] Once you successfully finish refactoring the code, I will create other projects to clean up and refactor more code. I will not specify exactly what I want, but my goal is to improve code quality and you should know how to do this. My concern is not performance (unless it is really really horrible), but maintainability and risk of bugs. In order to complete this project, you need to make a clean pull request on [login to view URL] with your code (I will provide you with access once I see that you can complete this project). You need to specify in your bid some things functions you would improve in the provided code and what you would do with the functions. To ensure that you have actually read all these requirements, I will only consider bids where I can find your freelancer.com username in this form: [login to view URL] You, of course, need to also submit a bid via Freelancer.com.