Inherited a PHP nightmare, where to start? [closed]

Answer 1

I would:

1. Sit down and take a deep breath;
2. Decide if that's really where you want to work;
3. Assuming yes, then I would roll up my sleaves, pick one mess to work on at a time and get to work.

I know that we can't limit ourselves to just one task at a time; however, you can limit your work to solving one mess at a time while working on the daily tasks that come in.