That's crazy. Are you going to HIRE A DEV for fixing a proof-of-concept app like this? Stop. This is where you should be learning to do things, not hiring a dev

That's crazy. Are you going to HIRE A DEV for fixing a proof-of-concept app like this? Stop. This is where you should be learning to do things, not hiring a dev for writing such simple small apps for you. Since you're learning right now, find a framework (best if not PHP, but it can be a PHP framework) and follow the tutorial. You'll learn some "backend", and you'll learn it with best practices and with things in the right place.