Hello. I'm preety new to php and web development and I've written a large scale development using php and I want to be able to work on it on my windows machine. But does anyone know of an istallation so I can just straight up run php scripts on windows??? Thanks.

You'll need PHP installed, apache and most likely MySQL. All of those come in the Xampp package for windows, whic you can get from here
It's a lot easily than installing them separately

Try using Ampps.. this comes with a nice control panel and will get you started alot faster.

Ampps

Thank you for the input!!!