If I am new to writing PHP for my graduation project, is it better to write it natively or use a framework?

I want to use PHP to write the background of my graduation project. The functions are not very complicated. Visually, I just need to process some forms, operate several tables in the database, and write an interface. Is it better to write natively, or to learn a framework and use it? I know a little bit about native, but I have never used the framework.