What is the practical use of php file system?

Question

Why we need to create file?How we use the files system? Please give an practical example.

Answer 1

I always thought it was obvious.
you could for example create individual files depending on user input. prefilled pdf forms. images. downloadable statistics. csv or xml files for further usage. or just as a substitution for a database.

Answer 2

@Mario L. thank you☺