How does PHP save setting information locally?

Question

For example, there are many forms in a php page, which require users to fill in some information parameters.

Generally, these information parameters are saved in the database, right? The next time the user opens it, it will be read from the database and filled in automatically.

What I’m thinking about now is whether these information parameters can be saved on the user’s local computer! Is it by reading and writing files? Or is there any other dedicated way to read and write configuration?

(When I wrote desktop software before, I always saved the configuration items locally and opened the software to read them directly)

Answer 1

I really want to find relevant information. The method of reading and writing php.ini configuration files should be similar to the desktop software I wrote before. Research and study