I created in practice a simple project in php, where you need to fill in a culinary database in forms and look through tables from this database, it looks like a bunch of php files in one folder. I was told that projects do not do that, that it is necessary to have some kind of .htaccess file, all functions in one file, so that everything is neat, etc. I think knowledgeable people understand how everything should look and what kind of porridge I made.
We need an example of creating a web project according to all modern rules.