How to make changes to the global variable?

Question

Yii

There is a task to create changeable settings such as adding a logo, the ability to change the price of delivery. All this data is now stored in common/config/params.php

1. Is it possible to somehow get the ability to edit common/config/params.php (and even create new ones) parameters?
   
2. If I understand correctly, you can create a table with settings and add all the contents to a global variable. The only question is how to implement it?
   

Answer 1

Good afternoon.
Editing is not worth it, you do not need to climb into it from the admin panel.
Here's a solution , easy to convert to yii2.