How to start developing user ratings?

Question

PHP

Among the course, the basic one found a basic administrator guide , but I can’t find examples of implementing user authority (rating) for a developer.
Can anyone come across!?
What I understand by user authority:

Are there any implementation examples? Can you share?

Answer 1

To do this, you can use the ratings module.
You can quickly understand how it works and how to set it up simply by installing, for example, a typical online store. There is a rating for the goods. The rating value is written to the product property. In your case, you can create a custom field on the user and write the rating value there

Answer 2

I have added a new custom property "Rating" whose type is "Numeric". You need to decide what number will be 5 stars. I took 100 votes for a user that's 5 stars.
On the site in the user profile, the + and - buttons are clicked on to send an Ajax request to a PHP script that changes the value of the "Rating" property in the right direction.
Well, the stars themselves were filled with the background to the desired percentage