The star rating bar allows the user to submit his thoughts on whether the content or product is useful or not. This also gives the administrator a view of how well its item is performing.
It is very common on e-commerce websites.
In this tutorial, I am using the jQuery Bar Rating plugin to display the star ratings on the screen.
Whenever the user changes the rating then send an AJAX request to save the user currently rating status on the MySQL database table with PHP.