Like and Unlike System in PHP and MYSQLi

Hey, What’s up everybody I am back with another new post on like and unlike system in PHP,MySQLi, and w3.css.
As you guys know that nowadays every social network or a blog or any kind of community website uses like and unlike system so that one can like one’s shared posts and express their feeling on their thoughts and liking the post is the way we can tell them that we liked the post or not.