如何从两个不同的项目加载最新的类

Consider below example. I have two projects. I have used common class c in both project. I want to load the latest class c from anyone of the project.

E.g.

Project 1:

class a {
}

if ( ! class_exists( 'c' ) ) :
    class c {
        static $version = '1.0.0';
    }
}

Project 2:

class b {
}

if ( ! class_exists( 'c' ) ) :
    class c {
        static $version = '1.0.2';
    }
}

In above example, I'm expecting to load the class c from Project 2 in both projects because it has latest 1.0.2.

Any suggestions? Thanks in Advance.