This plugin was created during basic course of Plugin Development. Later we decided to distribute this code so students can use it and even try to improve it for educational purpose on github.
After some contributions and improvements, we thought it might be useful for many WordPress lovers out there in WordPress plugins repository.
Feel free to help us improve.
Github repository: https://github.com/wpacademy/wpac-like-system
[WPAC_LIKE_SYSTEM] Display Like & Dislike buttons in post or page. [WPAC_LIKE_COUNT] Return Like count for current post being viewed. [WPAC_LIKE_COUNT id="123"] Return Like count for given post ID. [WPAC_LIKE_COUNT string="Liked % times"] Return Like count wrapped in a string, use `%` where you want to display count value.