I have set up a company intranet website built with PHP/MySQL and allow users to post reviews. After joining up on this website I have grown to like the "comment" function and would like to add that same functionality to allow users to "comment" directly to other users reviews.
Currently all reviews are stored in a single table in the DB.
1) Should I create another table to then store all the comments since there can be many comments per review?
2) Once I figure out where to store these values can the rest of this functionality be built out in PHP or will other programming need to also be introduced?