如何用PHP和MYSQL在逗号分隔的列表中找到最流行的10个值

I am new to all of this and I have Googled and searched on here, but to no avail. Using google and some of the responses here, I've managed to solve a separate problem, but this is what I'm really interested in and am wondering if this is even possible/how to accomplish it. I am new to all of this and I have Googled and