如何使用php / mysql为社交社区网站的朋友/关注者设置数据库

everyone, can someone please help me out on this: I am working on a social networking site as a class project, but I can't seem to find a way to setup friends and/or follower/following database. Please help. Thanks everyone. I am working with PHP/MYSQL.everyone, can someone please help me out on thi