Creating a comment and reply system PHP and MySQL
+----+-----------+------------------------+------------+
| field | type | specs |
+----+-----------+------------------------+------------+
| id | INT(11) | |
| username | VARCHAR(255) | UNIQUE |
| email | VARCHAR(255) | UNIQUE |
| password | VARCHAR(255) | |
| created_at | TIMESTAMP | |
+----------------+--------------+---------+------------+