laravel - How to implement this kind of business logic? Pets work offline and grow regularly, how to achieve it with php+mysql

Question

How to implement this business logic? Pets work offline and grow regularly, how to achieve it with php+mysql

Answer 1

Make a table with two columns, one records the initial offline timestamp, and the other records the next online timestamp,

Answer 2

Two tables, one table records the online and offline time, and the other table records the work record and growth record. . .