Question

I am making a system where a user can get a reward code, but only every 24 hours. I want to insert a record into a MySQL database, that deletes itself 24 hours after being added. This way I can use mysql_num_rows to see if the row is there.

How would I make a mysql row that deletes itself after 24 hours? Or is there an alternative to this, where I can check if specific information has already been used in the past 24 hours?

Answer 1

How about adding an expiration column to the table, and checking that to see if the code is still valid? Additionally, add a redeemed column, where you can mark whether a code has been used.