Manage user warnings
问题 I'm not used to work with values that should decrement every a timelapse like for a user warned, for example a warn which persist for 30 days that can reach a maximum value of 3 warns before the user get banned I thought to design a user table like this but now I should work on it, I find it not useful on decrementing the values every 30 days: table_user - username - email - warnings (integer) - last_warn (timestamp data type) should I use some php timer? does exist any standard tecnique on