Deleting from db

i am trying to set up a page so when people submit data to it it will delete anything that is a week older or more i have the date entered in as $date = date(mj); $old = date( "mj", mktime(0, 0, 0, date(m), date(d)-7, 0)); now how to match it up can i do < > in the db call or not so delete from user_temp where date > $old Thanks for the help Alan