Have a DB with the following fields.
Reg_Date....The date a attendee registers.
Adult............the number of days the adult will attendee.
other............The number of days other will attendee
early_bird....The number of days the attendee will use early bird.
I need to calculate the number of days prior to the reg_date the adult, other or early_bird will be attending and subtract from the reg_date.
reg_date - adult + other+ early_bird. then display the date the attendee is estimated to arrive.
help please!