date prob. subtracting days

Hi there, I want to subtract todays date from a date in the past and know if this date is more than 14 days back. Somehow I am lost in the date, timestamp, mktime joungle :-) So far I do get the days back, but only if they are in the same month. It just takes care of the day, not of month and year. I know that this could be easily done with mysql functions, but in this case I need to do them in php after getting the whole dataset. Here is the try I made: $date[send] = date('d-m-Y',$row4->timestamp); $date[today] = date("d-m-Y"); $dif = $date[today] - $date[send]; echo $dif; Thanx for any help on that, Regards, Merlin