note 92485 deleted from function.date by danbrown

Note Submitter: glenm ---- @seanj : Your logic isn't quite right. A year is a leap year if it's divisible by 4 unless it's also divisible by 100 in which case it needs to be divisible by 400 to be a leap year. 1900: not a leap year 2000: a leap year 2100: not a leap year 2200: not a leap year 2300: not a leap year 2400: a leap year The full logic if not using the date function would be something like this: function is_leap($year) { return ($year%400 == 0) || ($year%4 == 0 && $year%100 != 0); } (I'm not sure why a default of 2004 was included in the previous examples as that makes no sense at all to me.)