It's definitely not as easy as it sounds.

Say you were given somebody's birthday. The year, the month, and the day. For our example we will use 1970/05/05 (May 5th, 1980).

Now we take today's date, 2011/02/21 (Feb 21st, 2011).

What I've done is removed the slashes, and then subtracted today's date from the user's birthday, with a decimal after the year. Example:

2011.0221 - 1970.0505

The result given is not correct, however. This is because of leap years, and months having a different number of days.

How could I calculate an age when given a birthday?

I have also tried converting the string to base12, and then subtracting, but it's still off.

I've thought about it, and come up with a solution. Does PHP have any sort of time function (I know of strtotime), one that could calculate this sort of thing?

Thanks!!

Have you tried using strtotime() which will convert a string into an unix timestamp integer?

I have, but I don't know if you can simply just subtract the two values it would give you, could you?

http://www.php.net/manual/en/functio...iff.php#102245

Thanks, chrishirst!