Calculate age (jQuery or PHP) based on date of birth [not based on user input]

Question

I am looking for a JavaScript or PHP script that allows me to calculate somebody\'s age based on his/her date of birth in the mm/dd/yyyy format. I found this ve

Answer 1

Easiest way to calculate age is:

CURRENT YEAR - BIRTH YEAR = AGE  
IF(CURRENT MONTH DAY < BIRTH MONTH DAY) AGE--;

I.E. Years alive but -1 if you haven't had a birthday yet

MONTH DAY is 0301 for 1st March