PHP > = 5.3.0
# object oriented$from = new DateTime('1970-02-01');$to = new DateTime('today');echo $from->diff($to)->y;# proceduralecho date_diff(date_create('1970-02-01'), date_create('today'))->y;[**demo**](https://eval.in/84187)
功能：
date_create()，
date_diff()
MySQL > = 5.0.0
SELECT TIMESTAMPDIFF(YEAR, '1970-02-01', CURDATE()) AS age
[**demo**](http://sqlfiddle.com/#!2/d41d8/23465)
功能：
TIMESTAMPDIFF()，
CURDATE()
