indeed very easy. but instead of spending time reinventing this sort of things, i always just run a search at
www.php.net and there are plenty of premade scripts like this one
PHP Code:
/*chris dot shepherd at gmail dot com
27-Aug-2004 05:59
A nice way to calc age seeing that mktime only goes back until 1970 is to use the date function like this... */
<?php
//Find the difference in year, month, and day
$yeardiff = date("Y") - $dobyear;
$monthdiff = date("m") - $dobmonth;
$daydiff = date("j") - $dobday;
/*
* if month or day is negative we have yet to reach it so
* we need to subtract a year seeing we haven't
* reached our birthday yet, else yeardiff is correct
*/
if ($monthdiff <= 0 && $daydiff < 0) {
$age = $yeardiff - 1;
} else {
$age = $yeardiff;
}
echo $age;
?>
on
http://www.php.net/date