calculate age help !

Hi all,

I need to calculate a members age and display it like- 34 ect.

Problem - I have have the members - birth year in one column, birth month, in another and birth day in another, all in one table.

for example-

m_year m_month m_day

How could I calculate their age to display like 34, 21 ect !

Do i compare it to todays date?

 

function birthday ($year, $month, $day)
{
$year_diff = date("Y") - $year;
$month_diff = date("m") - $month;
$day_diff = date("d") - $day;
if ($month_diff < 0) $year_diff--;
elseif (($month_diff==0) && ($day_diff < 0)) $year_diff--;
return $year_diff;
}

echo birthday("1980","7","2");
?>

Code (markup):

 

function checkCurAge($year,$month,$day='') {

$day=(empty($day))?'1':$day;

list($this_year, $this_month, $this_day) = explode(' ',date('Y n j'));
$age = $this_year - $year;

if ($month>$this_month||($this_month==$month&&$this_day<$day)) {
$age--;
}

return $age;

}