View file system/core/age.php

<?php
function age($date) 
{
	$date = explode('.', $date); 
	$m = date('n'); 
	$year = date('Y')-$date[2]-1; 
	if ($m > $date[1]) {
		$year++;
	}
	if ($m == $date[1]) {
		if (date('j') >= $date[0]) {
			$year++;
		}
	}
	$vv = abs($year) % 100;
	$vv2 = $year % 10;
	if($vv > 10 && $vv < 20) {
		$let = 'лет';
	} else if($vv2 > 1 && $vv2 < 5) {
		$let = 'года' ; 
	} else if($vv2 == 1) {
		$let = 'год' ; 
	} else {
		$let = 'лет' ;
	}
	return '(' . $year . ' ' . $let . ')'; 
}
?>