Âge à partir date naissance

function age($j,$m,$a) {
	$age = (date("Y")-$a-1);
	if ((date("m")) >= $m) {
		if ((date("m")) == $m) {
			if (date("d") >= $j) {
				$age = $age+1;
			}
		}
		else {
			$age = $age+1;
		}
	}
	return $age;
}

function age($birthdate) {
    return floor((time()-$birthdate)/(60*60*24*365));
}

$ddn = mktime(0,0,0,2,11,1985);
echo age($ddn);

function age($birthdate) {
    $now = new DateTime('now');
    $interval = $birthdate->diff($now);
    return $interval->format('%y');
}

$ddn = new DateTime('1985-04-18');;
echo age($ddn);

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