Marcoevich

$calculateAge = DateTime::createFromFormat('d/m/Y', $birthdate, $tz);
if($calculateAge) {
	$age = $calculateAge->diff(new DateTime('now', $tz))->y;
}

Marcoevich

function phpcodewidget_register_widgets() {
	register_widget( 'PHP_Code_Widget' );
}

add_action('widgets_init', 'phpcodewidget_register_widgets' );