Simple use of constants within a namespace.

namespaces_and_constants.php

<?php
/**
 * Created by PhpStorm.
 * User: jawira
 * Date: 15.03.16
 * Time: 10:03
 */

namespace Dummy\MyTime;
const MONTHS = 12;
const WEEKS = 52;
const DAYS = 365;


namespace Test;
use Dummy\MyTime;

$daysPerWeek = MyTime\DAYS / MyTime\WEEKS;
$daysPerMonth = MyTime\DAYS / MyTime\MONTHS;

echo "Days per week: $daysPerWeek\n";
echo "Days per month: $daysPerMonth\n";