enum-example.php

<?php

require_once __DIR__ . '/vendor/autoload.php';

use YourNamespace\Enums\Compass;

$north = Compass::North();
$south = Compass::South();
$east = Compass::East();
$west = Compass::West();

$values = Compass::values(); // [$north, $south, $east, $west]
$n = Compass::valueOf('North');

$north->equals(Compass::North());  // true
$north->equals($n); // true
$north->equals($south); // false
$north->equals('North'); // false

$north->toString(); // 'North'