<?php
$map = new \Ds\Map(["a" => 1, "b" => 2, "c" => 3]);
$map->reverse();
print_r($map);
?>
Ds\Map Object
(
[0] => Ds\Pair Object
(
[key] => c
[value] => 3
)
[1] => Ds\Pair Object
(
[key] => b
[value] => 2
)
[2] => Ds\Pair Object
(
[key] => a
[value] => 1
)
)