Returns a reversed copy

# Ds\Map::reversed

(PECL ds >= 1.0.0)

Ds\Map::reversed — Returns a reversed copy

### 说明

public function Ds\Map::reversed(): Ds\Map

Returns a reversed copy of the map.

### 参数

此函数没有参数。

### 返回值

A reversed copy of the map.

> 注意:

> The current instance is not affected.

### 示例

示例 #1 Ds\Map::reversed() example

    <?php
    $map = new \Ds\Map(["a" => 1, "b" => 2, "c" => 3]);

    print_r($map->reversed());
    ?>

以上示例的输出类似于：

    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
            )

    )

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