Ds\Map::toArray

(PECL ds >= 1.0.0)

Ds\Map::toArray — Converts the map to an array

説明

public Ds\Map::toArray(): array

Converts the map to an array.

警告

Maps where non-scalar keys are can't be converted to an array.

警告

An array will treat all numeric keys as integers, eg. "1" and 1 as keys in the map will only result in 1 being included in the array.

注意:
Casting to an array is not supported yet.

パラメータ

この関数にはパラメータはありません。

戻り値

An array containing all the values in the same order as the map.

例

例1 Ds\Map::toArray() example

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

var_dump($map->toArray());
?>

上の例の出力は、たとえば以下のようになります。

array(3) {
  ["a"]=>
  int(1)
  ["b"]=>
  int(2)
  ["c"]=>
  int(3)
}

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User Contributed Notes 1 note

down

-1

foalford at gmail dot com ¶

4 years ago

When using Hashable object as $key, Map::put() will not call the Hashable::hash() on the key until later. For example

<?
class Key implements \Ds\Hashable
{
    protected $id;

    public function __construct($id)
    {
        $this->id = $id;
    }

    public function equals($obj) : bool
    {
        return $this->id == $obj->id;
    }

    public function hash()
    {
        return $this->id;
    }
}
$map = new \Ds\Map();
$myki = new Key('myki');

$map->put($myki, "Value String");

var_dump($map->get($myki));
echo 'Map::put() store the Hashable object and it cause error in toArray()'. PHP_EOL;
var_dump($map->toArray());
?>

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