PHPのお勉強！

PHP TOP
PHP 8.4.2 Released!

    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)
}

    Found A Problem?

    Learn How To Improve This Page • Submit a Pull Request • Report a Bug
    ＋add a note

    User Contributed Notes 1 note

    up
    -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());
    ?>
    ＋add a note
    To Top