Ds\Map::toArray

(PECL ds >= 1.0.0)

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

Description

public Ds\Map::toArray(): array

Converts the map to an array.

Caution

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

Caution

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.

Note:
Casting to an array is not supported yet.

Parameters

This function has no parameters.

Return Values

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

Examples

Example #1 Ds\Map::toArray() example

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

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

The above example will output something similar to:

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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