How to expand a dot notation array into a full multi-dimensional array

Question

In my Laravel project, I have a dot notation array which I need to convert to a multi-dimensional array.

The array is something like this:

$dotNotationArray = ['cart.item1.id' => 15421a4, 
                 'cart.item1.price' => '145',
                 'cart.item2.id' => 14521a1,
                 'cart.item2.price' => '1245'];

How can I expand it to an array like:

    'cart' => [
        'item1' => [
            'id' => '15421a4',
            'price' => 145
        ],
        'item2' => [
            'id' => '14521a1',
            'price' => 1245,
        ]
    ]

How can I do this?

Related stackoverflow.com/questions/45089729/…

mickmackusa
– mickmackusa ♦

2018-02-12 07:04:47 +00:00
Commented Feb 12, 2018 at 7:04 — mickmackusa
– mickmackusa ♦, Commented Feb 12, 2018 at 7:04

Sk446 · Accepted Answer · 2021-03-07 00:04:14Z

8

In Laravel 6+ you can use Arr::set() for this:

The Arr::set method sets a value within a deeply nested array using "dot" notation:

    use Illuminate\Support\Arr;


    $multiDimensionalArray = [];

    foreach ($dotNotationArray as $key => $value) {
        Arr::set($multiDimensionalArray , $key, $value);
    }

    dump($multiDimensionalArray);

If you are using Laravel 5.x you can use the array_set() instead, which is functionally identical.

Explanation:

Arr::set() sets value for a key in dot notation format to a specified key and outputs an array like ['products' => ['desk' => ['price' => 200]]]. so you can loop over your array keys to get a multidimensional array.

edited Mar 7, 2021 at 0:04

Sk446

1,2393 gold badges19 silver badges38 bronze badges

answered Feb 12, 2018 at 6:46

Sapnesh Naik

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