How to sort array based on subarray value in PHP

Question

I have array like this

Array
(
    [0] => Array
        (
            [id] => 16059
            [product_id] => 4013
            [Product] => Array
                (
                    [id] => 4013
                    [name] => XYZ
                )

        )

    [1] => Array
        (
            [id] => 16060
            [product_id] => 4462
            [Product] => Array
                (
                    [id] => 4462
                    [name] => MNOP
                )

        )

    [2] => Array
        (
            [id] => 16061
            [product_id] => 4473
            [Product] => Array
                (
                    [id] => 4473
                    [name] => ABCD
                )

        )
)

How to short this array using Product > name in ascending order. I can do using for-each loop, but there is any method to without loop ?

"without loop" not really, because also the native functions (usort) loop under the hood. [usort](https://www.php.net/manual/en/function.usort.php) would be one way to go btw. — Jeff, Jun 13 '19 at 07:27
_“that have different array”_ - so what? Then adapt it accordingly, after you made the effort to understand how this works in principle … — 04FS, Jun 13 '19 at 07:30
array_multisort(array_column(array_column($arr, 'Product'),'name'), SORT_ASC, $arr); — Rakesh Jakhar, Jun 13 '19 at 07:41

score 3 · Answer 1 · answered Jun 13 '19 at 07:31

3

Use usort() with strcmp():

usort($array, function($a, $b) {
   return strcmp($a['Product']['name'] , $b['Product']['name']);
});

print_r($array);

Output:- https://3v4l.org/Cb5S5

answered Jun 13 '19 at 07:31

Alive to die - Anant

70,531
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score 1 · Accepted Answer · answered Jun 13 '19 at 07:30

1

Try -

usort($array, function($a, $b) {
    return $a['Product']['name'] > $b['Product']['name'];
});

usort()

answered Jun 13 '19 at 07:30

Sougata Bose

31,517
8
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4

With case of strings it's better to use `strcmp` because with `>` your strings will be converted to ints, I presume. – u_mulder Jun 13 '19 at 07:31
Yes, they will be converted. But if they are only strings then it should word as it will compare in alphabetical order. – Sougata Bose Jun 13 '19 at 07:32

Rahul · Answer 3 · 2019-06-13T07:36:39.640

1

Here is the snippet,

$t = [];
foreach ($arr as $key => $value) {
    $t[$key] = $value['Product']['name'];
}
array_multisort($t, SORT_ASC, $arr);

First, fetch the data of that name and create an array.
Pass the relevant array for sorting criteria to a multidimensional array.

Demo.

edited Jun 13 '19 at 07:36

answered Jun 13 '19 at 07:31

Rahul

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How to sort array based on subarray value in PHP

3 Answers3