PHP Sort Array By SubArray Value by the 3rd level

Question

I have an array that needs to be sorted by the third level.

I need to order the array by the fullname value. Is this possible?

$array = array(
    'family1' => array(
        'family_data' => array(
            'fullname' => 'Samuel Smith',
            '...' => '...'
        )
    ),
    'family2' => array(
        'family_data' => array(
            'fullname' => 'John Doe',
            '...' => '...'
        )
    ),
    'family3' => array(
        'family_data' => array(
            'fullname' => 'Adrian Chan',
            '...' => '...'
        )
    )
);

Easier reading:

Array
(
    [family1] => Array
        (
            [family_data] => Array
                (
                    [fullname] => Samuel Smith
                    [...] => ...
                )

        )

    [family2] => Array
        (
            [family_data] => Array
                (
                    [fullname] => John Doe
                    [...] => ...
                )

        )

    [family3] => Array
        (
            [family_data] => Array
                (
                    [fullname] => Adrian Chan
                    [...] => ...
                )

        )

)

The desired result would be:

Array
(
    [family3] => Array
        (
            [family_data] => Array
                (
                    [fullname] => Adrian Chan
                    [...] => ...
                )

        )

    [family2] => Array
        (
            [family_data] => Array
                (
                    [fullname] => John Doe
                    [...] => ...
                )

        )

    [family1] => Array
        (
            [family_data] => Array
                (
                    [fullname] => Samuel Smith
                    [...] => ...
                )

        )

)

(The code before your recent edit would have been better, as we can copy-paste it into our editor to test. (Which I did.)) — Dogbert, May 16 '13 at 08:17
stackoverflow.com/questions/15062210/how-do-i-sort-the-follwing-array — Prasanth Bendra, May 16 '13 at 08:18

score 4 · Accepted Answer · answered May 16 '13 at 08:11

Use uasort

uasort — Sort an array with a user-defined comparison function and maintain index association

uasort($array, function($a, $b) {
    return strcmp($a['family_data']['fullname'], $b['family_data']['fullname']);
});

Test:

$array = array(
    'family1' => array(
        'family_data' => array(
            'fullname' => 'Ben Smith',
            '...' => '...',
            '...' => '...'
        ),
        '...' => '...',
        '...' => '...'
    ),
    'family2' => array(
        'family_data' => array(
            'fullname' => 'John Doe',
            '...' => '...',
            '...' => '...'
        ),
        '...' => '...',
        '...' => '...'
    ),
    'family3' => array(
        'family_data' => array(
            'fullname' => 'Aen Smith',
            '...' => '...',
            '...' => '...'
        ),
        '...' => '...',
        '...' => '...'
    ),
);

uasort($array, function($a, $b) {
    return strcmp($a['family_data']['fullname'], $b['family_data']['fullname']);
});

print_r($array);

Output:

Array
(
    [family3] => Array
        (
            [family_data] => Array
                (
                    [fullname] => Aen Smith
                    [...] => ...
                )

            [...] => ...
        )

    [family1] => Array
        (
            [family_data] => Array
                (
                    [fullname] => Ben Smith
                    [...] => ...
                )

            [...] => ...
        )

    [family2] => Array
        (
            [family_data] => Array
                (
                    [fullname] => John Doe
                    [...] => ...
                )

            [...] => ...
        )

)

How would you changethe ordering, sorting by ASC or DESC? – Dan Sep 12 '18 at 15:57 — Dan, Sep 12 '18 at 15:57

Prasanth Bendra · Answer 2 · 2013-05-16T08:23:37.433

1

Try this :

$sort = array();
foreach($your_array as $k=>$v) {
    $sort['fullname'][$k] = $v['family_data']['fullname'];
}

array_multisort($sort['fullname'], SORT_ASC, $your_array);


echo "<pre>";
print_r($your_array);

edited May 16 '13 at 08:23

answered May 16 '13 at 08:17

Prasanth Bendra

31,145
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73

score 0 · Answer 3 · answered May 16 '13 at 08:14

0

http://www.php.net/manual/en/function.array-multisort.php Take a look at example 3, I think that would help you out.

answered May 16 '13 at 08:14

Matheno

4,112
6
36
53

score 0 · Answer 4 · edited May 23 '17 at 11:49

0

Sort array of objects by object fields You can do that using the PHP usort function http://php.net/manual/en/function.usort.php

edited May 23 '17 at 11:49

Community

1
1

answered May 16 '13 at 08:14

Kld

6,970
3
37
50

PHP Sort Array By SubArray Value by the 3rd level

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