Sorting Php associative array based on key value

Question

Ok guys, I have an php associative array in the following format .

groupdata: Array
(
    [0] => Array
        (
            [id] => 3324
            [name] => Testme2
            [creationDate] => 31-MAR-14 04.18.29.618000 PM

        )

    [1] => Array
        (
            [id] => 3325
            [name] => paris
            [creationDate] => 31-MAR-14 06.43.28.291000 PM
        )

    [2] => Array
        (
            [id] => 3236
            [name] => GL_HF
            [creationDate] => 29-MAY-14 12.42.01.444000 PM
        )

    [3] => Array
        (
            [id] => 3251
            [name] => attempting
            [creationDate] => 24-FEB-14 03.47.54.732000 PM
        )

    [4] => Array
        (
            [id] => 3272
            [name] => Testme
            [creationDate] => 03-MAR-14 11.24.58.671000 AM
        )
)

Now I want to sort this array based on their names. How can i achieve this ?

I have tried to use ksort/asort methods but it is not wroking.

The desired array is :

groupdata: Array
(
 [0] => Array
        (
            [id] => 3251
            [name] => attempting
            [creationDate] => 24-FEB-14 03.47.54.732000 PM
        )
[1] => Array
        (
            [id] => 3236
            [name] => GL_HF
            [creationDate] => 29-MAY-14 12.42.01.444000 PM
        )
[2] => Array
        (
            [id] => 3325
            [name] => paris
            [creationDate] => 31-MAR-14 06.43.28.291000 PM
        )
[3] => Array
        (
            [id] => 3272
            [name] => Testme
            [creationDate] => 03-MAR-14 11.24.58.671000 AM
        )
[4] => Array
        (
            [id] => 3324
            [name] => Testme2
            [creationDate] => 31-MAR-14 04.18.29.618000 PM

        )
)

use usort

Iłya Bursov
– Iłya Bursov

2014-05-30 06:22:33 +00:00
Commented May 30, 2014 at 6:22 — Iłya Bursov
– Iłya Bursov, Commented May 30, 2014 at 6:22
Does the data come from a database?

Sverri M. Olsen
– Sverri M. Olsen

2014-05-30 06:23:01 +00:00
Commented May 30, 2014 at 6:23 — Sverri M. Olsen
– Sverri M. Olsen, Commented May 30, 2014 at 6:23
I suggest you to change the title as it is misleading

krishna
– krishna

2014-05-30 06:24:36 +00:00
Commented May 30, 2014 at 6:24 — krishna
– krishna, Commented May 30, 2014 at 6:24

user3663507 · Accepted Answer · 2014-05-30 06:22:55Z

1

$price = array();
foreach ($groupdata as $key => $row)
{
    $price[$key] = $row['name'];
}
array_multisort($price, SORT_DESC, $groupdata);

3 Comments

Hieu Vo Over a year ago

your solution is correct, but a little bit overkill

mmt Over a year ago

Thanks a lott !! I had used SORT_ASC as i wanted them in ascending order :) This worked out as expected and desired ;)

mmt Over a year ago

array_multisort sorts data on the basis of case sensitive alphabets. An example on the application of this function ouputs following : 1. 1750test 2. 1st Group 3. AL 4. ActiveTeach-2 5. Created today 30_5 6. Not a empty group 7. Not a empty group 8. Qwerty 9. Test210 10. my ebook Notic the 10th entry i.e my ebook at the last which was not as required. So I have used usort function as suggested below by Kevin !

user1978142 · Accepted Answer · 2014-05-30 06:35:33Z

Alternatively, you could use usort() in conjunction to strtolower(). Consider this example:

$groupdata = array(array('id' => 3324,'name' => 'Testme2','creationDate' => '31-MAR-14 04.18.29.618000 PM'),array('id' => 3325,'name' => 'paris','creationDate' => '31-MAR-14 04.18.29.618000 PM'),array('id' => 3236,'name' => 'GL_HF','creationDate' => '31-MAR-14 04.18.29.618000 PM'),array('id' => 3251,'name' => 'attempting','creationDate' => '31-MAR-14 04.18.29.618000 PM'),array('id' => 3272,'name' => 'Testme','creationDate' => '31-MAR-14 04.18.29.618000 PM'),);

function sorter($a, $b) {
    if ($a['name'] == $b['name']){
        return 0;
    }
    return strtolower($a['name']) < strtolower($b['name']) ? -1 : 1;
}

usort($groupdata, 'sorter');

Sample Output

Hieu Vo · Accepted Answer · 2014-05-30 06:27:20Z

0

Use usort, so you can define your own way to compare elements:

function cmp($a, $b) {
    if ($a['name'] == $b['name']) {
        return 0;
    }
    return ($a['name'] < $b['name']) ? -1 : 1;
}


usort($your_array, "cmp");

answered May 30, 2014 at 6:27

Hieu Vo

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