Sort nested array alphabetically by value

Asked May 21 '15 at 14:11

Active May 21 '15 at 14:25

Viewed 40 times

How can I sort alphabetically this multidimensional-array, by the value of the "code" key?

Array
(
[0] => Array
    (
        [Products] => Array
            (
                [code] => LD
                [power] => 5
                [channels] => 2
            )
    )
[1] => Array
    (
        [Products] => Array
            (
                [code] => CAE
                [power] => 15
                [channels] => 1
            )
    )
[2] => Array
    (
        [Products] => Array
            (
                [code] => FC
                [power] => 12
                [channels] => 1
            )
    )

I have checked other post, but no one has an array like this.

EDIT: this is my attempt

function sortByCode($a, $b) {
    return strcmp($a['code'], $b['code']);
}

and then:

usort($myarray['Products'], 'sortByCode');

I know it's wrong, but I don't know how make it work!

edited May 21 '15 at 14:25

asked May 21 '15 at 14:11

Andrea

Have you tried anything? Like usort() maybe? – Ulver May 21 '15 at 14:12
Yes, I've already used usort() as explained in this post http://stackoverflow.com/questions/2699086/sort-multi-dimensional-array-by-value ...without success – Andrea May 21 '15 at 14:18
@Andrea Then add your attempt and show us where you are stuck – Rizier123 May 21 '15 at 14:20
@Andrea You were close. You forgot the dimension: `Products`, just use it like this: `usort($arr, function($a, $b){ return strcasecmp($b["Products"]["code"], $a["Products"]["code"]); });` – Rizier123 May 21 '15 at 14:31
@Rizier123 ty for your help, but doesn't work..'usort() [function.usort]: Invalid comparison function' – Andrea May 21 '15 at 15:21
@Andrea Then you don't show us your real code/array – Rizier123 May 21 '15 at 15:23
@Andrea See it working: http://3v4l.org/eHmeK – Rizier123 May 21 '15 at 15:28
@Rizier123 It may depend on the my version 5.2.6 of php? – Andrea May 21 '15 at 15:37
@Andrea Ah yeah, then it's just a version problem: http://3v4l.org/ailmf – Rizier123 May 21 '15 at 15:40
@Rizier123 I've solved with: usort($arr, array($this, "mySort")); even if I don't know why! xD very thanks :)) – Andrea May 21 '15 at 15:47
@Andrea Nice that you have solved it. ^ I see your code is in a class. – Rizier123 May 21 '15 at 15:48

Sort nested array alphabetically by value

0 Answers0