Sorting an array based on its value

Question

I have an Array, Sample:

$array {
 [0] {
   [something]=1;
   [something2]=2;
     } 
 [1] {
   [something]=2;
   [something2]=4;
     }
 [2] {
   [something]=5;
   [something2]=2;
     }
}

I want to order the array based on the key something;

So it will look like:

$array {
 [0] {
   [something]=5;
   [something2]=2;
     } 
 [1] {
   [something]=2;
   [something2]=4;
     }
 [2] {
   [something]=1;
   [something2]=2;
     }
}

What sorting is this? Isn't the array just [reversed](http://www.php.net/manual/en/function.array-reverse.php)? — Linus Kleen, Jan 17 '11 at 18:33
well in the example it has been reversed but the array is ordered based on the value of the key something, if you have a look... — Max2Min, Jan 17 '11 at 18:36

score 5 · Accepted Answer · edited Jan 17 '11 at 18:39

5

function compare($x, $y) {
    return $x['something'] - $y['something'];
}

usort($input_array, 'compare');

you need to use a usort() similar to the above.

edited Jan 17 '11 at 18:39

Linus Kleen

33,871
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answered Jan 17 '11 at 18:37

dqhendricks

19,030
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+1 cause I didn't know this. I just wrote an algorithm to sort it manually! – Aaron Hathaway Jan 17 '11 at 18:41
Thanks works great and saved alot of time, i was thinking of doing it the complicated way – Max2Min Jan 17 '11 at 18:54

Matt Lowden · Answer 2 · 2011-01-17T18:51:39.757

0

Would the following suffice?

foreach($array as $key => $value){
    ksort( $array[$key] );
}

edited Jan 17 '11 at 18:51

answered Jan 17 '11 at 18:41

Matt Lowden

2,586
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Ah, sorry - I thought that's what you wanted to do; sort by the key 'something'. – Matt Lowden Jan 17 '11 at 18:52
np, but thanks for trying, The solution is posted by dqhendricks – Max2Min Jan 17 '11 at 20:48

Sorting an array based on its value

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