PHP sort array using another array no keys

Question

Hello i have an array in php

Array
(
    [0] => red
    [1] => blue
    [2] => green
    [3] => yellow
    [4] => purple
    [5] => white
)

and i want to sort it using that array

Array
(
    [0] => 
    [1] => 0
    [2] => -1
    [3] => -5
    [4] => -5
    [5] => 9
)

so i want the element with the greatest value on the second array to come first on the first array not its value from the second array but the element it self from the first array to move in the first position on the first array! The second bigger to the second place etc.. elements with the same value don't care me how they will be arranged!

the output i want to get is

Array
    (
        [0] => white
        [1] => blue
        [2] => green
        [3] => yellow
        [4] => purple
        [5] => red
    )

Oh sh#t. Can you provide example-array of what are you expecting? :D — Vitalii Zurian, Aug 02 '12 at 14:48
maybe there's a better way to do this with a 2-dimensional array... — Don, Aug 02 '12 at 14:48
Have you tried anything? Take a look at [`usort`](http://php.net/manual/en/function.usort.php). — Jon, Aug 02 '12 at 14:48
you can sort the second array and then use its keys in a foreach loop to sort the first array — Oussama Jilal, Aug 02 '12 at 14:48
and I was suggesting array_reverse, but you put that in your answer SORT_DESC LOL — Waygood, Aug 02 '12 at 14:53

score 2 · Accepted Answer · answered Aug 02 '12 at 14:49

2

You can use array_multisort() :

$ar1 = array(/* your SO links */);
$ar2 = array(/* your numbers */);
array_multisort($ar2, SORT_DESC, $ar1);

Documentation here

answered Aug 02 '12 at 14:49

zessx

68,042
28
135
158

that was really good thanks a lot dude! Had no idea about multisort! – Mpampinos Holmens Aug 02 '12 at 16:24

score 1 · Answer 2 · answered Aug 02 '12 at 14:51

1

Use array_multisort.

see http://www.php.net/manual/fr/function.array-multisort.php, follow the "Exemple #1 Trier plusieurs tableaux"

Cordially

answered Aug 02 '12 at 14:51

MUY Belgium

2,330
4
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i had no idea there was an array multisort thing so trying it and coming back guys thanks a lot – Mpampinos Holmens Aug 02 '12 at 14:53

score 0 · Answer 3 · answered Aug 02 '12 at 14:53

0

Lets call your arrays are $dataArray, and $sortArray respectively

asort($sortArray);
foreach ( $sortArray as $key=>$val ) {
    $newArray[] = $dataArray[$key];
}

If you need it reversed, just add in a call to array_reverse() at the end.

answered Aug 02 '12 at 14:53

David Gillen

1,172
5
14

score 0 · Answer 4 · answered Aug 02 '12 at 14:54

I think what the OP wants is to sort the first array by the second array's values.

IE- the second array is the vote count for the first array's web pages.

This could be solved more simply if in the first array you have each element as an array with two elements in it, webpage & vote count

$pages  = Array
(
    array(
        'page'  => 'http://stackoverflow.com/questions/640805/open-source-ios-components-reusable-views-controllers-buttons-table-cells-e',
        'count' => 0
        )
    array(
        'page'  => 'http://stackoverflow.com/questions/3889634/fast-and-lean-pdf-viewer-for-iphone-ipad-ios-tips-and-hints',
        'count' => -1
    )
    // etc for the rest...
)

But since the question asked how to do it in the current data structure:

$sorted_values  = asort($pages);

$new_pages  = array();

$sorted_keys    = array_keys($sorted_values);

foreach($sorted_keys as $page_key)
    array_push($new_pages, $pages[$page_key]);

no its not the votes man it's a sentiment analysis tool for stackoverflow i'm making and that is total ranking — Mpampinos Holmens, Aug 02 '12 at 15:02

PHP sort array using another array no keys

4 Answers4