CODEWITHSUNDEEP
phparrayssortingcustom-sort
Lior
Lior

Reputation: 5674

Sort a flat associative array by a priority array

So I have an array such as this one:

Array
(
    [-1] => Array
        (
            [3] => 3
            [1] => 1
            [6] => 6
            [7] => 7
            [5] => 5
        )
)

It also contains some other keys that should not be modified.

I'd like to the numbers which are in a second array to come first (in the order of that second array), and then will be the numbers that don't exist in the second array, if any.

So for that matter, the second array would be:

Array
(
    [0] => 6
    [1] => 5
    [2] => 3
)

And the final array should be as follows (please remember, there are some more keys inside of that array that should stay as they are):

Array
(
    [-1] => Array
        (
            [6] => 6
            [5] => 5
            [3] => 3
            [1] => 1
            [7] => 7
        )
)

Any ideas how that can be done?

Thanks!

Upvotes: 1

Views: 136

Answers (2)

codefreak
codefreak

Reputation: 7131

It's not and shouldn't be termed as sorting but may be this code snippet may help you do what you want to: 

         $a1 = Array ( [-1] => Array ( [3] => 3 [1] => 1 [6] => 6 [7] => 7 [5] => 5 ) );
            $a2 = Array ( [0] => 6 [1] => 5 [2] => 3 );
            $sorted = getSortedArray($a1[-1] , $array2);
                function getSortedArray($array1 , $array2){
                 $temp = Array();
                 $count = 0;
                 $totalKeys = sizeof($array2);
                 for($i=0;$i<sizeof($array2);$i++){


 $temp[i] = $array1[$array2[i]];      
unset($array1[$array2[i]]);
    }
                 while($count!=sizeof($array1))
                          $temp[$totalKeys++] = $array1[$count++];                      
        return $temp;   



        }

Upvotes: 1

Mr. Llama
Mr. Llama

Reputation: 20899

I believe the function you're looking for is called array_multisort().

array_multisort() can be used to sort several arrays at once, or a multi-dimensional array by one or more dimensions.

Upvotes: 0

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