PHP: Sort array numerically descending

Question

this question looks like it should have a simple answer but google and the php manual are being no help to me, maybe I just don't understand what they are telling me.

I have an array example:

$outcomes_array = array(1,4,2,3,5);

It will always contain just numbers, how do I go about sorting this array so that it is always in descending order?

so output I want:

$outcomes_array[0] = 5
$outcomes_array[1] = 4
$outcomes_array[2] = 3

and so on...

Thanks:)

Answer 1

Use rsort() .

Answer 2

rsort( $outcomes_array )

Note, it is not

$outcomes_array = rsort( $outcomes_array );

Answer 3

rsort( $outcomes_array );
print_r( $outcomes_array );

Answer 4

• rsort is just for a numeric array
• arsort is for an array with keys

Answer 5

As the default is SORT_REGULAR - compare items normally (don't change types) So the code should be:

$outcomes_array = array(1,4,2,3,5);
rsort( $outcomes_array, SORT_NUMERIC );//SORT_NUMERIC - compare items numerically
print_r( $outcomes_array );

Answer 6

$array = [2, 1, 22, 1, 3, 134, 3, 43, 23, 4];

function mi($arr){
    $count = count($arr);
    for ($j = 0; $j < $count; $j++) {
        $min = $arr[0];

        for ($i = 0; $i < count($arr); $i++) {
            if ($arr[$i] <= $min) {
                $min = $arr[$i];
            }
        }
        $ar[] = $min;

        for ($i = 0; $i < count($arr); $i++) {
            if ($arr[$i] == $min) {
                unset ($arr[$i]);
                $arr = array_values($arr);
                break;
            }
        }
    }
    return $ar;
 }
print_r(mi($array));