Sort arrays from small to large in a bubble-sorted way

Each cycle of the inner layer, the larger number will be moved back one outer layer each cycle, the largest number will be the last

$order _array=Array(5,4,3,6,7,1,2,10,8,9);functionBubble_sort ($arr){    //Get the length    $count _num=Count($arr);  for($k= 1;$k<$count _num;$k++){        //find the largest set of data with less length to float to the last         for($i= 0;$i<$count _num-$k;$i++){            if($arr[$i]>$arr[$i+1]) {//adjacent comparison                $tem=$arr[$i]; $arr[$i]=$arr[$i+1]; $arr[$i+1]=$tem; }        }    }    return $arr;}$new _order_arr=bubble_sort ($order _array);

Sort arrays from small to large in a bubble-sorted way