[Solved] Keep order in array, but change the values [closed]

Question

$data =  [3,2,8,4];
$keys = array_keys($data);
array_multisort($data, SORT_ASC, $keys);
array_walk($keys, function(&$value) { ++$value; });
var_dump($keys);

Accepted Answer

$data =  [3,2,8,4];
$keys = array_keys($data);
array_multisort($data, SORT_ASC, $keys);
array_walk($keys, function(&$value) { ++$value; });
var_dump($keys);