Order multidimensional array recursively at each level in PHP

Question

I have an array of this form:

Array
(
    [first_level] => Array
        (
            [dir_3] => Array
                (
                    [subdir_1         


        

Answer 1

Use a recursive function:

// Note this method returns a boolean and not the array
function recur_ksort(&$array) {
   foreach ($array as &$value) {
      if (is_array($value)) recur_ksort($value);
   }
   return ksort($array);
}