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

You need to use ksort.

// Not tested ...    
function recursive_ksort(&$array) {
    foreach ($array as $k => &$v) {
        if (is_array($v)) {
            recursive_ksort($v);
        }
    }
    return ksort($array);
}