Question

I need a PHP script which would sort an array of numbers by first digit, then by second digit, and so on.

For example, an array:

$arr = array(1, 94, 4, 925, 401, 277, 255);

should result in a sort like this:

1,
255,
277,
4,
401,
925,
94

Answer 1

Sort it as strings, by passing SORT_STRING to the sort() function:

sort( $arr, SORT_STRING);

This outputs:

Array
(
    [0] => 1
    [1] => 255
    [2] => 277
    [3] => 4
    [4] => 401
    [5] => 925
    [6] => 94
)