Description:
------------
The order of elements in the array sorted by natsort() is not as expected by the function's name and description.

Test script:
---------------
<?php

$a = array('13.59', '14.6', '14.19');
natsort($a);
var_dump($a);


$b = array('img0120.jpg','img0.png', 'img0012.png', 'img10.png', 'img2.png', 'img1.png', 'img3.png');
natsort($b);
var_dump($b);

Expected result:
----------------
array(3) {
  [0]=>
  string(5) "13.59"
  [1]=>
  string(5) "14.19"
  [2]=>
  string(4) "14.6"
}

array(7) {
  [0]=>
  string(8) "img0.png"
  [1]=>
  string(8) "img1.png"
  [2]=>
  string(8) "img2.png"
  [3]=>
  string(8) "img3.png"
  [4]=>
  string(9) "img10.png"
  [5]=>
  string(11) "img0012.png"
  [6]=>
  string(11) "img0120.jpg"
}

Actual result:
--------------
array(3) {
  [0]=>
  string(5) "13.59"
  [1]=>
  string(4) "14.6"
  [2]=>
  string(5) "14.19"
}

array(7) {
  [1]=>
  string(8) "img0.png"
  [2]=>
  string(11) "img0012.png"
  [0]=>
  string(11) "img0120.jpg"
  [5]=>
  string(8) "img1.png"
  [4]=>
  string(8) "img2.png"
  [6]=>
  string(8) "img3.png"
  [3]=>
  string(9) "img10.png"
}