Naturally sorting a PHP array in reverse order and not saving keys

Question

I look naturally to sort the array in reverse order and not save the keys. For example, I need this array:

[0] => 1-string
[1] => 2-string
[2] => 10-string
[3] => 4-srting
[4] => 3-srting

To make it this way:

[0] => 10-srting
[1] => 4-string
[2] => 3-string
[3] => 2-string
[4] => 1-string

I have it close to usort ($ array, 'strnatcmp'); but it is not in reverse order. array_reverse () after does not help.

Any ideas?

Answer 1

I am a little puzzled by "array_reverse () after it doesn't help." because

<?php
echo PHP_VERSION, "\n";

$x = array( 
    '1-string',
    '2-string',
    '10-string',
    '4-srting',
    '3-srting'
);

natsort($x);
$x = array_reverse($x, false);
print_r($x);

prints

5.3.8
Array
(
    [0] => 10-string
    [1] => 4-srting
    [2] => 3-srting
    [3] => 2-string
    [4] => 1-string
)

on my car

Answer 2

Use the attribute $preserveKeys array_reverse()to reset the keys, and also change the direction of the array after natcasesort().

function rnatcasesort(&$array) {
    natcasesort($array);
    $array = array_reverse($array, false);
}

$values = array('1-string', '2-string', '10-string', '4-string', '3-string');

rnatcasesort($values);

var_dump($values);

/*
array(5) {
  [0]=>
  string(9) "10-string"
  [1]=>
  string(8) "4-string"
  [2]=>
  string(8) "3-string"
  [3]=>
  string(8) "2-string"
  [4]=>
  string(8) "1-string"
}
*/

---

Answer 3

rsort() SORT_NATURAL.

rsort($array, SORT_NATURAL);

SORT_NATURAL PHP 5.4. , array_reverse (natsort()).

Answer 4

rsort($array) ?

Answer 5

<?php
$arr  = array("1-string", "2-string", "10-string","4-srting", "3-srting");

function sort_reverse($a, $b){
  $a = (int)$a;
  $b = (int)$b;
  if ($a > $b){
    return -1;
  }
  if ($a < $b){
    return 1;
  }
   return 0;
}
usort($arr, "sort_reverse");
var_dump($arr);

here http://codepad.org/6dn81S3f

Answer 6

It works:

$array = array('1-string', '2-string', '10-string', '4-string', '3-string');
natsort($array);
$array = array_reverse($array);
print_r($array);