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                                    natsort

   (PHP 4 )
   natsort --  Sort an array using a "natural order" algorithm

Description

   void natsort ( array array)

   This function implements a sort algorithm that orders alphanumeric
   strings in the way a human being would. This is described as a
   "natural ordering". An example of the difference between this
   algorithm and the regular computer string sorting algorithms (used in
   sort()) can be seen below:

   Example 1. natsort() example
   <?php
   $array1 = $array2 = array("img12.png", "img10.png", "img2.png",
   "img1.png");
   sort($array1);
   echo "Standard sorting\n";
   print_r($array1);
   natsort($array2);
   echo "\nNatural order sorting\n";
   print_r($array2);
   ?>

   The code above will generate the following output:
Standard sorting
Array
(
    [0] => img1.png
    [1] => img10.png
    [2] => img12.png
    [3] => img2.png
)

Natural order sorting
Array
(
    [3] => img1.png
    [2] => img2.png
    [1] => img10.png
    [0] => img12.png
)

   For more information see: Martin Pool's Natural Order String
   Comparison page.

     Note: If you're wanting to maintain index/value associations,
     consider using uasort($arr, 'strnatcmp').

   See also natcasesort(), strnatcmp(), and strnatcasecmp().
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