php man page for natcasesort

NATCASESORT(3)								 1							    NATCASESORT(3)

natcasesort - Sort an array using a case insensitive ";natural order" algorithm

SYNOPSIS
       bool natcasesort (array	&$array)

DESCRIPTION
       natcasesort(3) is a case insensitive version of natsort(3).

	This  function	implements  a  sort  algorithm that orders alphanumeric strings in the way a human being would while maintaining key/value
       associations. This is described as a "natural ordering".

PARAMETERS
	      o $array
		- The input array.

RETURN VALUES
	Returns TRUE on success or FALSE on failure.

EXAMPLES
       Example #1

	      natcasesort(3) example

	      <?php
	      $array1 = $array2 = array('IMG0.png', 'img12.png', 'img10.png', 'img2.png', 'img1.png', 'IMG3.png');

	      sort($array1);
	      echo "Standard sorting
";
	      print_r($array1);

	      natcasesort($array2);
	      echo "
Natural order sorting (case-insensitive)
";
	      print_r($array2);
	      ?>

	      The above example will output:

	      Standard sorting
	      Array
	      (
		  [0] => IMG0.png
		  [1] => IMG3.png
		  [2] => img1.png
		  [3] => img10.png
		  [4] => img12.png
		  [5] => img2.png
	      )

	      Natural order sorting (case-insensitive)
	      Array
	      (
		  [0] => IMG0.png
		  [4] => img1.png
		  [3] => img2.png
		  [5] => IMG3.png
		  [2] => img10.png
		  [1] => img12.png
	      )

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

SEE ALSO
       natsort(3), The comparison of array sorting functions, strnatcmp(3), strnatcasecmp(3).

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