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# PHP Function natcasesort()

## Syntax

natcasesort ( $array );

## Definition and Usage

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".

## Paramters

Parameter | Description
--- | ---
array | Required. Specifies an array

## Return Value

This function returns TRUE on success, or FALSE on failure.

## Example

Try out following example:

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

    sort($array1);
    echo "Standard sorting <br />";
    print_r($array1);

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

This will produce following result:

    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
    )

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