PHP Function natsort()

Syntax

natsort ( $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". An example of the difference between this algorithm and the regular computer string sorting algorithms (used in sort()) can be seen below:

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($array1); natsort($array2); echo "<br />Natural order sorting<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 Array ( [0] => IMG0.png [5] => IMG3.png [4] => img1.png [3] => img2.png [2] => img10.png [1] => img12.png )