ArrayObject::natsort

(PHP 5 >= 5.2.0, PHP 7)

ArrayObject::natsortSort entries using a "natural order" algorithm


Description

public ArrayObject::natsort ( ) : void

This method 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 ArrayObject::asort) method can be seen in the example below.


Parameters

This function has no parameters.


Return Values

No value is returned.


Examples

Example #1 ArrayObject::natsort() example

<?php$array = array("img12.png", "img10.png", "img2.png", "img1.png");$arr1 = new ArrayObject($array);$arr2 = clone $arr1;$arr1->asort();echo "Standard sorting\n";print_r($arr1);$arr2->natsort();echo "\nNatural order sorting\n";print_r($arr2);?>

The above example will output:


Standard sorting
ArrayObject Object
(
    [3] => img1.png
    [1] => img10.png
    [0] => img12.png
    [2] => img2.png
)

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

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


See Also