natsort
(PHP 4 , PHP 5)
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 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:
Пример 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. |
Смотрите также natcasesort(), strnatcmp(), and strnatcasecmp().