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:
Example 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.
|
See also natcasesort(),
strnatcmp(), and
strnatcasecmp().
