natcasesort
(PHP 4 , PHP 5)
natcasesort --
Sort an array using a case insensitive "natural order" algorithm
Description
void
natcasesort ( 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".
natcasesort() is a case insensitive version of
natsort().
Example 1. natcasesort() example
<?php
$array1 = $array2 = array('IMG0.png', 'img12.png', 'img10.png', 'img2.png', 'img1.png', 'IMG3.png');
sort($array1);
echo "Standard sorting\n";
print_r($array1);
natcasesort($array2);
echo "\nNatural order sorting (case-insensitive)\n";
print_r($array2);
?>
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The code above will generate the following output:
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
) |
For more information see: Martin Pool's Natural Order String Comparison
page.
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See also sort(),
natsort(),
strnatcmp(), and
strnatcasecmp().