NATCASESORT(3) 1 NATCASESORT(3)
natcasesort - Sort an array using a case insensitive ";natural order" algorithm
SYNOPSIS
bool natcasesort (array &$array)
DESCRIPTION
natcasesort(3) is a case insensitive version of natsort(3).
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".
PARAMETERS
o $array
- The input array.
RETURN VALUES
Returns TRUE on success or FALSE on failure.
EXAMPLES
Example #1
natcasesort(3) example
<?php
$array1 = $array2 = array('IMG0.png', 'img12.png', 'img10.png', 'img2.png', 'img1.png', 'IMG3.png');
sort($array1);
echo "Standard sorting
";
print_r($array1);
natcasesort($array2);
echo "
Natural order sorting (case-insensitive)
";
print_r($array2);
?>
The above example will 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.
SEE ALSO
natsort(3), The comparison of array sorting functions, strnatcmp(3), strnatcasecmp(3).
PHP Documentation Group NATCASESORT(3)