(PHP 4, PHP 5, PHP 7)
natcasesort — Sort an array using a case insensitive "natural order" algorithm
natcasesort ( array &$array ) : bool
natcasesort() is a case insensitive version of natsort().
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".
Note:
If two members compare as equal, their relative order in the sorted array is undefined.
array
The input array.
Returns true
on success or false
on failure.
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); ?>
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.
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https://www.php.net/manual/en/function.natcasesort.php