The natcasesort Function

The natcasesort function sorts an array as a human would. This function preserves the associations between keys and values.

Unlike natsort, it ignores character case.

Syntax

sort(array &$array, int $flags = SORT_REGULAR): bool

Let's first perform sorting using the natsort function with case sensitivity:

<?php
	$arr = [
		'Img12.png',
		'Img10.png',
		'img2.png',
		'Img1.png'
	];
	
	natsort($arr);
	var_dump($arr);
?>

Code execution result:

[
	'Img10.png',
	'img1.png',
	'img2.png',
	'img12.png',
]

Now let's perform natural sorting using the natcasesort function:

<?php
	$arr = [
		'img12.png',
		'Img10.png',
		'img2.png',
		'img1.png'
	];
	
	natcasesort($arr);
	var_dump($arr);
?>

Code execution result:

[
	'img1.png',
	'img2.png',
	'Img10.png',
	'img12.png',
]