Php/docs/arrayobject.natcasesort

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• ArrayObject
• Sort an array using a case insensitive "natural order" algorithm

ArrayObject::natcasesort

(PHP 5 >= 5.2.0, PHP 7)

ArrayObject::natcasesort — Sort an array using a case insensitive "natural order" algorithm

Description

public ArrayObject::natcasesort ( ) : void

This method is a case insensitive version of ArrayObject::natsort.

This method 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

This function has no parameters.

Return Values

No value is returned.

Examples

Example #1 ArrayObject::natcasesort() example

<?php$array = array('IMG0.png', 'img12.png', 'img10.png', 'img2.png', 'img1.png', 'IMG3.png');$arr1 = new ArrayObject($array);$arr2 = clone $arr1;$arr1->asort();echo "Standard sorting\n";print_r($arr1);$arr2->natcasesort();echo "\nNatural order sorting (case-insensitive)\n";print_r($arr2);?>

The above example will output:

Standard sorting
ArrayObject Object
(
    [0] => IMG0.png
    [5] => IMG3.png
    [4] => img1.png
    [2] => img10.png
    [1] => img12.png
    [3] => img2.png
)

Natural order sorting (case-insensitive)
ArrayObject Object
(
    [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

• ArrayObject::asort() - Sort the entries by value
• ArrayObject::ksort() - Sort the entries by key
• ArrayObject::natsort() - Sort entries using a "natural order" algorithm
• ArrayObject::uasort() - Sort the entries with a user-defined comparison function and maintain key association
• ArrayObject::uksort() - Sort the entries by keys using a user-defined comparison function