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


ArrayObject::natcasesort

(PHP 5 >= 5.2.0)

ArrayObject::natcasesortSort an array using a case insensitive "natural order" algorithm

Description

public void 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.

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