Sort entries using a "natural order" algorithm

ArrayObject::natsort

(PHP 5 >= 5.2.0, PHP 7, PHP 8)

ArrayObject::natsortSort entries using a "natural order" algorithm

說明

public ArrayObject::natsort(): bool

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". An example of the difference between this algorithm and the regular computer string sorting algorithms (used in ArrayObject::asort) method can be seen in the example below.

注意:

如果兩個成員完全相同,那麼它們將保持原來的順序。 在 PHP 8.0.0 之前,它們在排序陣列中的相對順序是未定義的。

參數

此函式沒有參數。

返回值

沒有返回值。

範例

示例 #1 ArrayObject::natsort() example

<?php
$array 
= array("img12.png""img10.png""img2.png""img1.png");

$arr1 = new ArrayObject($array);
$arr2 = clone $arr1;

$arr1->asort();
echo 
"Standard sorting\n";
print_r($arr1);

$arr2->natsort();
echo 
"\nNatural order sorting\n";
print_r($arr2);
?>

以上例程會輸出:

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

Natural order sorting
ArrayObject Object
(
    [3] => img1.png
    [2] => img2.png
    [1] => img10.png
    [0] => img12.png
)

For more information see: Martin Pool's » Natural Order String Comparison page.

參見

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