ArrayObject::natsort

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

    ArrayObject::natsort — Sort entries using a "natural order" algorithm

    说明

    publicArrayObject::natsort(): true

    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:

    如果两个成员完全相同，那么它们将保持原来的顺序。 在 PHP 8.0.0 之前，它们在排序数组中的相对顺序是未定义的。

    参数

    此函数没有参数。

    返回值

    没有返回值。

    更新日志

    版本说明
    8.2.0 现在返回类型为 true；之前是 bool。

    示例

    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);
    ?>

    以上示例会输出：

    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.

    参见

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