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  • ArrayObject::natsort()

    (PHP 5 >= 5.2.0, PHP 7)

    Sort entries using a "natural order" algorithm

    说明

    publicArrayObject::natsort(void): void

    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.

    参数

    此函数没有参数。

    返回值

    没有返回值。

    范例

    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

    • ArrayObject::asort() Sort the entries by value
    • ArrayObject::ksort() Sort the entries by key
    • ArrayObject::natcasesort() Sort an array using a case insensitive "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