ArrayObject::natcasesort()

(PHP 5 >= 5.2.0, PHP 7)

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

说明

publicArrayObject::natcasesort(void): 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".

参数

此函数没有参数。

返回值

没有返回值。

范例

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);
?>

以上例程会输出：

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.

参见

• 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