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(PHP 5 >= 5.2.0, PHP 7, PHP 8)
ArrayObject::natsort — Sort entries using a "natural order" algorithm
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。
此函数没有参数。
没有返回值。
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.