(PHP 5 >= 5.2.0, PHP 7, PHP 8)
ArrayObject::natcasesort — Sort an array using a case insensitive "natural order" algorithm
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".
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::natcasesort() example
<?php
$array = array('IMG0.png', 'img12.png', 'img10.png', 'img2.png', 'img1.png', 'IMG3.png');
$arr1 = new ArrayObject($array);
$arr2 = clone $arr1;
$arr1->asort();
echo "Standard sorting\n";
var_dump($arr1);
$arr2->natcasesort();
echo "\nNatural order sorting (case-insensitive)\n";
var_dump($arr2);
?>以上示例会输出：
Standard sorting
object(ArrayObject)#1 (1) {
["storage":"ArrayObject":private]=>
array(6) {
[0]=>
string(8) "IMG0.png"
[5]=>
string(8) "IMG3.png"
[4]=>
string(8) "img1.png"
[2]=>
string(9) "img10.png"
[1]=>
string(9) "img12.png"
[3]=>
string(8) "img2.png"
}
}
Natural order sorting (case-insensitive)
object(ArrayObject)#2 (1) {
["storage":"ArrayObject":private]=>
array(6) {
[0]=>
string(8) "IMG0.png"
[4]=>
string(8) "img1.png"
[3]=>
string(8) "img2.png"
[5]=>
string(8) "IMG3.png"
[2]=>
string(9) "img10.png"
[1]=>
string(9) "img12.png"
}
}
For more information see: Martin Pool's » Natural Order String Comparison page.