PHP sort() 函数

按字母升序对 $cars 数组的元素进行排序：

<?php
$cars = array("Volvo", "BMW", "Toyota");
sort($cars);
?>

定义和用法

sort() 函数按升序对索引数组进行排序。

提示：使用排序()函数按降序对索引数组进行排序。

sort( array, sorttype)

Parameter	Description
array	Required. Specifies the array to sort
sorttype	Optional. Specifies how to compare the array elements/items. Possible values: 0 = SORT_REGULAR - Default. Compare items normally (don't change types) 1 = SORT_NUMERIC - Compare items numerically 2 = SORT_STRING - Compare items as strings 3 = SORT_LOCALE_STRING - Compare items as strings, based on current locale 4 = SORT_NATURAL - Compare items as strings using natural ordering 5 = SORT_FLAG_CASE - Can be combined with SORT_STRING or SORT_NATURAL to sort strings case-insensitively

Parameter

Description

array

Required. Specifies the array to sort

sorttype

Optional. Specifies how to compare the array elements/items. Possible values:

0 = SORT_REGULAR - Default. Compare items normally (don't change types)
1 = SORT_NUMERIC - Compare items numerically
2 = SORT_STRING - Compare items as strings
3 = SORT_LOCALE_STRING - Compare items as strings, based on current locale
4 = SORT_NATURAL - Compare items as strings using natural ordering
5 = SORT_FLAG_CASE - Can be combined with SORT_STRING or SORT_NATURAL to sort strings case-insensitively