PHP ksort() 函数
PHP ksort() 函数
PHP Array 函数
定义和用法
ksort() 函数按照键名对数组排序,为数组值保留原来的键。
可选的第二个参数包含附加的排序标志。
若成功,则返回 TRUE,否则返回 FALSE。
语法ksort(array,sorttype)
array | 必需。规定要排序的数组。 |
sorttype | 可选。规定如何排列数组的值。可能的值: SORT_REGULAR - 默认。以它们原来的类型进行处理(不改变类型)。 SORT_NUMERIC - 把值作为数字来处理 SORT_STRING - 把值作为字符串来处理 SORT_LOCALE_STRING - 把值作为字符串来处理,基于本地设置*。 |
*:该值是 PHP 4.4.0 和 5.0.2 新加的。在 PHP 6 之前,使用了系统的区域设置,可以用 setlocale() 来改变。自 PHP 6 起,必须用 i18n_loc_set_default() 函数。
例子
<?php$my_array = array("a" => "Dog", "b" => "Cat", "c" => "Horse");ksort($my_array);print_r($my_array);?>
输出:
Array([a] => Dog[b] => Cat[c] => Horse)

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