Php/docs/arrayobject.ksort

• PHP Manual
• ArrayObject
• Sort the entries by key

ArrayObject::ksort

(PHP 5 >= 5.2.0, PHP 7)

ArrayObject::ksort — Sort the entries by key

说明

public ArrayObject::ksort ( ) : void

Sorts the entries by key, maintaining key to entry correlations. This is useful mainly for associative arrays.

参数

此函数没有参数。

返回值

没有返回值。

范例

Example #1 ArrayObject::ksort() example

<?php$fruits = array("d" => "lemon", "a" => "orange", "b" => "banana", "c" => "apple");$fruitArrayObject = new ArrayObject($fruits);$fruitArrayObject->ksort();foreach ($fruitArrayObject as $key => $val) {    echo "$key = $val\n";} ?>

以上例程会输出：

a = orange
b = banana
c = apple
d = lemon

参见

• ArrayObject::asort() - Sort the entries by value
• ArrayObject::natsort() - Sort entries using a "natural order" algorithm
• ArrayObject::natcasesort() - Sort an array using a case insensitive "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