ArrayObject::ksort
(PHP 5 >= 5.2.0, PHP 7)
ArrayObject::ksort — Sort the entries by key
说明
public ArrayObject::ksort
( void
) : 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