(PHP 5 >= 5.2.0, PHP 7)
ArrayObject::ksort — Sort the entries by key
Sorts the entries by key, maintaining key to entry correlations. This is useful mainly for associative arrays.
此函数没有参数。
没有返回值。
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