PHP函数Ksort()通过关键字对数组进行排序的具体方式介绍

我们在学习Listing C的具体代码如下：

php 
$data = array("US" => "United States", 
"IN" => "India", "DE" => "Germany", "ES" => 
"Spain");ksort($data); print_r($data);  

?>