Question

php的_destruct打印不出要得结果

代码如下：
<?php
class myname{
var $user;
function myname($name){
$this->user=$name;
}
function say(){
echo "我的姓名是";
}
function _destruct(){
echo "do _destruct";
}
}
class student extends myname{
var $school;
function study(){
echo "study hard";
}
}
$yy=new student("兰玉");
$yy->say();
?>

输出的结果为：
我的姓名是

为什么输不出：
我的姓名是兰玉 do _destruct

Answer 1

class myname{
var $user;
function myname($name){
$this->user=$name;
}
function say(){
echo "我的姓名是".$this->user;
}
function _destruct(){
echo "do _destruct";
}
}
class student extends myname{
var $school;
function study(){
echo "study hard";
}
}
$yy=new student("兰玉");
$yy->say();

Answer 2

destruct前面是两条下划线__ 析构方面前面是__destruct

追问

兰玉的姓名打不出是怎么回事呢？