<?php
//责任链设计模式
/**
* 每个对象，储存着对自己上级的引用，
* 如果自己处理不了，交给上一级。
*/
class board{
protected $power=1;
protected $top='admin'; public function process($lev){
if($lev<=$this->power){
echo "版主删帖";
}else{
$top=new $this->top;
$top->process($lev);
}
}
}
class admin{
protected $power=2;
protected $top='police'; public function process($lev){
if($lev<=$this->power){
echo "管理员封号";
}else{
$top=new $this->top;
$top->process($lev);
}
}
}
class police{
protected $power=3;
protected $top=null; public function process($lev){
echo '抓起来';
}
}
// 责任链模式来处理举报问题
$lev=$_POST['jubao']+0; $judge=new board();
$judge->process($lev);
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>责任链模式处理举报问题</title>
</head>
<body>
<form action="2.php" method="post">
<select name="jubao">
<option value="1">粗口</option>
<option value="2">黄赌毒</option>
<option value="3">分裂国家</option>
</select>
<button type="submit">举报</button>
</form>
</body>
</html>