责任链模式

<?php
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 '管理员封账号';
        } 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
$lev = (int)$_POST['jubao'];

$judge = new board();
$judge->process($lev);