<?php
//抽象命令类
abstract class Command {
protected $_r;

public function __construct(Receiver $r)
{
$this->_r = $r;
}

abstract public function execute();
}

//接受命令者（真正的执行者）
class Receiver {
private $_name;

//这里初始化不同的接受者
function __construct($name)
{
$this->_name = $name;
}

function kaoyrc()
{
echo $this->_name . '在烤羊肉串<br />';
}

function kaojc()
{
echo $this->_name . '在烤鸡翅<br />';
}
}

class Invoker {
private $_commands = array();

function setCommand(Command $cmd)
{
$this->_commands[] = $cmd;
}

function execute()
{
foreach ($this->_commands as $cmd)
{
$cmd->execute();
}
}
}

//这个是烤羊肉串的命令
class kaoyrcCommand extends Command {
public function execute()
{
$this->_r->kaoyrc();
}
}
//这个是考鸡翅的命令
class kaojcCommand extends Command {
public function execute()
{
$this->_r->kaojc();
}
}

$zs = new Receiver('张三'); //初始化接受者张三
$ls = new Receiver('李四'); //初始化接受者李四

$waiter = new Invoker(); //创建服务员

$zskaoyrc = new kaoyrcCommand($zs); //创建让张三烤羊肉串的命令
$zskaojc = new kaojcCommand($zs); //创建让张三烤鸡翅的命令
$lskaojc = new kaojcCommand($ls); //创建让李四烤鸡翅的命令

//将命令报给服务员让他处理
$waiter->setCommand($zskaoyrc);
$waiter->setCommand($zskaojc);
$waiter->setCommand($lskaojc);

$waiter->execute(); //将命令组报给接受者（解决者）

?>

// 结果
// 张三在烤羊肉串
// 张三在烤鸡翅
// 李四在烤鸡翅