命令模式 - 设计模式 - PHP版

Posted 2020-10-12

 1 <?php
 2 /*
 3  * 命令模式
 4  * 
 5  */
 6 //声明执行操作的接口(Command接口)
 7 interface Cook {
 8     public function excute();
 9 }
10 //做米饭（ConcreteCommand）
11 class CookRice implements Cook {
12     private $cooker;
13     function __construct(Cooker $cooker) {
14         $this->cooker = $cooker;
15     }
16     public function excute() {
17         $this->cooker->doRice();
18     }
19 }
20 //做菜（ConcreteCommand）
21 class CookFood implements Cook {
22     private $cooker;
23     function __construct(Cooker $cooker) {
24         $this->cooker = $cooker;
25     }
26     public function excute() {
27         $this->cooker->doFood();
28     }
29 }
30 //服务员(Invoker)(通过List方式，可以进一步优化，这里略)
31 class ServerPerson {
32     private $cook;
33     public function setCook(Cook $cook) {
34         $this->cook = $cook;
35     }
36     public function ExecuteCommand() {
37         $this->cook->excute();
38     }
39 }
40 //厨师（Receiver）
41 class Cooker {
42     public function doRice() {
43         echo ‘做饭‘;
44     }
45     public function doFood() {
46         echo ‘做菜‘;
47     }
48 }
49 //客户端
50 class Client {
51     public static function main() {
52         $cooker = new Cooker();
53         $server = new ServerPerson();
54         //做饭
55         $cookA = new CookRice($cooker);
56         $server->setCook($cookA);
57         $server->ExecuteCommand();
58         //做菜
59         $cookB = new CookFood($cooker);
60         $server->setCook($cookB);
61         $server->ExecuteCommand();
62     }
63 }
64 Client::main();