外觀模式

什麼叫外觀模式？

爲了系統中一組接口提供一個一致的界面，此模式定義了一個高層接口，這個接口使得這一子系統更加容易使用

 

買股票

<?php class Stock1 { function buy() { return "股票1買入"; } function sell() { return "股票1賣出"; } } class Stock2 { function buy() { return "股票2買入"; } function sell() { return "股票2賣出"; } } class Stock3 { function buy() { return "股票3買入"; } function sell() { return "股票3賣出"; } } class Facade { public $stock1; public $stock2; public $stock3; function __construct() { $this->stock1 = new Stock1(); $this->stock2 = new Stock2(); $this->stock3 = new Stock3(); } function buyFund() { echo $this->stock1->buy(); echo "/n"; echo $this->stock2->buy(); echo "/n"; echo $this->stock3->buy(); echo "/n"; } function sellFund() { echo $this->stock1->sell(); echo "/n"; echo $this->stock2->sell(); echo "/n"; echo $this->stock3->sell(); echo "/n"; } } $facade = new Facade(); $facade->buyFund(); $facade->sellFund(); 

結果

股票1買入

股票2買入

股票3買入

股票1賣出

股票2賣出

股票3賣出