外观模式
原文链接:http://www.orlion.ga/744/
解释:
通过在必须的逻辑和方法的集合前创建简单的外观接口,外观设计模式隐藏了来自调用对象的复杂性。
代码:
/** * 外观模式 * */ class SwitchFacade { private $_light = null; //电灯 private $_ac = null; //空调 private $_fan = null; //电扇 private $_tv = null; //电视 public function __construct() { $this->_light = new Light(); $this->_fan = new Fan(); $this->_ac = new AirConditioner(); $this->_tv = new Television(); } /** * 晚上开电灯 * */ public function method1($isOpen =1) { if ($isOpen == 1) { $this->_light->on(); $this->_fan->on(); $this->_ac->on(); $this->_tv->on(); }else{ $this->_light->off(); $this->_fan->off(); $this->_ac->off(); $this->_tv->off(); } } /** * 白天不需要电灯 * */ public function method2() { if ($isOpen == 1) { $this->_fan->on(); $this->_ac->on(); $this->_tv->on(); }else{ $this->_fan->off(); $this->_ac->off(); $this->_tv->off(); } } } /******************************************子系统类 ************/ /** * */ class Light { private $_isOpen = 0; public function on() { echo 'Light is open', '<br/>'; $this->_isOpen = 1; } public function off() { echo 'Light is off', '<br/>'; $this->_isOpen = 0; } } class Fan { private $_isOpen = 0; public function on() { echo 'Fan is open', '<br/>'; $this->_isOpen = 1; } public function off() { echo 'Fan is off', '<br/>'; $this->_isOpen = 0; } } class AirConditioner { private $_isOpen = 0; public function on() { echo 'AirConditioner is open', '<br/>'; $this->_isOpen = 1; } public function off() { echo 'AirConditioner is off', '<br/>'; $this->_isOpen = 0; } } class Television { private $_isOpen = 0; public function on() { echo 'Television is open', '<br/>'; $this->_isOpen = 1; } public function off() { echo 'Television is off', '<br/>'; $this->_isOpen = 0; } } /** * 客户类 * */ class client { static function open() { $f = new SwitchFacade(); $f->method1(1); } static function close() { $f = new SwitchFacade(); $f->method1(0); } } client::open();
代码来自:http://blog.csdn.net/hguisu/article/details/7533759,《PHP设计模式》这本书上给出的例子跟建造者模式太像了,而上边的例子很合适,而且原文讲的也很好。