門面模式 （Facade）又稱外觀模式，用于為子系統中的一組接口提供一個一致的界面。門面模式定義了一個高層接口，這個接口使得子系統更加容易使用：引入門面角色之后，用戶只需要直接與門面角色交互，用戶與子系統之間的復雜關系由門面角色來實現，從而降低了系統的耦

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<?php class Camera {public function turnOn() {}public function turnOff() {}public function rotate($degrees) {} }class Light {public function turnOn() {}public function turnOff() {}public function changeBulb() {} }class Sensor {public function activate() {}public function deactivate() {}public function trigger() {} }class Alarm {public function activate() {}public function deactivate() {}public function ring() {}public function stopRing() {} }class SecurityFacade {private $_camera1, $_camera2;private $_light1, $_light2, $_light3;private $_sensor;private $_alarm;public function __construct() {$this->_camera1 = new Camera();$this->_camera2 = new Camera();$this->_light1 = new Light();$this->_light2 = new Light();$this->_light3 = new Light();$this->_sensor = new Sensor();$this->_alarm = new Alarm();}public function activate() {$this->_camera1->turnOn();$this->_camera2->turnOn();$this->_light1->turnOn();$this->_light2->turnOn();$this->_light3->turnOn();$this->_sensor->activate();$this->_alarm->activate();}public function deactivate() {$this->_camera1->turnOff();$this->_camera2->turnOff();$this->_light1->turnOff();$this->_light2->turnOff();$this->_light3->turnOff();$this->_sensor->deactivate();$this->_alarm->deactivate();} }//client $security = new SecurityFacade(); $security->activate();

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轉載于:https://www.cnblogs.com/taozi32/p/9226751.html

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