门面模式 （Facade）又称外观模式，用于为子系统中的一组接口提供一个一致的界面。门面模式定义了一个高层接口，这个接口使得子系统更加容易使用：引入门面角色之后，用户只需要直接与门面角色交互，用户与子系统之间的复杂关系由门面角色来实现，从而降低了系统的耦
<?phpclass 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();PHP设计模式 - 门面模式
原文地址：https://www.cnblogs.com/taozi32/p/9226751.html