【php设计模式】门面模式

<?php

interface Shape{
    public function draw();
}

class Circle implements Shape{
    public function draw(){
        echo "画一个圆形\n";
    }
}

class Rectangle implements Shape{
    public function draw(){
        echo "画一个矩形\n";
    }
}

class Square implements Shape{
    public function draw(){
        echo "画一个正方形\n";
    }
}

class ShapeMark{

    public $circle;
    public $rectangle;
    public $square;

    public function __construct(){
        $this->circle = new Circle();
        $this->rectangle = new Rectangle();
        $this->square = new Square();
    }

    public function drawCircle(){
        $this->circle->draw();
    }

    public function drawRectangle(){
        $this->rectangle->draw();
    }

    public function drawSquare(){
        $this->square->draw();
    }
}

$shapemark = new shapemark();
$shapemark->drawCircle();//画一个圆形
$shapemark->drawRectangle();//画一个矩形
$shapemark->drawSquare();//画一个正方形