PHP工厂模式计算面积与周长

<?php
interface InterfaceShape
{
 ???function getArea();
 ???function getCircumference();
}

/**
 * 矩形
 */
class Rectangle implements InterfaceShape
{
 ???private $width;
 ???private $height;
 ???public function __construct($width,$height){
 ???????$this->width=$width;
 ???????$this->height=$height;
 ???}
 ???public function getArea(){
 ???????return $this->width*$this->height;
 ???}
 ???public function getCircumference(){
 ???????return 2*$this->width+2*$this->height;
 ???}
}
/**
 * 圆
 */
class circle implements InterfaceShape{
 ???private $redius;
 ???public function __construct($redius){
 ???????$this->redius = $redius;
 ???}
 ???public function getArea(){
 ???????return M_PI*pow($this->redius,2);
 ???}
 ???public function getCircumference(){
 ???????return M*PI*2*$this->redius;
 ???}
}
class FactoryShape{//func_get_arg(索引)返回当前函数指定索引的参数值，返回string格式；
 ???static public function create(){
 ???????switch (func_num_args()) {
 ???????????case 1:
 ???????????????return new circle(func_get_arg(0));
 ???????????case 2:
 ???????????????return new Rectangle(func_get_arg(0),func_get_arg(1));
 ???????????default:
 ???????????????break;
 ???????}
 ???}
}
$rect = FactoryShape::create(5,5);
var_dump($rect);
echo "<br>";
$circle = FactoryShape::create(4);
var_dump($circle);
?>

PHP工厂模式计算面积与周长

原文地址：https://www.cnblogs.com/isuansuan/p/9767105.html