PHP设计模式（四）原型模式Prototype实例详解【创建型】

<?php
/**
 * 原型模式 
 */
 
/**
 * 抽象原型角色
 */
interface Prototype {
  public function copy();
}
 
/**
 * 具体原型角色
 */
class ConcretePrototype implements Prototype{
 
  private $_name;
 
  public function __construct($name) {
    $this->_name = $name;
  }
 
  public function setName($name) {
    $this->_name = $name;
  }
 
  public function getName() {
    return $this->_name;
  }
 
  public function copy() {
    /** 深拷贝 */
    return clone $this;  
    /** 浅拷贝 */
    //return $this;  
  }
}
 
class Client {
 
   /**
   * Main program.
   */
  public static function main() {
    $object1 = new ConcretePrototype(11);
    $object_copy = $object1->copy();
 
    var_dump($object1->getName());
    echo '<br />';
    var_dump($object_copy->getName());
    echo '<br />';
 
    $object1->setName(22);
    var_dump($object1->getName());
    echo '<br />';
    var_dump($object_copy->getName());
    echo '<br />';
  }
}
Client::main();
?>

<?php
/**
 * abstract Prototype
 *
 */
abstract class ColorPrototype
{
 //Methods
 abstract function copy();
}
 
/**
 * Concrete Prototype
 *
 */
class Color extends ColorPrototype{
 //Fields
 private $red;
 private $green;
 private $blue;
 //Constructors
 function __construct( $red, $green, $red) {
  $this->red = $red;
  $this->green = $green;
  $this->blue = $red;
 }
 /**
  * set red
  *
  * @param unknown_type $red
  */
 public function setRed($red) {
  $this->red = $red;
 }
 
 /**
  * get red
  *
  */
 public function getRed(){
  return $this->red;
 }
 /**
  *set Green
  *
  * @param $green
  */
 public function setGreen($green) {
  $this->green = $green;
 }
 /**
  * get Green
  *
  * @return unknown
  */
 public function getGreen() {
  return $this->green ;
 }
 /**
  *set Blue
  *
  * @param $Blue
   */
 public function setBlue($Blue) {
  $this->blue = $Blue;
 }
 /**
  * get Blue
  *
  * @return unknown
  */
 public function getBlue() {
  return $this->blue ;
 }
 
 /**
 * Enter description here...
 *
 * @return unknown
 */
 function copy(){
 return clone $this;
 }
 
 function display() {
 echo $this->red , ',', $this->green, ',', $this->blue ,'<br>';
 }
}
/**
 * Enter description here...
 *
 */
class ColorManager
{
 // Fields
 static $colors = array();
 // Indexers
 public static function add($name, $value){
 self::$colors[$name] = $value;
 }
 
 public static function getCopy($name) {
 return  self::$colors[$name]->copy();
 }
}
/**
 *Client
 *
 */
class Client
{
 public static function Main()
 {
 //原型：白色
 ColorManager::add("white", new Color( 255, 0, 0 ));
 
 //红色可以由原型白色对象得到，只是重新修改白色: r
 $red = ColorManager::getCopy('white');
 $red->setRed(255);
 $red->display();
 
 //绿色可以由原型白色对象得到，只是重新修改白色: g
 $green = ColorManager::getCopy('white');
 $green->setGreen(255);
 $green->display();
 
 //绿色可以由原型白色对象得到，只是重新修改白色: b
 $Blue = ColorManager::getCopy('white');
 $Blue->setBlue(255);
 $Blue->display();
 }
}
ini_set('display_errors', 'On');
error_reporting(E_ALL & ~ E_DEPRECATED);
Client::Main();
?>