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php工厂模式简单使用说明

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Release: 2017-03-18 14:38:49
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本文章来给大家介绍php入门教程之工厂模式哦,工厂模式概念:实例化对象,用工厂方法替代new操作,有需要了解学习的朋友可参考.

工厂模式实例代码:

<?php
//首先定义什么是人类  
interface Human { 
   //人是愉快的,会笑的  
   public function laugh();  
   //人类还会哭,代表痛苦  
   public function cry(); 
   //人类会说话  
   public function talk();  
} 
//然后定义具体的人种 
class YellowHuman implements Human {//黄色人种,这个翻译的不准确,将就点吧  
   function cry() { var_dump( "黄色人种会哭");} 
   function laugh() {var_dump( "黄色人种会大笑,幸福呀!");} 
   function talk() {var_dump( "黄色人种会说话,一般说的都是双字节"); } 
} 
class WhiteHuman implements Human { //白色人种 
   public function cry() {var_dump("白色人种会哭");}  
   public function laugh() {var_dump("白色人种会大笑,侵略的笑声"); }  
   public function talk() {var_dump("白色人种会说话,一般都是但是单字节!"); }  
} 
class BlackHuman implements Human { //黑色人种 
   public function cry() {var_dump("黑色人种会哭");}  
   public function laugh() {var_dump("黑色人种会大笑,侵略的笑声"); }  
   public function talk() {var_dump("黑色人种会说话,一般都是但是单字节!"); }  
} 
//人种也定义完毕了,那我们把八卦炉定义出来: 
class HumanFactory { 
   //定一个烤箱,泥巴塞进去,人就出来,这个太先进了  
   public static function createHuman( $c ){  
       if ($c instanceof Human ) {//判断是否继承自Human 
           return $c;  
       }else { 
           var_dump("必须跟HuMan有一腿");  
       } 
   }  
} 

var_dump("------------造出的第一批人是这样的:白人-----------------");  
$whiteHuman = HumanFactory::createHuman( new WhiteHuman());  
$whiteHuman->cry();  
$whiteHuman->laugh();  
$whiteHuman->talk();  
     
//女娲第二次造人,火候加足点,然后又出了个次品,黑人  
var_dump("nn------------造出的第二批人是这样的:黑人-----------------");  
$blackHuman = HumanFactory::createHuman(new BlackHuman());  
$blackHuman->cry();  
$blackHuman->laugh();  
$blackHuman->talk();  
     
//第三批人了,这次火候掌握的正好,黄色人种(不写黄人,免得引起歧义),备注:RB人不属于此列  
var_dump("nn------------造出的第三批人是这样的:黄色人种-----------------");  
$yellowHuman = HumanFactory::createHuman(new YellowHuman());  
$yellowHuman->cry();  
$yellowHuman->laugh();  
$yellowHuman->talk(); 
?>
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