PHP设计模式入门之状态模式原理与实现方法分析

网络编程 2024/11/16 佚名

3 1 2

本文实例讲述了PHP设计模式入门之状态模式原理与实现方法。分享给大家供大家参考，具体如下：

想必大家都用过自动售卖的自动饮料机吧，塞入硬币或纸币，选择想要的饮料，饮料就会在机器的下方滚出。大家有没有相关如果用程序去写一个饮料机要怎么样实现呢？

首先我们可以分享一下这部饮料机有几种状态

一、没有钱的状态

二、有钱的状态

三、售出的状态

四、销售一空的状态

好吧，知道了这些状态之后我们开始写代码了！

JuiceMachine.php

<"you can't insert another coin!<br />";
   }elseif($this->_state == JuiceMachine::NOMONEY){
     echo "you just insert a coin<br />";
     $this->_state = JuiceMachine::HASMONEY;
   }elseif($this->_state == JuiceMachine::SOLD){
     echo "wait a minute, we are giving you a bottle of juice<br />";
   }elseif($this->_state == JuiceMachine::SOLDOUT){
     echo "you can't insert coin, the machine is already soldout<br />";
   }
 }
 
 /**
 * 退回硬币
 */
 public function retreatCoin(){
   if($this->_state == JuiceMachine::HASMONEY ){
     echo "coin return!<br />";
     $this->_state = JuiceMachine::NOMONEY;
   }elseif($this->_state == JuiceMachine::NOMONEY){
     echo "you have'nt inserted a coin yet<br />";
   }elseif($this->_state == JuiceMachine::SOLD){
     echo "sorry, you already clicked the botton<br />";
   }elseif($this->_state == JuiceMachine::SOLDOUT){
     echo "you have'nt inserted a coin yet<br />";
   }
 }
 
 /**
 * 点击饮料对应的按钮
 */
 public function clickButton(){
   if($this->_state == JuiceMachine::HASMONEY ){
     echo "you clicked, we are giving you a bottle of juice...<br />";
     $this->_state = JuiceMachine::SOLD;  //改变饮料机的状态为售出模式
     $this->dispend();
   }elseif($this->_state == JuiceMachine::NOMONEY){
     echo "you clicked,but you hav'nt inserted a coin yet<br />";
   }elseif($this->_state == JuiceMachine::SOLD){
     echo "click twice does'nt get you two bottle of juice<br />";
   }elseif($this->_state == JuiceMachine::SOLDOUT){
     echo "you clicked, but the machine is already soldout<br />";
   }
 }
 
 /**
 * 发放饮料
 */
 public function dispend(){
   if($this->_state == JuiceMachine::HASMONEY ){
     echo "please click the button first<br />";
   }elseif($this->_state == JuiceMachine::NOMONEY){
     echo "you need to pay first<br />";
   }elseif($this->_state == JuiceMachine::SOLD){
     echo "now you get you juice<br />";
     //饮料机中的饮料数量减一
     $this->_count--;
     if($this->_count <= 0){
       echo "opps, runing out of juice<br />";
       //如果这时饮料机中没有饮料了，将饮料机的状态重置为销售一空
       $this->_state = JuiceMachine::SOLDOUT;
     }else{
       //将饮料机的状态重置为没有钱
       $this->_state = JuiceMachine::NOMONEY;
     }
   }elseif($this->_state == JuiceMachine::SOLDOUT){
     //其实这种情况不应该出现
     echo "opps, it appears that we don't have any juice left<br />";
   }
 }
}

index.php

<"//img.jbzj.com/file_images/article/202004/2020426113236984.png" alt="" />
在我们这个项目中的实际类图如下：

具体实现代码：
State.php


<"htmlcode">

<"you just insert a coin<br />";
    //将饮料机的状态切换成有钱的状态
    $this->_juiceMachine->setState($this->_juiceMachine->getHasmoneyState());
  }
 
 /* (non-PHPdoc)
   * @see State::retreatCoin()
   */
  public function retreatCoin()
  {
    // TODO Auto-generated method stub
    echo "you have'nt inserted a coin yet<br />";
  }
 
 /* (non-PHPdoc)
   * @see State::clickButton()
   */
  public function clickButton()
  {
    // TODO Auto-generated method stub
    echo "you clicked,but you hav'nt inserted a coin yet<br />";
  }
 
 /* (non-PHPdoc)
   * @see State::dispend()
   */
  public function dispend()
  {
    // TODO Auto-generated method stub
    echo "you need to pay first<br />";
  }
}




HasmoneyState.php


<"you can't insert another coin!<br />";
  }
  
  /*
   * (non-PHPdoc) @see State::retreatCoin()
   */
  public function retreatCoin()
  {
    // TODO Auto-generated method stub
    echo "coin return!<br />";
    $this->_juiceMachine->setState($this->_juiceMachine->getNomoneyState());
  }
  
  /*
   * (non-PHPdoc) @see State::clickButton()
   */
  public function clickButton()
  {
    // TODO Auto-generated method stub
    echo "you clicked, we are giving you a bottle of juice...<br />";
    // 改变饮料机的状态为售出模式
    $rand = mt_rand(0, 0);
    // 当随机数为0（即1/10的概率）并且饮料机中还有1瓶以上的饮料时
    if ($rand == 0 && $this->_juiceMachine->getCount() > 1) {
      $this->_juiceMachine->setState($this->_juiceMachine->getWinnerState());
    } else {
      $this->_juiceMachine->setState($this->_juiceMachine->getSoldState());
    }
  }
  
  /*
   * (non-PHPdoc) @see State::dispend()
   */
  public function dispend()
  {
    // TODO Auto-generated method stub
    echo "please click the button first<br />";
  }
}




SoldoutState.php


<"you can't insert coin, the machine is already soldout<br />";
  }
 
 /* (non-PHPdoc)
   * @see State::retreatCoin()
   */
  public function retreatCoin()
  {
    // TODO Auto-generated method stub
    echo "you have'nt inserted a coin yet<br />";
  }
 
 /* (non-PHPdoc)
   * @see State::clickButton()
   */
  public function clickButton()
  {
    // TODO Auto-generated method stub
    echo "you clicked, but the machine is already soldout<br />";
  }
 
 /* (non-PHPdoc)
   * @see State::dispend()
   */
  public function dispend()
  {
    // TODO Auto-generated method stub
    echo "opps, it appears that we don't have any juice left<br />";
  }
}




SoldState.php


<"wait a minute, we are giving you a bottle of juice<br />";
  }
 
 /* (non-PHPdoc)
   * @see State::retreatCoin()
   */
  public function retreatCoin()
  {
    // TODO Auto-generated method stub
    echo "sorry, you already clicked the botton<br />";
  }
 
 /* (non-PHPdoc)
   * @see State::clickButton()
   */
  public function clickButton()
  {
    // TODO Auto-generated method stub
    echo "click twice does'nt get you two bottle of juice<br />";
  }
 
 /* (non-PHPdoc)
   * @see State::dispend()
   */
  public function dispend()
  {
    $this->_juiceMachine->decJuice();
    if($this->_juiceMachine->getCount() <= 0){
      echo "opps, runing out of juice<br />";
      //如果这时饮料机中没有饮料了，将饮料机的状态重置为销售一空
       $this->_juiceMachine->setState($this->_juiceMachine->getSoldoutState());
    }else{
      //将饮料机的状态重置为没有钱
       $this->_juiceMachine->setState($this->_juiceMachine->getNomoneyState());
    }
  }
  
}




WinnerState.php


<"wait a minute, we are giving you a bottle of juice<br />";
  }
  
  /*
   * (non-PHPdoc) @see State::retreatCoin()
   */
  public function retreatCoin()
  {
    // TODO Auto-generated method stub
    echo "sorry, you already clicked the botton<br />";
  }
  
  /*
   * (non-PHPdoc) @see State::clickButton()
   */
  public function clickButton()
  {
    // TODO Auto-generated method stub
    echo "click twice does'nt get you two bottle of juice<br />";
  }
  
  /*
   * (non-PHPdoc) @see State::dispend()
   */
  public function dispend()
  {
    echo "you are a winner! you get two bottle of juice!<br />";
    $this->_juiceMachine->decJuice();
    if ($this->_juiceMachine->getCount() > 0) {
      $this->_juiceMachine->decJuice();
      if ($this->_juiceMachine->getCount() <= 0) {
        echo "opps, runing out of juice<br />";
        // 如果这时饮料机中没有饮料了，将饮料机的状态重置为销售一空
        $this->_juiceMachine->setState($this->_juiceMachine->getSoldoutState());
      } else {
        // 将饮料机的状态重置为没有钱
        $this->_juiceMachine->setState($this->_juiceMachine->getSoldoutState());
      }
    } else {
      echo "opps, runing out of juice<br />";
      // 如果这时饮料机中没有饮料了，将饮料机的状态重置为销售一空
      $this->_juiceMachine->setState($this->_juiceMachine->getSoldoutState());
    }
  }
}




JuiceMachine.php


<"now you get you juice<br />";
    //饮料机中的饮料数量减一
    $this->_count--;
  }
  
}




index.php


<"_blank" href="//www.jb51.net/Special/43.htm">php面向对象程序设计入门教程》、《PHP数组(Array)操作技巧大全》、《PHP基本语法入门教程》、《PHP运算与运算符用法总结》、《php字符串(string)用法总结》、《php+mysql数据库操作入门教程》及《php常见数据库操作技巧汇总》
希望本文所述对大家PHP程序设计有所帮助。

                                
                                
                                    PHP,设计模式,状态模式 
                                华山资源网 Design By www.eoogi.com

广告合作：本站广告合作请联系QQ：858582 申请时备注：广告合作（否则不回）
免责声明：本站资源来自互联网收集,仅供用于学习和交流,请遵循相关法律法规,本站一切资源不代表本站立场,如有侵权、后门、不妥请联系本站删除！

华山资源网 Design By www.eoogi.com

评论“PHP设计模式入门之状态模式原理与实现方法分析”

暂无评论...

www.eoogi.com 华山资源网

120,135影音资源

344,641技术资源

22,817软件资源

435,032站长资源

RTX 5090要首发性能要翻倍！三星展示GDDR7显存

三星在GTC上展示了专为下一代游戏GPU设计的GDDR7内存。

首次推出的GDDR7内存模块密度为16GB，每个模块容量为2GB。其速度预设为32 Gbps（PAM3），但也可以降至28 Gbps，以提高产量和初始阶段的整体性能和成本效益。
据三星表示，GDDR7内存的能效将提高20%，同时工作电压仅为1.1V，低于标准的1.2V。通过采用更新的封装材料和优化的电路设计，使得在高速运行时的发热量降低，GDDR7的热阻比GDDR6降低了70%。

更新日志

2024年11月16日

PHP设计模式入门之状态模式原理与实现方法分析

PHP Pipeline 实现中间件的示例代码

PHP设计模式入门之迭代器模式原理与实现方法分析

评论“PHP设计模式入门之状态模式原理与实现方法分析”

RTX 5090要首发性能要翻倍！三星展示GDDR7显存

更新日志

友情链接

PHP设计模式入门之状态模式原理与实现方法分析

PHP Pipeline 实现中间件的示例代码

PHP设计模式入门之迭代器模式原理与实现方法分析

评论“PHP设计模式入门之状态模式原理与实现方法分析”

RTX 5090要首发 性能要翻倍！三星展示GDDR7显存

更新日志

友情链接

RTX 5090要首发性能要翻倍！三星展示GDDR7显存