PHP设计模式之简单投诉页面实例

<?php

/*
 * 设计模式练习
 * 1.数据库连接类（单例模式）
 * 2.调用接口实现留言本功能（工厂模式）
 * 3.实现分级举报处理功能（责任链模式）
 * 4.发送不同组合的举报信息（桥接模式）
 * 5.发送不同格式的举报信息（适配器模式）
 * 6.在投诉内容后自动追加时间（装饰器模式）
 * 7.根据会员登录信息变换显示风格（观察者模式）
 * 8.根据发帖长度加经验值（策略模式）
 */

interface db {

  function conn();
}

/**
 * 单例模式
 */
class mysqlsingle implements db {

  protected static $_instance = null;

  public static function getinstance() {
    if (!self::$_instance instanceof self) {
      self::$_instance = new self;
    }
    return self::$_instance;
  }

  final protected function __construct() {
    echo 'mysql单例创建成功<br>';
  }

  final protected function __clone() {
    return false;
  }

  public function conn() {
    echo 'mysql连接成功<br>';
  }

}

/**
 * 工厂模式
 */
interface factory {

  function createdb();
}

class mysqlfactory implements factory {

  public function createdb() {
    echo 'mysql工厂创建成功<br>';
    return mysqlsingle::getinstance();
  }

}

/**
 * 根据用户名显示不同风格
 * 观察者模式
 */
class observer implements splsubject {

  protected $_observers = null;
  public $_style = null;

  public function __construct($style) {
    $this->_style = $style;
    $this->_observers = new splobjectstorage();
  }

  public function show() {
    $this->notify();
  }

  public function attach(splobserver $observer) {
    $this->_observers->attach($observer);
  }

  public function detach(splobserver $observer) {
    $this->_observers->detach($observer);
  }

  public function notify() {
    $this->_observers->rewind();
    while ($this->_observers->valid()) {
      $observer = $this->_observers->current();
      $observer->update($this);
      $this->_observers->next();
    }
  }

}

class stylea implements splobserver {

  public function update(splsubject $subject) {
    echo $subject->_style . ' 模块a<br>';
  }

}

class styleb implements splobserver {

  public function update(splsubject $subject) {
    echo $subject->_style . ' 模块b<br>';
  }

}

/**
 * 根据不同方式进行投诉
 * 桥接模式
 */
class bridge {

  protected $_obj = null;

  public function __construct($obj) {
    $this->_obj = $obj;
  }

  public function msg($type) {
    
  }

  public function show() {
    $this->msg();
    $this->_obj->msg();
  }

}

class bridgeemail extends bridge {

  public function msg() {
    echo 'email>>';
  }

}

class bridgesms extends bridge {

  public function msg() {
    echo 'sms>>';
  }

}

class normal {

  public function msg() {
    echo 'normal<br>';
  }

}

class danger {

  public function msg() {
    echo 'danger<br>';
  }

}

/**
 * 适配器模式
 */
class serialize {

  public $content = null;

  public function __construct($content) {
    $this->content = serialize($content);
  }

  public function show() {
    return '序列化格式：<br>' . $this->content;
  }

}

class jsonadapter extends serialize {

  public function __construct($content) {
    parent::__construct($content);
    $tmp = unserialize($this->content);
    $this->content = json_encode($tmp, true);
  }

  public function show() {
    return 'json格式：<br>' . $this->content;
  }

}

/**
 * 在投诉内容后自动追加
 * 装饰器模式
 */
class base {

  protected $_content = null;

  public function __construct($content) {
    $this->_content = $content;
  }

  public function getcontent() {
    return $this->_content;
  }

}

class decorator {

  private $_base = null;

  public function __construct(base $base) {
    $this->_base = $base;
  }

  public function show() {
    return $this->_base->getcontent() . '>>系统时间：' . date('y-m-d h:i:s', time());
  }

}

/**
 * 分级举报处理功能
 * 责任链模式
 */
class level1 {

  protected $_level = 1;
  protected $_top = 'level2';

  public function deal($level) {
    if ($level <= $this->_level) {
      echo '处理级别：1<br>';
      return;
    }
    $top = new $this->_top;
    $top->deal($level);
  }

}

class level2 {

  protected $_level = 2;
  protected $_top = 'level3';

  public function deal($level) {
    if ($level <= $this->_level) {
      echo '处理级别：2<br>';
      return;
    }
    $top = new $this->_top;
    $top->deal($level);
  }

}

class level3 {

  protected $_level = 3;
  protected $_top = 'level2';

  public function deal($level) {
    echo '处理级别：3<br>';
    return;
  }

}

if (!empty($_post)) {
  echo '<h1>php设计模式</h1>';
  //连接数据库——工厂+单例模式
  $mysqlfactory = new mysqlfactory();
  $single = $mysqlfactory->createdb();
  $single->conn();
  echo '<br>';
  //观察者模式
  $username = $_post['username'];
  $ob = new observer($username);
  $a = new stylea();
  $ob->attach($a);
  $b = new styleb();
  $ob->attach($b);
  $ob->show();
  echo '<br>';
  $ob->detach($b);
  $ob->show();
  echo '<br>';
  //桥接模式
  $typem = $_post['typem'];
  $typen = 'bridge' . $_post['typen'];
  $obj = new $typen(new $typem);
  $obj->show();
  echo '<br>';
  //适配器模式
  $post = $_post;
  $obj = new serialize($post);
  echo $obj->show();
  echo '<br>';
  $json = new jsonadapter($post);
  echo $json->show();
  echo '<br>';
  echo '<br>';
  //装饰器模式
  $content = $_post['content'];
  $decorator = new decorator(new base($content));
  echo $decorator->show();
  echo '<br>';
  //责任链模式
  echo '<br>';
  $level = $_post['level'];
  $deal = new level1();
  $deal->deal(intval($level));
  return;
}
require("0.html");

<!doctype html>
<!--
to change this license header, choose license headers in project properties.
to change this template file, choose tools | templates
and open the template in the editor.
-->
<html>
  <head>
    <title>php设计模式</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <style>
      div{border:solid gray 1px;margin-top:10px;height: 100px;width: 200px;}
    </style>
  </head>
  <body>
    <form action="0.php" method="post">
      <h1>用户名</h1>
      <select id="username" name="username">
        <option value="tom">tom</option>
        <option value="lily">lily</option>
      </select>
      <h1>投诉方式</h1>
      <select id="type" name="typem">
        <option value="normal">normal</option>
        <option value="danger">danger</option>
      </select>
      <select id="type" name="typen">
        <option value="email">email</option>
        <option value="sms">sms</option>
      </select>
      <h1>处理级别</h1>
      <select id="level" name="level">
        <option value="1">1</option>
        <option value="2">2</option>
        <option value="3">3</option>
      </select>
      <h1>投诉内容</h1>
      <textarea id="content" name="content" rows="3"></textarea>
      <button type="submit">提交</button>
    </form>
  </body>
</html>