PHP design pattern simple complaint page example, php design pattern example_PHP tutorial

PHP design pattern simple complaint page example, php design pattern example

This article introduces the implementation code of PHP simple complaint page and shares it with you for your reference. The specific content is as follows

php code:

<&#63;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 id="PHP设计模式">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");

html code:

<!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 id="用户名">用户名</h1>
      <select id="username" name="username">
        <option value="Tom">Tom</option>
        <option value="Lily">Lily</option>
      </select>
      <h1 id="投诉方式">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 id="处理级别">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 id="投诉内容">投诉内容</h1>
      <textarea id="content" name="content" rows="3"></textarea>
      <button type="submit">提交</button>
    </form>
  </body>
</html>

The above is the entire content of this article, I hope it will be helpful to everyone’s study.

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