PHP设计模式之简单投诉页面实例

本文实例介绍了PHP简单投诉页面的实现代码，分享给大家供大家参考，具体内容如下

php代码：

<?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");