SplSubject 内容产述

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<?phpnamespace app\common\model;use SplObserver;use SplSubject;use SplObjectStorage;class User implements SplSubject{    private $email;    private $username;    private $mobile;    private $password;    /**     * @var SplObjectStorage     */    private $observers = NULL;    public function __construct($email, $username, $mobile, $password) {        $this->email = $email;        $this->username = $username;        $this->mobile = $mobile;        $this->password = $password;        $this->observers = new SplObjectStorage();    }    public function attach(SplObserver $observer)    {        $this->observers->attach($observer);    }    public function detach(SplObserver $observer)    {        $this->observers->detach($observer);    }    public function notify()    {        $userInfo = array(            'username' => $this->username,            'password' => $this->password,            'email' => $this->email,            'mobile' => $this->mobile,       );         foreach ($this->observers as $observer) {            $observer->update($this, $userInfo);         }     }    public function create()    {        echo  __METHOD__, PHP_EOL;        $this->notify();    }    public function changePassword($newPassword)    {        echo __METHOD__, PHP_EOL;        $this->password = $newPassword;        $this->notify();    }    public function resetPassword()    {        echo __METHOD__, PHP_EOL;        $this->password = mt_rand(100000, 999999);        $this->notify();    }}

<?php namespace app\myinterface; class WebsiteSender implements \SplObserver {     public function update(\SplSubject $subject) {       $userInfo = func_get_arg(1);       echo "向 {$userInfo['email']} 发送站内信成功。内容是：你好 {$userInfo['username']}" .           "你的新密码是 {$userInfo['password']}，请妥善保管";       echo PHP_EOL;   }  }

$email_sender = new EmailSender(); $mobile_sender = new MobileSender(); $web_sender = new WebsiteSender();  $user = new User('user1@domain.com', '张三', '13610002000', '123456');  // 创建用户时通过 Email 和手机短信通知用户$user->attach($email_sender);$user->attach($mobile_sender);$user->create($user);      echo '<br/>'; // 用户忘记密码后重置密码，还需要通过站内小纸条通知用户$user->attach($web_sender);$user->resetPassword();      echo '<br/>'; // 用户变更了密码，但是不要给他的手机发短信$user->detach($mobile_sender);echo '<br/>';$user->changePassword('654321');echo PHP_EOL;如果我的文章对你有帮助，就请博主喝杯咖啡吧

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