模式绕晕了 问一下Login::handleLogin()怎么调用

interface Observable{    function attach(Observer $observer);    function detach(Observer $observer);    function notify();}// ...login类class Login implements Observable{    private $observers;    private $status = array();    const LOGIN_USER_UNKNOWN = 1;    const LOGIN_WRONG_PASS = 2;    const LOGIN_ACCESS = 3;        function __construct(){        $this->observers = array();    }        function attach(Observer $observer){        $this->observers[] = $observer;    }        function detach(Observer $observer){        $newobservers[] = array();        foreach ($this->observers as $obs){            if ( ($obs !== $observer)){                $newservers[] = $obs;            }        }        $this->observers = $newobservers;    }        function notify(){        foreach ($this->observers as $obs){            $obs->update($this);        }    }        private function setStatus($status, $user, $ip){        $this->status = array($status, $user, $ip);    }        function getStatus(){        return $this->status;    }        function handleLogin($user, $pass, $ip){        switch (rand(1,3)){            case 1:                $this->setStatus(self::LOGIN_ACCESS, $user, $ip);                $ret = true; break;            case 2:                $this->setStatus(self::LOGIN_WRONG_PASS, $user, $ip);                $ret = false; break;            case 3:                $this->setStatus(self::LOGIN_USER_UNKNOWN, $user, $ip);                $ret = false; break;        }        $this->notify();        return $ret;    }}interface Observer{    function update(Observable $observable);}/*    class SecurityMonitor implements Observer{    function update(Observable $observable){    	//  print_r($Observable);exit;        $status = $observable->getStatus();        if ($status[0] == Login::LOGIN_WRONG_PASS){            // 发送邮件给系统管理员            print __CLASS__ . ":	$status[1] sending mail to sysadmin
";        }    }}$login = new Login();$login->attach(new SecurityMonitor());$login->handleLogin('root', 'root', '127.0.0.1');*/abstract class LoginObserver implements Observer{    private $login;    function __construct(Login $login){        $this->login = $login;        $login->attach($this);    }        function update(Observable $observable){        if ($observable === $this->login){            $this->doUpdate($observable);        }    }            abstract function doUpdate(Login $login);}class SecurityMonitor extends LoginObserver{    function doUpdate(Login $login){    	          $status = $login->getStatus();        if ($status[0] == Login::LOGIN_WRONG_PASS){            // 发送邮件给系统管理员            print __CLASS__ . ":	sending mail to sysadmin
";        }    }}class GeneralLogger extends LoginObserver{    function doUpdate(Login $login){        $status = $login->getStatus();        //  记录登陆数据到日志        print __CLASS__ . ":	add login data to log
";    }}class PartnershipTool extends LoginObserver{    function doUpdate(Login $login){        $status = $login->getStatus();        //  检查IP地址        //  如果匹配列表，则设置cookie        print __CLASS__ . ":	set cookie if IP matches a list
";    }}$login = new Login();new SecurityMonitor($login);new GeneralLogger($login);new PartnershipTool($login);

回复讨论(解决方案)

你 80 到 82 行注释掉的代码不就是调用方式吗？

不过 handleLogin 内部居然以随机方式工作。不明白你要干什么

你 80 到 82 行注释掉的代码不就是调用方式吗？

不过 handleLogin 内部居然以随机方式工作。不明白你要干什么