<?php
//文件名IConnectInfo.php
interface IConnectInfo
{const Host     = "localhost";const UserName = "root";const Password = "";const DBName   = "bergift";public function doConnect();
}
?>

<?php
include_once('IConnectInfo.php');
class UniversalConnect implements IConnectInfo
{private static $Server    = IConnectInfo::Host;private static $CurrentDB = IConnectInfo::DBName;private static $User      = IConnectInfo::UserName;private static $Password  = IConnectInfo::Password;private static $HookUp;public function doConnect(){self::$HookUp = mysqli_connect(self::$Server,self::$User,self::$Password,self::$CurrentDB);if(self::$HookUp){}elseif(mysqli_connect_error(self::$HookUp)){echo "Fail: ".mysqli_connect_error;}return self::$HookUp;}
}
?>

<?php
//文件名ISubject.php
Interface ISubject
{function request();
}
?>

<?php
//文件名Proxy.php
include_once('ISubject.php');
include_once('RealSubject.php');
include_once('UniversalConnect.php');class Proxy implements ISubject
{private $TableMaster;private $HookUp;private $LoginSuccess;private $RealSubject;public function login($UserNow,$PassNow){$UserName = $UserNow;$PassWord = md5($PassNow);$this->LoginSuccess = false;$this->TableMaster  = "BAdmin";$this->HookUp        = UniversalConnect::doConnect();$sql = "SELECT password from $this->TableMaster WHERE username = '$UserName'";if($result = $this->HookUp->query($sql)){$row = $result->fetch_array(MYSQLI_ASSOC);if($row['password']==$PassWord){$this->LoginSuccess = true;}$result->close();}elseif(($result = $this->HookUp->query($sql))===false){echo "Failed".$this->HookUp->error;exit();}$this->HookUp->close();if($this->LoginSuccess){$this->request();}else{header("Location:index.php");}}public function register($UserNow,$PassNow){$UserName = $UserNow;$PassWord = md5($PassNow);$this->LoginSuccess = false;$this->TableMaster  = "BAdmin";$this->HookUp        = UniversalConnect::doConnect();$sql = "INSERT INTO $this->TableMaster VALUES('$UserName','$PassWord')";if($result = $this->HookUp->query($sql)){$this->LoginSuccess = true;}elseif(($result = $this->HookUp->query($sql))===false){echo "Failed".$this->HookUp->error;exit();//header("Location:index.php");
        }$this->HookUp->close();if($this->LoginSuccess){echo "<script>alert('Success!');</script>";}else{header("Location:index.php");}}public function request(){$this->realSubject = new RealSubject();$this->realSubject->request();}
}
?>

<?php
//文件名Client.php
include_once('Proxy.php');
class Client
{private $Proxy;private $UserName;private $PassWord;public function __construct(){$this->TableMaster = 'BAdmin';$this->HookUp      = UniversalConnect::doConnect();$this->UserName    = $this->HookUp->real_escape_string(trim($_POST['username']));$this->PassWord    = $this->HookUp->real_escape_string(trim($_POST['password']));if($_GET['do']==='register'){$this->getRegis($this->proxy=new Proxy());}elseif($_GET['do']==='login'){$this->getIface($this->proxy=new Proxy());}}private function getIface(ISubject $proxy){$proxy->login($this->UserName,$this->PassWord);}private function getRegis(ISubject $proxy){$proxy->register($this->UserName,$this->PassWord);}
}
$Worker = new Client();
?>

<?php
//文件名RealSubject.php
include_once('ISubject.php');
class RealSubject implements ISubject
{public function request(){session_save_path(dirname(__FILE__).'/sess/');@session_start();$_SESSION['bergift'] = 'admin';header("Location:main.php");}
}
?>