####代理模式* 组成* 抽象角色:通过接口或抽象类生命真实角色实现的业务方法* 代理角色:实现抽象角色,是真是角色的代理* 真实角色:实现抽象角色,定义真实角色所要实现的业务逻辑#####实现Mysql连接类```/** * Created by PhpStorm. * User: gewenrui * Date: 16/3/13 * Time: 上午8:16 */namespace db;//php允许借口存储常量interface IConnectInfo{ //服务器名称 const HOST = "localhost"; //用户名 const USERNAME = "root"; //密码 const PASSWORD = ""; //数据库名称444444444444444444444 const DBNAME ="proxylog"; public function doConnect();}class UniversalConnect implements IConnectInfo{ //实现了作用域解析操作符来访问连接值 //静态变量处理速度优势,提供私有可见性提供的封装性 private static $server = IConnectInfo::HOST; private static $currentDB = IConnectInfo::DBNAME; private static $username = IConnectInfo::USERNAME; private static $password = IConnectInfo::PASSWORD; private static $hookup; public function doConnect() { //连接数据库 self::$hookup = mysqli_connect(self::$server,self::$username,self::$password,self::$currentDB); if(self::$hookup){ echo "Successfucl connection to MYSQL"."</br>"; }else if(mysqli_connect_error(self::$hookup)){ echo "".mysqli_connect_error(); } return self::$hookup; }}```######进行新建表操作```class CreateTable{ //设置表名 private $tableMaster = "proxyLog"; private $hookup; public function __construct() { $this->tableMaster = "proxyLog"; $this->hookup = UniversalConnect::doConnect(); $drop = "DROP TABLE IF EXITS $this->tableMaster"."</br>"; //echo $drop; if($this->hookup->query($drop) == true){ printf("Old table %s has been dropped"."</br>",$this->tableMaster); } $sql = "CREATE TABLE $this->tableMaster (uname VARCHAR(15),pw VARCHAR(120))"; //echo $sql; if($this->hookup->query($sql) == true){ echo "Table{$this->tableMaster} has been created successful"; } $this->hookup->close(); }}```######向表中添加数据```class HashRegister{ public function __construct() { $this->tableMaster = "proxyLog"; $this->hookup = UniversalConnect::doConnect(); $username = $this->hookup->real_escape_string(trim($_POST['uname'])); $password = $this->hookup->real_escape_string(trim($_POST['pw'])); $sql = "INSERT INTO $this->tableMaster(uname,pw) VALUES('$username',md5('$password'))"; echo $sql; if($this->hookup->query($sql)){ echo "registeration conpleted"; }else if($result = $this->hookup->query($sql) == false){ printf("Invalid query : %s while query %s"); exit(); $this->hookup->close(); } }}```#####代理模式实现用户登陆```<?php/** * Created by PhpStorm. * User: gewenrui * Date: 16/3/13 * Time: 上午10:35 */include "demo26.php";interface ISubject{ function request();}//生成一个客户端接受用户post的数据//实现登陆代理class Client{ private $proxy; private $un; private $pw; public function __construct() { $this->tableMaster = "proxyLog"; $this->hookup = \db\UniversalConnect::doConnect(); $this->un = $this->hookup->real_escape_string(trim($_POST['uname'])); $this->pw = $this->hookup->real_escape_string(trim($_POST['pw'])); //代理模式 $this->getIface($this->proxy = new Proxy()); } public function getIface(ISubject $proxy){ $proxy->login($this->un,$this->pw); }}//代理类class Proxy implements ISubject{ private $tableMaster; private $hookup; private $logGood; private $realSubject; public function login($uNow,$pwNow){ $uname = $uNow; $pw = md5($pwNow); $this->logGood = false; $this->tableMaster = "proxyLog"; $this->hookup = \db\UniversalConnect::doConnect(); $sql = "SELECT pw from $this->tableMaster WHERE uname = '$uname'"; if($result = $this->hookup->query($sql)){ $row = $result->fetch_array(MYSQLI_ASSOC); echo $pw; if($row['pw'] == $pw){ $this->logGood = true; } $result->close(); }else if(($result = $this->hookup->query($sql)===false)){ printf("failed %s",$this->hookup->error); exit(); } $this->hookup->close(); if($this->logGood){ //执行request方法 $this->request(); }else{ echo "username and/or password not on record"; } } public function request() { $this->realSubject = new RealSubject(); $this->realSubject ->request(); }}class RealSubject implements ISubject{ public function request() { $practice = <<<REQUEST <html> <head><body><head> data </head> <body> <ol> <li>fuck u silly b</li> </ol> </body> </html>REQUEST;echo $practice; }}$data = new Client();```登录后复制
