<?php/****自学it网 高端PHP培训论  坛: http://www.zixue.it微  博: http://weibo.com/Yshiba****//**用户往php0620@163.com发送一封邮件,内容随意系统就可以把此用户激活1: 用PHP+POP3协议收取信件(PHP+SOCKET编程)2: 收到信件,分析发件人,并激活该用户3: 每隔几分钟,自动运行一次(linux下用crontab做定时任务)**/class pop3 {    const CRLF = "\r\n";    protected $host = ‘pop3.163.com‘;    protected $port = 110;    protected $errno = -1;    protected $errstr = ‘‘;    protected $user = ‘xxxxxxxxx‘;    protected $pass = ‘*******‘;    protected $fh = NULL; // 放置连接资源    // 连接服务器    public function conn() {        $this->fh = fsockopen($this->host,$this->port,$this->errno,$this->errstr,3);    }    public function login() {        fwrite($this->fh,‘user ‘ . $this->user . self::CRLF);        if(substr($this->getLine(),0,3) != ‘+OK‘) {            throw new Exception("用户名不正确");        }        fwrite($this->fh,‘pass ‘ . $this->pass . self::CRLF);        if(substr($this->getLine(),0,3) != ‘+OK‘) {            throw new Exception("密码不正确");        }    }    /*    // 查询一共有多少邮件,便于循环取每一封邮件    public function getCnt() {        fwrite($this->fh,‘stat‘ . ‘ ‘ . self::CRLF);        $tmp = explode(‘ ‘,$this->getLine());        return $tmp[1];    }*/    // 查询出所有的邮件发信人    public function getAll() {        fwrite($this->fh,‘top 1 1‘ . self::CRLF);                $post = array();        while( stripos(($row = fgets($this->fh)),‘from:‘) === false) {        }        $post[] = $row;        return $post;    }    protected function getLine() {        return fgets($this->fh);    }    // 发送用户名+密码 登陆    // 获取邮件}$pop = new pop3();try {    $pop->conn();    $pop->login();    echo ‘发信人是‘;print_r($pop->getAll());} catch(exception $e) {    echo $e->getMessage();}// 获取收集人,之后 连接mysql,根据email,激活该用户