POP3 class written using PHP Socket_PHP tutorial-PHP Tutorial-php.cn

When I looked at the POP3/SMTP protocol, I wanted to try writing an operation class myself. The core is nothing, just use fsockopen, and then write/receive data. Only the core functions are implemented. It is regarded as learning Socket operation. Practice. It refers to RFC 2449 and part of the code of Uebimiau, a simple foreign web mail system, but it is definitely not copied from him. HOHO, it is absolutely original.

Copy code The code is as follows:

class SocketPOPClient
{
var $strMessage = '';
var $intErrorNum = 0;
var $bolDebug = false;

var $strEmail = '';
var $strPasswd = '';
var $strHost = '';
var $intPort = 110;
var $intConnSecond = 30;
var $intBuffSize = 8192;

var $resHandler = NULL;
var $bolIsLogin = false;
var $strRequest = '';
var $strResponse = '';
var $arrRequest = array();
var $arrResponse = array();

//---------------
// 基础操作
//---------------

//构造函数
function SocketPOP3Client($strLoginEmail, $strLoginPasswd, $strPopHost='', $intPort='')
{
$this->strEmail        = trim(strtolower($strLoginEmail));
        $this->strPasswd    = trim($strLoginPasswd);
        $this->strHost        = trim(strtolower($strPopHost));

        if ($this->strEmail=='' || $this->strPasswd=='')
        {
            $this->setMessage('Email address or Passwd is empty', 1001);
            return false;
        }
        if (!PReg_match("/^[\w-]+(\.[\w-]+)*@[\w-]+(\.[\w-]+)+$/i", $this->strEmail))
        {
            $this->setMessage('Email address invalid', 1002);
            return false;
        }
        if ($this->strHost=='')
        {
            $this->strHost = substr(strrchr($this->strEmail, "@"), 1);
        }
        if ($intPort!='')
        {
            $this->intPort = $intPort;
        }
        $this->connectHost();
    }

    //连接服务器
    function connectHost()
    {
        if ($this->bolDebug)
        {
            echo "Connection ".$this->strHost." ...\r\n";
        }
        if (!$this->getIsConnect())
        {
            if ($this->strHost=='' || $this->intPort=='')
            {
                $this->setMessage('POP3 host or Port is empty', 1003);
                return false;
            }
            $this->resHandler = @fsockopen($this->strHost, $this->intPort, &$this->intErrorNum, &$this->strMessage, $this->intConnSecond);
            if (!$this->resHandler)
            {
                $strErrMsg = 'Connection POP3 host: '.$this->strHost.' failed';
                $intErrNum = 2001;
                $this->setMessage($strErrMsg, $intErrNum);
                return false;
            }
            $this->getLineResponse();
            if (!$this->getRestIsSucceed())
            {
                return false;
            }
        }
        return true;
    }

    //关闭连接
    function closeHost()
    {
        if ($this->resHandler)
        {
            fclose($this->resHandler);
        }
        return true;
    }

    //发送指令
    function sendCommand($strCommand)
    {
        if ($this->bolDebug)
        {
            if (!preg_match("/PASS/", $strCommand))
            {
                echo "Send Command: ".$strCommand."\r\n";
            }
            else
            {
                echo "Send Command: PASS ******\r\n";
            }

        }
        if (!$this->getIsConnect())
        {
            return false;
        }
        if (trim($strCommand)=='')
        {
            $this->setMessage('Request command is empty', 1004);
            return false;
        }
        $this->strRequest = $strCommand."\r\n";
        $this->arrRequest[] = $strCommand;
        fputs($this->resHandler, $this->strRequest);
        return true;
    }

    //提取响应信息第一行
    function getLineResponse()
    {
        if (!$this->getIsConnect())
        {
            return false;
        }
        $this->strResponse = fgets($this->resHandler, $this->intBuffSize);
        $this->arrResponse[] = $this->strResponse;

return $this->strResponse;
}

    //提取若干响应信息,$intReturnType是返回值类型, 1为字符串, 2为数组
    function getRespMessage($intReturnType)
    {
        if (!$this->getIsConnect())
        {
            return false;
        }
        if ($intReturnType == 1)
        {
            $strAllResponse = '';
            while(!feof($this->resHandler))
            {
                $strLineResponse = $this->getLineResponse();
                if (preg_match("/^\+OK/", $strLineResponse))
                {
                    continue;
                }
                if (trim($strLineResponse)=='.')
                {
                    break;
                }
                $strAllResponse .= $strLineResponse;
            }
            return $strAllResponse;
        }
        else
        {
            $arrAllResponse = array();
            while(!feof($this->resHandler))
            {
                $strLineResponse = $this->getLineResponse();
                if (preg_match("/^\+OK/", $strLineResponse))
                {
                    continue;
                }
                if (trim($strLineResponse)=='.')
                {
                    break;
                }
                $arrAllResponse[] = $strLineResponse;
            }
            return $arrAllResponse;
        }
    }

    //提取请求是否成功
    function getRestIsSucceed($strRespMessage='')
    {
        if (trim($responseMessage)=='')
        {
            if ($this->strResponse=='')
            {
                $this->getLineResponse();
            }
            $strRespMessage = $this->strResponse;
        }
        if (trim($strRespMessage)=='')
        {
            $this->setMessage('Response message is empty', 2003);
            return false;
        }
        if (!preg_match("/^\+OK/", $strRespMessage))
        {
            $this->setMessage($strRespMessage, 2000);
            return false;
        }
        return true;
    }

    //获取是否已连接
    function getIsConnect()
    {
        if (!$this->resHandler)
        {
            $this->setMessage("Nonexistent availability connection handler", 2002);
            return false;
        }
        return true;
    }

    //设置消息
    function setMessage($strMessage, $intErrorNum)
    {
        if (trim($strMessage)=='' || $intErrorNum=='')
        {
            return false;
        }
        $this->strMessage    = $strMessage;
        $this->intErrorNum    = $intErrorNum;
        return true;
    }

    //获取消息
    function getMessage()
    {
        return $this->strMessage;
    }

    //获取错误号
    function getErrorNum()
    {
        return $this->intErrorNum;
    }

    //获取请求信息
    function getRequest()
    {
        return $this->strRequest;
    }

    //获取响应信息
    function getResponse()
    {
        return $this->strResponse;
    }

    //---------------
    // 邮件原子操作
    //---------------

    //登录邮箱
    function popLogin()
    {
        if (!$this->getIsConnect())
        {
            return false;
        }
        $this->sendCommand("USER ".$this->strEmail);
        $this->getLineResponse();
        $bolUserRight = $this->getRestIsSucceed();

        $this->sendCommand("PASS ".$this->strPasswd);
        $this->getLineResponse();
        $bolPassRight = $this->getRestIsSucceed();

        if (!$bolUserRight || !$bolPassRight)
        {
            $this->setMessage($this->strResponse, 2004);
            return false;
        }
        $this->bolIsLogin = true;
        return true;
    }

    //退出登录
    function popLogout()
    {
        if (!$this->getIsConnect() && $this->bolIsLogin)
        {
            return false;
        }
        $this->sendCommand("QUIT");
        $this->getLineResponse();
        if (!$this->getRestIsSucceed())
        {
            return false;
        }
        return true;
    }

    //获取是否在线
    function getIsOnline()
    {
        if (!$this->getIsConnect() && $this->bolIsLogin)
        {
            return false;
        }
        $this->sendCommand("NOOP");
        $this->getLineResponse();
        if (!$this->getRestIsSucceed())
        {
            return false;
        }
        return true;
    }

    //获取邮件数量和字节数(返回数组)
    function getMailSum($intReturnType=2)
    {
        if (!$this->getIsConnect() && $this->bolIsLogin)
        {
            return false;
        }
        $this->sendCommand("STAT");
        $strLineResponse = $this->getLineResponse();
        if (!$this->getRestIsSucceed())
        {
            return false;
        }
        if ($intReturnType==1)
        {
            return     $this->strResponse;
        }
        else
        {
            $arrResponse = explode(" ", $this->strResponse);
            if (!is_array($arrResponse) || count($arrResponse)<=0)
{
$this->setMessage('STAT command response message is error', 2006);
                return false;
            }
            return array($arrResponse[1], $arrResponse[2]);
        }
    }

    //获取指定邮件得session Id
    function getMailSessId($intMailId, $intReturnType=2)
    {
        if (!$this->getIsConnect() && $this->bolIsLogin)
        {
            return false;
        }
        if (!$intMailId = intval($intMailId))
        {
            $this->setMessage('Mail message id invalid', 1005);
            return false;
        }
        $this->sendCommand("UIDL ". $intMailId);
        $this->getLineResponse();
        if (!$this->getRestIsSucceed())
        {
            return false;
        }
        if ($intReturnType == 1)
        {
            return     $this->strResponse;
        }
        else
        {
            $arrResponse = explode(" ", $this->strResponse);
            if (!is_array($arrResponse) || count($arrResponse)<=0)
{
$this->setMessage('UIDL command response message is error', 2006);
                return false;
            }
            return array($arrResponse[1], $arrResponse[2]);
        }
    }

    //取得某个邮件的大小
    function getMailSize($intMailId, $intReturnType=2)
    {
        if (!$this->getIsConnect() && $this->bolIsLogin)
        {
            return false;
        }
        $this->sendCommand("LIST ".$intMailId);
        $this->getLineResponse();
        if (!$this->getRestIsSucceed())
        {
            return false;
        }
        if ($intReturnType == 1)
        {
            return $this->strResponse;
        }
        else
        {
            $arrMessage = explode(' ', $this->strResponse);
            return array($arrMessage[1], $arrMessage[2]);
        }
    }

    //获取邮件基本列表数组
    function getMailBaseList($intReturnType=2)
    {
        if (!$this->getIsConnect() && $this->bolIsLogin)
        {
            return false;
        }
        $this->sendCommand("LIST");
        $this->getLineResponse();
        if (!$this->getRestIsSucceed())
        {
            return false;
        }
        return $this->getRespMessage($intReturnType);
    }

    //获取指定邮件所有信息，intReturnType是返回值类型，1是字符串,2是数组
    function getMailMessage($intMailId, $intReturnType=1)
    {
        if (!$this->getIsConnect() && $this->bolIsLogin)
        {
            return false;
        }
        if (!$intMailId = intval($intMailId))
        {
            $this->setMessage('Mail message id invalid', 1005);
            return false;
        }
        $this->sendCommand("RETR ". $intMailId);
        $this->getLineResponse();
        if (!$this->getRestIsSucceed())
        {
            return false;
        }
        return $this->getRespMessage($intReturnType);
    }

    //获取某邮件前指定行, $intReturnType 返回值类型，1是字符串，2是数组
    function getMailTopMessage($intMailId, $intTopLines=10, $intReturnType=1)
    {
        if (!$this->getIsConnect() && $this->bolIsLogin)
        {
            return false;
        }
        if (!$intMailId=intval($intMailId) || !$intTopLines=int($intTopLines))
        {
            $this->setMessage('Mail message id or Top lines number invalid', 1005);
            return false;
        }
        $this->sendCommand("TOP ". $intMailId ." ". $intTopLines);
        $this->getLineResponse();
        if (!$this->getRestIsSucceed())
        {
            return false;
        }
        return $this->getRespMessage($intReturnType);
    }

//Delete mail
function delMail($intMailId)
{
if (!$this->getIsConnect() && $this->bolIsLogin)
{
return false;
}
if (!$intMailId=intval($intMailId))
Return false ;
}
$this->sendCommand("DELE ".$intMailId);
$this->getLineResponse();
if (!$this->getRestIsSucceed())

//Reset deleted emails marked as not deleted
function resetDeleMail()
{
if (!$this->getIsConnect() && $this->bolIsLogin)
                                                   return false; this-> getRestIsSucceed())

//---------------

// Debugging operation
//---------------

//Output object information
function printObject()
{
print_r($this);
exit;
}

//Output error message
function printError()
{
echo "[Error Msg] : $strMessage
n";
echo "[Error Num] : $intErrorNum
n";

exit;

}

//Output host information

function printHost()

{
echo "[Host] : $this->strHost
n";
echo "[Port] : $this->intPort
n";
echo "[Email] : $this->strEmail
n";
echo "[Passwd] : ****** **
n";
exit;

}

//Output connection information
function printConnect()
{
echo "[Connect] : $this->resHandler
n";
echo "[Request] : $this->strRequest
n";
echo "[Response] : $this->strResponse
n"; >

//Test code
//For example: $o = SocketPOP3Client('Email address', 'Password', 'POP3 server', 'POP3 port')

/*
set_time_limit(0);
$o = new SocketPOPClient('abc@126.com', '123456', 'pop.126.com', '110');
$o->popLogin();
print_r($o->getMailBaseList());

print_r($o->getMailSum(1));

print_r($o-> getMailTopMessage(2, 2, 2));
$o->popLogout();
$o->closeHost();
$o->printObject();
* /
?>