php 发送邮件与发送邮件类

使用php发电子邮件

include "mail.php";

if(isset($_post['sendto']))
    $sendto = $_post['sendto'];
else
    $sendto = '';

if(isset($_post['subject']))
    $subject = $_post['subject'];
else
    $subject = '';

if(isset($_post['emailcontent']))
    $emailcontent = $_post['emailcontent'];
else
    $emailcontent = '';

if(empty($sendto) || empty($subject) || empty($emailcontent))
{
    echo '请填写收件人email地址、邮件主题和邮件正文。
';
    exit;
}

$sendmail=new smtp_mail("smtp.sina.com", "sina", false);
if($sendmail->send("[email protected]", $sendto, $subject, $emailcontent))
{
    echo "发送成功！";
}
else
{
    echo "www.111com.net发送失败！";
}
?>

class smtp_mail
{
    var $lastmessage;                            //记录最后返回的响应信息
    var $lastact;                                //最后的动作，字符串形式
    var $welcome;                                //用在helo后面，欢迎用户
    var $debug;                                  //是否显示调试信息
    var $smtp;                                   //smtp服务器
    var $port;                                   //smtp端口号
    var $fp;                                     //socket句柄
   
    function smtp_mail($smtp, $welcome="", $debug=false)
    {
        if(empty($smtp)) die("smtp cannt be null!");
       
        $this->smtp=$smtp;
        if(empty($welcome))
        {
            $this->welcome=gethostbyaddr("localhost");
        }
        else
            $this->welcome=$welcome;
        $this->debug=$debug;
       
        $this->lastmessage="";
        $this->lastact="";
        $this->port="25";
    }

    function show_debug($message, $inout)
    {
        $b = false;
        if ($this->debug)
        {
            if($inout=="in")                     //响应信息
            {
                $m='<< ';
                $b = true;
            }
            else                                 //请求指令
                $m='>> ';
            if(!ereg(" $", $message))
                $message .= "";
            $message=nl2br($message);
            if($b)
                echo "${m}${message}";
            else
                echo "${m}${message}";
        }
    }
   
    function do_command($command, $code)
    {
        $this->lastact=$command;
        $this->show_debug($this->lastact, "out");
        fputs ( $this->fp, $this->lastact );
       
        $this->lastmessage = fgets ( $this->fp, 512 );
        $this->show_debug($this->lastmessage, "in");
       
        if(!ereg("^$code", $this->lastmessage))
        {
            return false;
        }
        else
            return true;
    }
   
    function send($from,$to,$subject,$message)
    {
        $this->show_debug("connect to smtp server : ".$this->smtp." ", "out");
        $this->fp = fsockopen ( $this->smtp, $this->port );
        if ( $this->fp )
        {
            set_socket_blocking( $this->fp, true );
            $this->lastmessage=fgets($this->fp,512);
            $this->show_debug($this->lastmessage, "in");
           
            if (! ereg ( "^220", $this->lastmessage ) )
            {
                return false;
            }
            else
            {
                $this->lastact="helo " . $this->welcome . " ";
                if(!$this->do_command($this->lastact, "250"))
                {
                    fclose($this->fp);
                    return false;
                }
               
                $this->lastact="mail from:<$from>". " ";
                if(!$this->do_command($this->lastact, "250"))
                {
                    fclose($this->fp);
                    return false;
                }
           
                $this->lastact="rcpt to:<$to>" . " ";
                if(!$this->do_command($this->lastact, "250"))
                {
                    fclose($this->fp);
                    return false;
                }

                $this->lastact="data ";         //发送正文
                if(!$this->do_command($this->lastact, "354"))
                {
                    fclose($this->fp);
                    return false;
                }

                $head="subject: $subject ";     //处理subject
                if(!empty($subject) && !ereg($head, $message))
                {
                    $message = $head.$message;
                }
           
               
                $head="from: $from ";           //处理from
                if(!empty($from) && !ereg($head, $message))
                {
                    $message = $head.$message;
                }

                $head="to: $to ";               //处理to
                if(!empty($to) && !ereg($head, $message))
                {
                    $message = $head.$message;
                }

                if(!ereg(" . ", $message))    //加上结束串
                    $message .= " . ";
                $this->show_debug($message, "out");
                fputs($this->fp, $message);
           
                $this->lastact="quit ";
                if(!$this->do_command($this->lastact, "250"))
                {
                    fclose($this->fp);
                    return false;
                }
            }
            return true;
        }
        else
        {
            $this->show_debug("connect failed!", "in");
            return false;
        }
    }
}