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[PHP] MIME邮件协议的multipart类型

2019年04月17日 07:17  | 萬仟网IT编程  | 我要评论

邮件协议中的三种情况,对应下面的三种类型

multipart/mixed可以包含附件。
multipart/related可以包含内嵌资源。
multipart/alternative 纯文本与超文本共存

1.纯文本的,只需要一块content-type块,不需要multipart块

date: tue, 16 apr 2019 17:35:19 +0800
received: from shihan2@sopans.com([]) by  via http;
 tue, 16 apr 2019 17:35:19 +0800 (cst)
reply-to: shihan2@sopans.com
from: <shihan2@sopans.com>
to: shihan2@sopans.com
subject: =?gbk?b?ztlatlliytq=?=
mime-version: 1.0
x-priority: 3
x-messageid: 1555407319.5028.10108
x-originating-ip: []
x-mailer: sina webmail 4.0
x-sina-mid: 044d8eb6f6ef3f6fae1a32d8b0930f609000000000000002
content-type: text/plain; charset=gbk
content-transfer-encoding: base64

agvsbg8=

2.内容是html的要加两块content-type块内容,一块是html一块是纯文本,并且要增加一块multipart类型块

date: tue, 16 apr 2019 17:36:41 +0800
received: from shihan2@sopans.com([]) by  via http;
 tue, 16 apr 2019 17:36:41 +0800 (cst)
reply-to: shihan2@sopans.com
from: <shihan2@sopans.com>
to: shihan2@sopans.com
subject: =?gbk?b?ztlatlliytq=?=
mime-version: 1.0
x-priority: 3
x-messageid: 1555407401.2205.10152
x-originating-ip: []
x-mailer: sina webmail 4.0
x-sina-mid: 044d8eb6f6ef3f6fae1a32d8b0930f609000000000000002
content-type: multipart/alternative;
         boundary="=-sinamail_alt_849bb6f96e7dc06cb99a08e3f9c84179"

--=-sinamail_alt_849bb6f96e7dc06cb99a08e3f9c84179
content-type: text/plain;
        charset=gbk
content-transfer-encoding: base64
content-disposition: inline

agvsbg8=


--=-sinamail_alt_849bb6f96e7dc06cb99a08e3f9c84179
content-type: text/html;
        charset=gbk
content-transfer-encoding: base64
content-disposition: inline

pggxpmhlbgxvpc9omt4=


--=-sinamail_alt_849bb6f96e7dc06cb99a08e3f9c84179--

3.有附件的话,还会增加下面两种multipart类型

date: tue, 16 apr 2019 17:38:47 +0800
received: from shihan2@sopans.com([]) by  via http;
 tue, 16 apr 2019 17:38:47 +0800 (cst)
reply-to: shihan2@sopans.com
from: <shihan2@sopans.com>
to: shihan2@sopans.com
subject: =?gbk?b?ztlatlliytq=?=
mime-version: 1.0
x-priority: 3
x-messageid: 1555407527.4947.4232
x-originating-ip: []
x-mailer: sina webmail 4.0
x-sina-mid: 044d8eb6f6ef3f6fae1a32d8b0930f609000000000000002
content-type: multipart/mixed;
         boundary="=-sinamail_mix_fe895d50cd0d0669bb8a7eb8c697db19"

--=-sinamail_mix_fe895d50cd0d0669bb8a7eb8c697db19
content-type: multipart/alternative;
         boundary="=-sinamail_alt_f50efff67f5369967ea1a6c77020a1e7"

--=-sinamail_alt_f50efff67f5369967ea1a6c77020a1e7
content-type: text/plain;
        charset=gbk
content-transfer-encoding: base64
content-disposition: inline

agvsbg8=


--=-sinamail_alt_f50efff67f5369967ea1a6c77020a1e7
content-type: text/html; charset=gbk
content-transfer-encoding: base64
content-disposition: inline

pggxpmhlbgxvpc9omt4=


--=-sinamail_alt_f50efff67f5369967ea1a6c77020a1e7--

--=-sinamail_mix_fe895d50cd0d0669bb8a7eb8c697db19
content-type: application/octet-stream; name="=?gbk?b?ms5sb2c=?="
content-disposition: attachment; filename="=?gbk?b?ms5sb2c=?="
content-transfer-encoding: base64

mxwyntaguelqruxjtklorw0k


--=-sinamail_mix_fe895d50cd0d0669bb8a7eb8c697db19--

下面的代码是php组合mime邮件协议的类库

<?php
/**
 * rfc 822: cr lf
 * character "cr":hex value 0d
 * character "lf":hex value 0a
 * @var string
 */
define("crlf", "\r\n");

/**
 * rfc 2822: 2.1.1. line length limits
 * @var int
 */
define("mime_line_length_limit", 76);

class mimemail
{

    /**
     * the charset of the email
     * @var string
     */
    var $_mail_charset = 'gbk';
    var $_mail_text_charset = 'gbk';
    /**
     * the subject of the email
     * @var string
     */
    var $_mail_subject = '';
    /**
     * the from address including display-name of the email
     * @var string
     */
    var $_mail_from = '';
    /**
     * just keep the address of from
     *
     * @var string
     */
    var $_mail_from_addr = '';
    /**
     * the sender address  of the email
     * @var string
     */
    var $_mail_sender = '';
    /**
     * the to address list of the email
     * @var string
     */
    var $_mail_to = '';
    /**
     * the cc address list of the email
     * @var string
     */
    var $_mail_cc = '';
    /**
     * the bcc address list of the email
     * @var string
     */
    var $_mail_bcc = '';
    /**
     * the priority of the email
     * @var int, default 3
     */
    var $_mail_priority = 3;
    /**
     * need notification or not
     * @var string
     */
    var $_mail_needreply = false;
    /**
     * 回复地址
     * @var <string>
     */
    var $_mail_replyto = '';
    /**
     * notification address of the email
     * @var string
     */
    var $_mail_notificationto = '';
    /**
     * message id
     * @var string
     */
    var $_mail_messageid = '';
    /**
     * the text body of the email
     * @var string
     */
    var $_mail_textbody = '';
    /**
     * the html body of the email
     * @var string
     */
    var $_mail_htmlbody = '';
    var $_mail_bodytype = '';
    /**
     * the default body content-type
     * @var string
     */
    var $_mail_type = '';
    /**
     * the header of the email
     * @var string
     */
    var $_mail_header = '';
    /**
     * the body of the email
     * @var string
     */
    var $_mail_body = '';
    /**
     * 	附件信息数组(附件所在路径、附件名称、附件类型)
     */
    var $aattachments = array();
    /**
     * the encode attachments of the email
     * @var array
     */
    var $_mail_subpart_attachments = array();
    /**
     * the attachments  index of the email
     * @var array
     */
    var $_mail_attachments_index = 0;
    /**
     * count of embedded attachments
     * @var int
     */
    var $_mail_embedded_count = 0;
    /**
     * the boundary for 'multipart/mixed' type
     * @var string
     */
    var $_mail_boundary_mix = '';
    /**
     * the boundary for 'multipart/related'type
     * @var string
     */
    var $_mail_boundary_rel = '';
    /**
     * the boundary for 'multipart/alternative' type
     * @var array
     */
    var $_mail_boundary_alt = '';
    /**
     * 用户自定义邮件头
     *
     * @var array
     */
    var $_mail_userheaders = array();
    var $mime_types = array(
        'gif' => 'image/gif',
        'jpg' => 'image/jpeg',
        'jpeg' => 'image/jpeg',
        'jpe' => 'image/jpeg',
        'bmp' => 'image/bmp',
        'png' => 'image/png',
        'tif' => 'image/tiff',
        'tiff' => 'image/tiff',
        'swf' => 'application/x-shockwave-flash',
        'doc' => 'application/msword',
        'xls' => 'application/vnd.ms-excel',
        'ppt' => 'application/vnd.ms-powerpoint',
        'pdf' => 'application/pdf',
        'ps' => 'application/postscript',
        'eps' => 'application/postscript',
        'rtf' => 'application/rtf',
        'bz2' => 'application/x-bzip2',
        'gz' => 'application/x-gzip',
        'tgz' => 'application/x-gzip',
        'tar' => 'application/x-tar',
        'zip' => 'application/zip',
        'html' => 'text/html',
        'htm' => 'text/html',
        'txt' => 'text/plain',
        'css' => 'text/css',
        'js' => 'text/javascript',
        'eml' => 'message/rfc822'
    );

    var $_mail_clientip = '';

    /**
     * mimemail 构造函数
     *
     */
    function mimemail()
    {
        $this->_mail_messageid = sprintf('%s.%s', microtime(true), getmypid());
        $this->_mail_boundary_mix = "=-sinamail_mix_" . md5(uniqid(rand(), true));
        $this->_mail_boundary_rel = "=-sinamail_rel_" . md5(uniqid(rand(), true));
        $this->_mail_boundary_alt = "=-sinamail_alt_" . md5(uniqid(rand(), true));
        //$this->_mail_sended_index = 0 ;
    }

    /**
     * get message id
     *
     * @return string
     */
    function getmessageid()
    {
        return $this->_mail_messageid;
    }

    function convenc($s, $charset = 'gbk')
    {
        if ($charset == 'utf-8') {
            return array($s, 'utf-8');
        }

        if ($charset == 'gbk' && preg_match('/[^\x00-\x7f\x{3000}-\x{303f}\x{4e00}-\x{9fff}\x{ff00}-\x{ffef}]/u', $s)) {
            return array($s, 'utf-8');
        }

        $es = mb_convert_encoding($s, $charset, 'utf-8');
        if ($es === false) {
            return array($s, 'utf-8');
        } else {
            return array($es, $charset);
        }
    }

    function getclientip()
    {
        if (!$this->_mail_clientip) {
            $ip = isset($_server['http_x_forwarded_for']) ? $_server['http_x_forwarded_for'] : '';
            if (!$ip) {
                $ip = isset($_server['remote_addr']) ? $_server['remote_addr'] : '';
            }

            $a = explode('|', str_replace(',', '|', $ip));
            $this->_mail_clientip = trim($a[0]);
        }
        return $this->_mail_clientip;
    }

    function setclientip($ip)
    {
        $this->_mail_clientip = $ip;
    }

    /**
     * 取得用户自定义邮件头
     *
     * @param string $name
     * @return mixed
     */
    function getuserheader($name = '')
    {
        if (!$name) {
            return $this->_mail_userheaders;
        }

        return (isset($this->_mail_userheaders[$name]) ? $this->_mail_userheaders[$name] : false);
    }

    /**
     * 设置用户自定义邮件头
     *
     * @param mixed $value
     * @param string $name
     */
    function setuserheader($value, $name = '')
    {
        $d = array();
        if ($name == '') {
            if (is_array($value)) {
                $d = $value;
            } else {
                return;
            }
        } else {
            $d[$name] = $value;
        }

        foreach ($d as $k => $v) {
            if (is_scalar($v)) {
                $this->_mail_userheaders[$k] = $v;
            }
        }
    }

    /**
     * 设置邮件主题
     * @param string $subject 邮件主题
     *
     */
    function setsubject($subject)
    {
        if (!is_null($subject)) {
            if (!$this->isbig($subject)) {
                $this->_mail_subject = $subject;
            } else {
                list($subject, $charset) = $this->convenc($subject);
                $this->_mail_subject
                        = '=?' . $charset . '?b?' . base64_encode($subject) . '?=';
            }
        }
    }

    /**
     * 设置真实发信地址
     *
     * @param string $sender
     */
    function setsender($sender)
    {
        $this->_mail_sender = $sender;
    }

    /**
     * 设置发件人
     * @param string $from 发件人邮件地址
     * 	@param string $nickname 发件人昵称
     *
     */
    function setfrom($from, $nickname = '')
    {
        $this->_mail_from_addr = $from;
        if ('' == $nickname) {
            $this->_mail_from = '<' . $from . '>';
        } else {
            if ($this->isbig($nickname)) {
                list($nickname, $charset) = $this->convenc($nickname);

                $this->_mail_from = sprintf("\"=?%s?b?%s?=\" <%s>", $charset, base64_encode($nickname), $from);
            } else {
                $this->_mail_from = '"' . $nickname . '" <' . $from . '>';
            }
        }
    }

    /**
     * 设置收件人邮件列表
     * @param string $to 收件人邮件地址
     *
     */
    function setto($mail_to)
    {
        if (!is_null($mail_to)) {
            list($mail_to, $charset) = $this->convenc($mail_to);
            $this->_mail_to = $this->_encodeaddr($mail_to, $charset);
        }
    }

    /**
     * 设置抄送邮件列表
     * @param string $mail_cc 抄送邮件地址列表
     *
     */
    function setcc($mail_cc)
    {
        if (!is_null($mail_cc)) {
            list($mail_cc, $charset) = $this->convenc($mail_cc);
            $this->_mail_cc = $this->_encodeaddr($mail_cc, $charset);
        }
    }

    /**
     * 设置密送邮件列表
     * @param string $mail_bcc 密送邮件地址列表
     *
     */
    function setbcc($mail_bcc)
    {
        if (!is_null($mail_bcc)) {
            list($mail_bcc, $charset) = $this->convenc($mail_bcc);
            $this->_mail_bcc = $this->_encodeaddr($mail_bcc, $charset);
        }
    }

    /**
     * 设置邮件正文类型
     * @param string $text_type 邮件正文类型
     *
     */
    function setbodytype($text_type)
    {
        if ($text_type == 'html')
            $this->_mail_bodytype = $text_type;
        else
            $this->_mail_bodytype = "plain";
    }

    /**
     * 设置邮件优先级别
     * @param string $priority 邮件优先级别
     *
     */
    function setpriority($priority = 3)
    {
        $priority = !is_null($priority) ? $priority : 3;
        $this->_mail_priority = $priority;
    }

    /**
     * 设置邮件优先级别
     * @param string $isneedreply 是否需要读信回执
     * @param string $addr_notificationto 回执邮件地址
     */
    function setnotificationto($isneedreply = false, $addr_notificationto = '')
    {
        if ($isneedreply == true) {
            $this->_mail_needreply = $isneedreply;

            if (empty($addr_notificationto))
                $this->_mail_notificationto = $this->_mail_sender;
            else
                $this->_mail_notificationto = $addr_notificationto;
        }
    }

    /**
     * 设置邮件回复信息
     * @param <string> $replyto
     */
    function setreplyto($replyto)
    {
        $this->_mail_replyto = $replyto;
    }

    /**
     * 添加文本格式正文
     * @param string $text 文本格式正文
     */
    function addtextbody($text)
    {
        list($text, $charset) = $this->convenc($text, $this->_mail_text_charset);
        if ($charset != $this->_mail_text_charset) {
            $this->_mail_textbody = mb_convert_encoding($this->_mail_textbody, $charset, $this->_mail_text_charset);
            $this->_mail_text_charset = $charset;
        }
        $this->_mail_textbody .= $text;
    }

    /**
     * 添加html格式正文
     * @param string $html html格式正文
     */
    function addhtmlbody($html)
    {
        list($html, $charset) = $this->convenc($html, $this->_mail_charset);
        if ($charset != $this->_mail_charset) {
            $this->_mail_htmlbody = mb_convert_encoding($this->_mail_htmlbody, $charset, $this->_mail_charset);
            $this->_mail_charset = $charset;
        }
        $this->_mail_htmlbody .= $html;
    }

    function & getsendmailtext($to = null)
    {
        $msg = '';
        if (!empty($this->_mail_userheaders['sina-sendseparate'])) {
            if ($to) {
                $header = str_replace('<{$_mail_to}>', $this->_splitaddrlist($to), $this->_mail_header);
            } else {
                $header = str_replace('<{$_mail_to}>', $this->_splitaddrlist($this->_mail_to), $this->_mail_header);
            }
            $msg = $header . crlf . crlf . $this->_mail_body;
        } else {
            $msg = $this->_mail_header . crlf . crlf . $this->_mail_body;
        }
        return $msg;
    }

    /*
     * 	生成邮件header
     * @param string $mailcontenttype 邮件content-type
     * 	@return string mailheader
     */

    function _buildheader($mailcontenttype)
    {
        //$this->_mail_header = 'return-path: ' . $this->_mail_sender . crlf;
        $this->_mail_header =
                'date: ' . date("d, d m y h:i:s") . " +0800 " . crlf;

        $this->_mail_header .=
                'received: from ' . $this->_mail_sender . '([' . $this->getclientip() . ']) by '
                . $_server['http_host'] . ' via http;' . crlf
                . ' ' . date("d, d m y h:i:s") . " +0800 (cst)" . crlf;

        $replyto = (!empty($this->_mail_replyto)) ? $this->_mail_replyto : $this->_mail_sender;
        $this->_mail_header .= 'reply-to: ' . $replyto . crlf;

        if (strcasecmp($this->_mail_sender, $this->_mail_from_addr) != 0) {
            $this->_mail_header .= 'sender: ' . $this->_mail_sender . crlf;
        }

        if (!is_null($this->_mail_from))
            $this->_mail_header .=
                    "from: " . $this->_splitaddrlist($this->_mail_from) . crlf;

        if (!empty($this->_mail_userheaders['sina-sendseparate'])) {
            $this->_mail_header .= 'to: <{$_mail_to}>' . crlf;
        } else {
            if (!is_null($this->_mail_to))
                $this->_mail_header .=
                        "to: " . $this->_splitaddrlist($this->_mail_to) . crlf;
        }

        if (!empty($this->_mail_cc))
            $this->_mail_header .=
                    "cc: " . $this->_splitaddrlist($this->_mail_cc) . crlf;

        if (!empty($this->_mail_bcc))
            $this->_mail_header .= "bcc: " . $this->_splitaddrlist($this->_mail_bcc) . crlf;

        if (!is_null($this->_mail_subject))
            $this->_mail_header .= "subject: " . $this->_mail_subject . crlf;

        $this->_mail_header .= "mime-version: 1.0" . crlf;
        $this->_mail_header .= "x-priority: " . $this->_mail_priority . crlf;

        if ($this->_mail_needreply == true)
            $this->_mail_header .=
                    "disposition-notification-to: " . $this->_mail_notificationto . crlf;

        $this->_mail_header .= 'x-messageid: ' . $this->_mail_messageid . crlf;

        $this->_mail_header .= 'x-originating-ip: [' . $_server["server_addr"] . "]" . crlf;
        $this->_mail_header .= "x-mailer: sina webmail 4.0" . crlf;

        foreach ($this->_mail_userheaders as $k => $v) {
            $hn = str_replace(' ', '-', ucwords(str_replace('-', ' ', $k)));
            $this->_mail_header .= "x-$hn: $v" . crlf;
        }

        $this->_mail_header .= $mailcontenttype;
    }

    /*
     * 	生成邮件体
     * 	@return bool 成功返回0,失败返回错误代码
     *
     */

    function buildbody()
    {

        /*
          $b_attachments 		= ($this->_mail_attachments	> 0 )			? true : false;
          $b_imgattachments = (count($this->attachments_img) > 0)	? true : false;
          $b_htmlbody       = !empty($this->_htmlbody)             ? true : false;
          $b_textbody       = (!$html and !empty($this->_txtbody)) ? true : false;
         */

        if (count($this->aattachments) > 0) {
            foreach ($this->aattachments as $a_attfile) {
                if (!$this->_getattachment($a_attfile['attfilepath'], $a_attfile['attname'], $a_attfile['atttype'], $a_attfile['attembedded'])) {
                    return false;
                }
            }
        }

        switch ($this->_parseelements()) {
            case 1:  //text/plain
                $this->_buildheader("content-type: text/plain; charset=$this->_mail_text_charset\ncontent-transfer-encoding: base64");
                $this->_mail_body = $this->_gettextmailbody();
                break;

            case 3:  //text/plain && text/html
                $this->_buildheader("content-type: multipart/alternative;\n\t boundary=\"$this->_mail_boundary_alt\"");
                $this->_mail_body = "--" . $this->_mail_boundary_alt . crlf;
                $this->_mail_body .=
                        "content-type: text/plain;\n\tcharset=$this->_mail_text_charset" . crlf;

                $this->_mail_body .= "content-transfer-encoding: base64" . crlf;
                $this->_mail_body .= "content-disposition: inline" . crlf . crlf;
                $this->_mail_body .= $this->_gettextmailbody() . crlf . crlf;
                $this->_mail_body .= "--" . $this->_mail_boundary_alt . crlf;

                $this->_mail_body .=
                        "content-type: text/html; \n\tcharset=$this->_mail_charset" . crlf;
                $this->_mail_body .= "content-transfer-encoding: base64" . crlf;
                $this->_mail_body .= "content-disposition: inline" . crlf . crlf;
                $this->_mail_body .= $this->_gethtmlmailbody() . crlf . crlf;
                $this->_mail_body .= "--" . $this->_mail_boundary_alt . "--" . crlf;
                break;

            case 5:  // text/plain && attachments
                $this->_buildheader("content-type: multipart/mixed;\n\t boundary=\"$this->_mail_boundary_mix\"");
                $this->_mail_body = "--" . $this->_mail_boundary_mix . crlf;
                $this->_mail_body .=
                        "content-type: text/plain;\n\tcharset=$this->_mail_text_charset" . crlf;
                $this->_mail_body .= "content-transfer-encoding: base64" . crlf;
                $this->_mail_body .= "content-disposition: inline" . crlf . crlf;
                $this->_mail_body .= $this->_gettextmailbody() . crlf . crlf;

                foreach ($this->_mail_subpart_attachments as $value) {
                    $this->_mail_body .= "--" . $this->_mail_boundary_mix . crlf;
                    $this->_mail_body .=
                            "content-type: " . $value['type'] . "; name=\"" . $value['name'] . "\"" . crlf;
                    $this->_mail_body .=
                            "content-disposition: attachment; filename=\"" . $value['name'] . "\"" . crlf;
                    if ($value['type'] == 'message/rfc822') {
                        $this->_mail_body .= "content-transfer-encoding: 8bit" . crlf . crlf;
                    } else {
                        $this->_mail_body .= "content-transfer-encoding: base64" . crlf . crlf;
                    }
                    $this->_mail_body .= $value['content'] . crlf . crlf;
                }

                $this->_mail_body .= "--" . $this->_mail_boundary_mix . "--" . crlf;
                break;

            case 7:  //text/plain && text/html && attachment
                $this->_buildheader("content-type: multipart/mixed;\n\t boundary=\"$this->_mail_boundary_mix\"");
                $this->_mail_body = "--" . $this->_mail_boundary_mix . crlf;
                $this->_mail_body .= "content-type: multipart/alternative;\n\t boundary=\"$this->_mail_boundary_alt\"" . crlf . crlf;
                $this->_mail_body .= "--" . $this->_mail_boundary_alt . crlf;
                $this->_mail_body .= "content-type: text/plain;\n\tcharset=$this->_mail_text_charset" . crlf;
                $this->_mail_body .= "content-transfer-encoding: base64" . crlf;
                $this->_mail_body .= "content-disposition: inline" . crlf . crlf;
                $this->_mail_body .= $this->_gettextmailbody() . crlf . crlf;
                $this->_mail_body .= "--" . $this->_mail_boundary_alt . crlf;

                $this->_mail_body .= "content-type: text/html; charset=$this->_mail_charset" . crlf;
                $this->_mail_body .= "content-transfer-encoding: base64" . crlf;
                $this->_mail_body .= "content-disposition: inline" . crlf . crlf;
                $this->_mail_body .= $this->_gethtmlmailbody() . crlf . crlf;
                $this->_mail_body .= "--" . $this->_mail_boundary_alt . "--" . crlf . crlf;

                foreach ($this->_mail_subpart_attachments as $value) {
                    $this->_mail_body .= "--" . $this->_mail_boundary_mix . crlf;
                    $this->_mail_body .= "content-type: " . $value['type'] . "; name=\"" . $value['name'] . "\"" . crlf;
                    $this->_mail_body .= "content-disposition: attachment; filename=\"" . $value['name'] . "\"" . crlf;
                    if ($value['type'] == 'message/rfc822') {
                        $this->_mail_body .= "content-transfer-encoding: 8bit" . crlf . crlf;
                    } else {
                        $this->_mail_body .= "content-transfer-encoding: base64" . crlf . crlf;
                    }
                    $this->_mail_body .= $value['content'] . crlf . crlf;
                }
                $this->_mail_body .= "--" . $this->_mail_boundary_mix . "--" . crlf;
                break;

            case 11:
                $this->_buildheader("content-type: multipart/related; type=\"multipart/alternative\";\n\t boundary=\"$this->_mail_boundary_rel\"");
                $this->_mail_body = "--" . $this->_mail_boundary_rel . crlf;
                $this->_mail_body .= "content-type: multipart/alternative;\n\t boundary=\"$this->_mail_boundary_alt\"" . crlf . crlf;
                $this->_mail_body .= "--" . $this->_mail_boundary_alt . crlf;
                $this->_mail_body .= "content-type: text/plain;\n\tcharset=$this->_mail_text_charset" . crlf;
                $this->_mail_body .= "content-transfer-encoding: base64" . crlf;
                $this->_mail_body .= "content-disposition: inline" . crlf . crlf;
                $this->_mail_body .= $this->_gettextmailbody() . crlf . crlf;
                $this->_mail_body .= "--" . $this->_mail_boundary_alt . crlf;

                $this->_mail_body .= "content-type: text/html; charset=$this->_mail_charset" . crlf;
                $this->_mail_body .= "content-transfer-encoding: base64" . crlf;
                $this->_mail_body .= "content-disposition: inline" . crlf . crlf;
                $this->_mail_body .= $this->_gethtmlmailbody() . crlf . crlf;
                $this->_mail_body .= "--" . $this->_mail_boundary_alt . "--" . crlf . crlf;

                foreach ($this->_mail_subpart_attachments as $value) {
                    if ($value['embedded']) {
                        $this->_mail_body .= "--" . $this->_mail_boundary_rel . crlf;
                        $this->_mail_body .= "content-id: <" . $value['embedded'] . ">" . crlf;
                        $this->_mail_body .= "content-type: " . $value['type'] . "; name=\"" . $value['name'] . "\"" . crlf;
                        $this->_mail_body .= "content-disposition: attachment; filename=\"" . $value['name'] . "\"" . crlf;
                        $this->_mail_body .= "content-transfer-encoding: base64" . crlf . crlf;
                        $this->_mail_body .= $value['content'] . crlf . crlf;
                    }
                }
                $this->_mail_body .= "--" . $this->_mail_boundary_rel . "--" . crlf;
                break;

            case 15:
                $this->_buildheader("content-type: multipart/mixed;\n\t boundary=\"$this->_mail_boundary_mix\"");
                $this->_mail_body .= "--" . $this->_mail_boundary_mix . crlf;

                $this->_mail_body .= "content-type: multipart/related; type=\"multipart/alternative\"; boundary=\"$this->_mail_boundary_rel\"" . crlf . crlf;
                $this->_mail_body .= "--" . $this->_mail_boundary_rel . crlf;

                $this->_mail_body .= "content-type: multipart/alternative;\n\t boundary=\"$this->_mail_boundary_alt\"" . crlf . crlf;
                $this->_mail_body .= "--" . $this->_mail_boundary_alt . crlf;

                $this->_mail_body .= "content-type: text/plain; charset=$this->_mail_text_charset" . crlf;
                $this->_mail_body .= "content-transfer-encoding: base64" . crlf;
                $this->_mail_body .= "content-disposition: inline" . crlf . crlf;
                $this->_mail_body .= $this->_gettextmailbody() . crlf . crlf;
                $this->_mail_body .= "--" . $this->_mail_boundary_alt . crlf;

                $this->_mail_body .= "content-type: text/html; charset=$this->_mail_charset" . crlf;
                $this->_mail_body .= "content-transfer-encoding: base64" . crlf;
                $this->_mail_body .= "content-disposition: inline" . crlf . crlf;
                $this->_mail_body .= $this->_gethtmlmailbody() . crlf . crlf;
                $this->_mail_body .= "--" . $this->_mail_boundary_alt . "--" . crlf . crlf;

                foreach ($this->_mail_subpart_attachments as $value) {
                    if ($value['embedded']) {
                        $this->_mail_body .= "--" . $this->_mail_boundary_rel . crlf;
                        $this->_mail_body .= "content-id: <" . $value['embedded'] . ">" . crlf;
                        $this->_mail_body .= "content-type: " . $value['type'] . "; name=\"" . $value['name'] . "\"" . crlf;
                        $this->_mail_body .= "content-disposition: attachment; filename=\"" . $value['name'] . "\"" . crlf;
                        $this->_mail_body .= "content-transfer-encoding: base64" . crlf . crlf;
                        $this->_mail_body .= $value['content'] . crlf . crlf;
                    }
                }
                $this->_mail_body .= "--" . $this->_mail_boundary_rel . "--" . crlf . crlf;

                foreach ($this->_mail_subpart_attachments as $value) {
                    if (!$value['embedded']) {
                        $this->_mail_body .= "--" . $this->_mail_boundary_mix . crlf;
                        $this->_mail_body .= "content-type: " . $value['type'] . "; name=\"" . $value['name'] . "\"" . crlf;
                        $this->_mail_body .= "content-disposition: attachment; filename=\"" . $value['name'] . "\"" . crlf;
                        //$this->_mail_body .= "content-transfer-encoding: base64" . crlf . crlf;
                        if ($value['type'] == 'message/rfc822') {
                            $this->_mail_body .= "content-transfer-encoding: 8bit" . crlf . crlf;
                        } else {
                            $this->_mail_body .= "content-transfer-encoding: base64" . crlf . crlf;
                        }
                        $this->_mail_body .= $value['content'] . crlf . crlf;
                    }
                }
                $this->_mail_body .= "--" . $this->_mail_boundary_mix . "--" . crlf;
                break;

            default:
                return false;
        }
        //$this->sended_index++;
        return true;
    }

    /*
     * 	分析content-type
     * @param string $mailcontenttype 邮件content-type
     * 	@return string mailheader
     */

    function _parseelements()
    {
        if ($this->_mail_bodytype == "html") {
            $this->_mail_type = 3;
            if (!empty($this->mail_html)) {
                if (empty($this->mail_text))
                    $this->mail_text = $this->htmltotext($this->mail_html);
            }
        }
        else
            $this->_mail_type = 1;

        if ($this->_mail_attachments_index != 0) {
            if ($this->_mail_type == 3 && $this->_mail_embedded_count > 0) {
                $this->_mail_type = $this->_mail_type + 8;
                if ((count($this->aattachments) - $this->_mail_embedded_count) >= 1) {
                    $this->_mail_type = $this->_mail_type + 4;
                }
            } else if (count($this->aattachments) > 0) {
                $this->_mail_type = $this->_mail_type + 4;
            }
        }
        return $this->_mail_type;
    }

    /**
     * 添加附件
     * @param string $attfile 附件文件绝对路径
     * @param string $attname 附件名称
     * @param string $attfiletype 附件文件类型
     * @param bool   $attembedded 附件是否为嵌入
     * 	@return 成功 0,失败 错误代码
     */
    function addattachment($sattfilepath, $sattname, $satttype='', $sattembedded = false)
    {
        if (is_null($sattfilepath)) {
            return;
        }

        $embedded = false;
        if ($sattembedded) {
            $this->_mail_embedded_count++;
            $embedded = sprintf('part%s.%s', $this->_mail_embedded_count, $this->_mail_messageid);
        }

        $this->aattachments[$this->_mail_attachments_index] = array(
            'attfilepath' => $sattfilepath,
            'attname' => $sattname,
            'atttype' => $satttype,
            'attembedded' => $embedded
        );
        $this->_mail_attachments_index++;
    }

    /**
     * 获取附件subpart信息
     * @param string $attfile 附件文件绝对路径
     * @param string $attname 附件名称
     * @param string $attfiletype 附件文件类型
     * @param int    $attembedded 附件嵌入id
     * 	@return 成功 0,失败 错误代码
     */
    function _getattachment($attfile, $attname, $attfiletype = "", $attembedded)
    {
        
        $content = file_get_contents($attfile);
        if ($content !== false) {
            list($attname, $charset) = $this->convenc($attname);
            $attfiletype = empty($attfiletype) ? $this->_getmimetype($attname) : $attfiletype;
            if ($attfiletype == 'message/rfc822') {
                $this->_mail_subpart_attachments[] = array(
                    'content' => $content,
                    'name' => '=?' . $charset . '?b?' . base64_encode($attname) . '?=',
                    'type' => $attfiletype,
                    'embedded' => false
                );
            } else {
                $this->_mail_subpart_attachments[] = array(
                    'content' => chunk_split(base64_encode($content), mime_line_length_limit, crlf),
                    'name' => '=?' . $charset . '?b?' . base64_encode($attname) . '?=',
                    'type' => $attfiletype,
                    'embedded' => $attembedded
                );
            }
            return true;
        } else {
            return false;
        }
    }

    /**
     * 	将文本格式正文按照rfc规范编码并拆分成行
     * 	@param	string
     */
    function _gettextmailbody()
    {
        if (isset($this->_mail_textbody) && !is_null($this->_mail_textbody))
            return chunk_split(
                    base64_encode($this->_mail_textbody), mime_line_length_limit, crlf);
        else
            return '';
    }

    /**
     * 将嵌入附件的标记替换为实际的content-id
     *
     * @param string $body
     * @return string
     */
    function _replaceembedded($body)
    {
        foreach ($this->aattachments as $att) {
            if (!$att['attembedded']) {
                continue;
            }

            $search = '__cid__' . md5($att['attfilepath']);
            $repl = 'cid:' . $att['attembedded'];
            $body = str_replace($search, $repl, $body);
        }
        return $body;
    }

    /**
     * 	将html格式正文按照rfc规范编码并拆分成行
     * 	@param	string
     */
    function _gethtmlmailbody()
    {
        if (isset($this->_mail_htmlbody) && !is_null($this->_mail_htmlbody)) {
            if ($this->_mail_embedded_count > 0) {
                $this->_mail_htmlbody = $this->_replaceembedded($this->_mail_htmlbody);
            }
            return chunk_split(
                    base64_encode($this->_mail_htmlbody), mime_line_length_limit, crlf);
        } else {
            return '';
        }
    }

    /**
     * private
     * 	获取附件类型
     * @param string $attname 附件名称
     */
    function _getmimetype($attname)
    {
        $ext_array = explode(".", $attname);
        if (($last = count($ext_array) - 1) != 0) {
            $ext = strtolower($ext_array[$last]);
            if (isset($this->mime_types[$ext]))
                return $this->mime_types[$ext];
        }
        return "application/octet-stream";
    }

    /**
     * 按照rfc规范将邮件地址列表拆分成行
     * 	@param string $inputaddr 邮件地址列表
     * @return string 规范后的邮件地址列表
     */
    function _splitaddrlist($inputaddr)
    {
        if (is_null($inputaddr) || mime_line_length_limit > strlen($inputaddr))
            return $inputaddr;
        else {
            $a_splitaddr = explode(",", $inputaddr);
            $curlen = 0;
            $outputaddr = '';
            foreach ($a_splitaddr as $key => $address) {
                $curlen += strlen($address);

                if (mime_line_length_limit < $curlen) {
                    $outputaddr .= crlf . ' ' . $address . ",";
                    $curlen = strlen($address);
                } else {
                    $outputaddr .= $address . ",";
                }
            }
            return $outputaddr;
        }
    }

    /**
     * encode addlist for mime header
     * @param string $addr_str 邮件地址列表
     *
     */
    function _encodeaddr($addr_str, $charset = 'gbk')
    {
        $addr_ret = '';

        $addr_str = mb_ereg_replace(mb_convert_encoding(',', $charset, 'utf-8'), ',', $addr_str, $charset);
        $addrs = $this->_splitaddressstr($addr_str);
        foreach ($addrs as $key => $addr) {
            $addr = trim($addr);
            if ($key != 0)
                $addr_ret .= ', ';

            if (preg_match('/(.*)<(.*)>$/', $addr, $addr_split)) {

                $addr_name = trim($addr_split[1]);
                $addr_name = trim($addr_name, '"');
                $addr_mail = trim($addr_split[2]);
                mb_internal_encoding($charset);

                if (!self::isbig($addr_name)) {
                    $addr_ret .= '"' . $addr_name . '" <' . $addr_mail . '>';
                } else {
                    $addr_ret .= '=?' . $charset . '?b?' . base64_encode($addr_name) . '?= <' . $addr_mail . '>';
                }
            }
            else
                $addr_ret .= $addr;
        }
        return $addr_ret;
    }

    function _splitaddressstr($s)
    {
        $ls = array();
        $inquote = false;
        $item = '';
        for ($i = 0, $n = strlen($s); $i < $n; ++$i) {
            $ch = $s[$i];
            if ($ch == '"') {
                if (!$inquote) {
                    $inquote = true;
                } else {
                    $inquote = false;
                }
            } elseif ($ch == ',' || $ch == ';') {
                if (!$inquote) {
                    if (isset($item[0])) {
                        array_push($ls, $item);
                        $item = '';
                    }
                } else {
                    $item .= $ch;
                }
            } else {
                $item .= $ch;
            }
        }

        if (isset($item[0])) {
            array_push($ls, $item);
        }

        return $ls;
    }

    /**
     * 将html格式转换为text
     * @param string $html
     * 	@return string 转换后text字符串
     */
    function htmltotext($html)
    {
        if (!strlen($html))
            return '';

        $search = array("'<br[^>]*?>'si");
        $replace = array("\n");
        $txt = preg_replace($search, $replace, $html);

        $txt = strip_tags($txt);
        return htmlspecialchars_decode($txt);
    }

    /**
     * 检查是否是大字符集
     *
     * @param string type $string
     * @return boolean
     */
    function isbig($string)
    {
        for ($i = 0; $i < strlen($string); $i++) {
            if (ord($string[$i]) > 127) {
                return true;
            }
        }
        return false;
    }

}
$html='<h1>hello</h1>';
$text=strip_tags($html);

$mime=new mimemail();
//增加一个邮件头
$mime->setuserheader('044d8eb6f6ef3f6fae1a32d8b0930f609000000000000002', 'sina-mid');
$mime->setsender("shihan2@sopans.com");
$mime->setfrom("shihan2@sopans.com");
$mime->setto("shihan2@sopans.com");
$mime->setsubject("我来测试");
$mime->setbodytype('html');

$mime->addhtmlbody($html);
$mime->addtextbody($text);
$mime->addattachment("d:/phpserver/www/test/1.log","1.log","");

$mime->buildbody();
$mail=$mime->getsendmailtext();

echo $mail;
//file_put_contents("2.eml",$mail);

  

  

  

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