PHP邮件发送类——采用邮件专递方式,无需smtp服务器

本类参考了网上关于PHP的MIME MAIL和SMTP发送协议的文章,本类可以在*NUX或WIN平台下并且无需SMTP服务器,直接通过邮件专递方式送到邮件接收方的邮件服务器中。

    需要注意的是在发送大尺寸邮件时,建议在服务器允许MAIL()发送的情况下,尽量开启'usemail'=>true,因为用PHP的SOCKE方式发送效率相对于MAIL()函数来说要低;另外要说明的是由于采用邮件专递的方式邮件没有本地暂存发送,为了可靠性和避免长时间等待的过时问题,所以在没有启用PHP的MAIL函数时,本类没有添加支持用通过分号分隔的多帐号同时发送的功能。

    本类在nease.net的Linux+php5虚拟主机空间(该空间不能使用PHP自带的MAIL函数发邮件,写此类当时就是为了在这个空间下发送邮件)及win2003+IIS6+php4.3上测试成功。

简单范例:

require("mailer.class.php");
$mailer=new mailer();
$mailer->mConfig['mailform']="xxx@21cn.com";
$isended=$mailer->mail("nobody@example.com","the subject","hello","From: webmaster@example.com");
if($isended)
{
    echo "true";
}
else
{
    echo "false";
}

类文件: mailer.class.php

<?php
/**
* Project:     Dowebs.Lib: the PHP compiling template engine
* File:        mailer.lib.php
*
* This library is opensource software;
* @link http://www.dowebs.net/
* @copyright 2004-2005 dowebs.net studio.
* @author Xie Hengduo xiejuchen@21cn.com
* @package System
* @version 1.0.0.0
*/
class mailer{
    var $mConfig=array(
        'dns'    =>"202.96.104.16",                //设置解域MX记录的域名服务器
        'mailform'    =>"yourname@yourdomain.com",//发送邮件的帐号
        'charset'    =>"utf-8",                    //HTML附件编码
        'usemail'    =>false                        //是否使用PHP中的MAIL函数
    );
    var $dns_repl_domain="";
    var $arrMX    =array();
    var $error    ="";

    var $aattach    =array();
    var $xheaders    =array();
    var $ctencoding    = "7bit";
    var $priorities = array( '1 (Highest)', '2 (High)', '3 (Normal)', '4 (Low)', '5 (Lowest)' );
    var $content_type='';
    
    function mailer()
    {
        
    }
    
    //兼容的mail函数
    function mail($to,$subject,$message,$additional_headers='')
    {
        if($this->mConfig['usemail'])
        {
            return mail($to,$subject,$message,$additional_headers);
        }
        else
        {
            if($this->queryMailStmp($to))
            {
                $this->error="2 收件人邮箱地址非法";
                return false;
            }
            //连接服务器
            $is_sockopen=false;
            $hostname="";
            foreach($this->arrMX as $value)
            {
                if($fp = fsockopen ($value, 25, $errno, $errstr, 60))
                {
                    $hostname=$value;
                    $is_sockopen=true;
                    break;
                }
            }
            if (!$is_sockopen){$this->error="3 联接服务器失败";return false;}

            //HELO
            fputs($fp,"HELO {$hostname}\r\n");
            $lastmessage = fgets($fp,1024);
            if(substr($lastmessage,0,3) != 220 ){$this->error="4 错误信息$lastmessage";return false;}
            //FROM:
            fputs( $fp,"MAIL FROM:<{$this->mConfig['mailform']}>"."\r\n");
            $lastmessage = fgets ($fp,1024);
            if (substr($lastmessage,0,3) != 250){$this->error="5 错误信息$lastmessage";return false;}
            //TO:
            fputs( $fp,"RCPT TO:<$to>"."\r\n");
            $lastmessage = fgets ($fp,1024);
            if (substr($lastmessage,0,3) != 250){$this->error="6 错误信息$lastmessage";return false;}
            while(true){
                $lastmessage = fgets($fp,512);
                if((substr($lastmessage,3,1) != "-")||(empty($lastmessage)))break;
            }
            //DATA
            fputs($fp,"DATA\r\n");
            $lastmessage = fgets ($fp,1024);
            if (substr($lastmessage,0,3) != 354){$this->error="7 错误信息$lastmessage";return false;}
            $message="\n".$message;
            if($additional_headers!='')
            {
                $message = $additional_headers."\r\n".$message;
            }
            //处理To头
            $head="To: $to\r\n";
            $message = $head.$message;
            //处理Subject头
            $head="Subject: $subject\r\n";
            $message = $head.$message;
            //加上结束串
            $message .= "\r\n.\r\n";
            //发送信息
            fputs($fp, $message);
            fputs($fp,"QUIT\r\n");
            fclose($fp);
            return true;
        }
    }

    //邮址初步校验
    function is_valid_email ($email = "")
    {
        return preg_match('/^[.\w-]+@([\w-]+\.)+[a-zA-Z]{2,6}$/',$email);
    }

    function queryMailStmp($mailaddr)
    {
        if($this->is_valid_email($mailaddr))
        {
            $this->mxlookup(substr(strstr($mailaddr,'@'),1));
        }
        else
        {
            return false;
        }
    }
    //取得MX记录
    function mxlookup($domain)
    {
        if(function_exists('getmxrr'))
        {
            getmxrr($domain,$this->arrMX);
        }
        else
        {
            ##########################
            $dot_pos = 0; $temp = "";
            $QNAME="";
            while($dot_pos=strpos($domain,"."))
            {
                $temp   = substr($domain,0,$dot_pos);
                $domain = substr($domain,$dot_pos+1);
                $QNAME .= chr(strlen($temp)).$temp;
            }
            $QNAME .= chr(strlen($domain)).$domain.chr(0);
            ###########################
            $dns_packet = chr(0).chr(1).chr(1).chr(0).chr(0).chr(1).chr(0).chr(0).chr(0).chr(0).chr(0).chr(0).$QNAME.chr(0).chr(15).chr(0).chr(1);
            $dns_socket = fsockopen("udp://{$this->mConfig['dns']}", 53);
            fwrite($dns_socket,$dns_packet,strlen($dns_packet));
            $this->dns_reply = fread($dns_socket,1);
            $bytes = stream_get_meta_data($dns_socket);
            $this->dns_reply .= fread($dns_socket,$bytes['unread_bytes']);
            fclose($dns_socket);
            $this->cIx=6;
            $this->Total_Accounts="";
            for($i=0;$i<2;$i++){
                $this->Total_Accounts.=ord(substr($this->dns_reply,$this->cIx,1));
                $this->cIx++;
            }
            $this->cIx+=4;
            $this->parse_data($this->dns_repl_domain);
            $this->cIx+=7;
            for($ic=1;$ic<=$this->Total_Accounts;$ic++) {
                $QTYPE = ord($this->gdi($this->cIx));
                if($QTYPE!==15){
                    print("<font color='red' size='4' face='verdana'><B>[No MX Records returned]</b></font>");
                    die();
                }
                $this->cIx+=9;
                $mxPref = ord($this->gdi($this->cIx));
                $this->parse_data($curmx);
                $this->arrMX[] =$curmx;
                $this->cIx+=3;
            }
        }
    }
    function gdi(&$cIx,$bytes=1) {
        $this->cIx++;
        return(substr($this->dns_reply, $this->cIx-1, $bytes));
    }
    function parse_data(&$retval) {
        $arName = array();
        $byte = ord($this->gdi($this->cIx));
        while($byte!==0) {
            if($byte==192) { //compressed   
                $tmpIx = $this->cIx;
                $this->cIx = ord($this->gdi($cIx));
                $tmpName = $retval;
                $this->parse_data($tmpName);
                $retval = $retval.".".$tmpName;
                $this->cIx = $tmpIx+1;
                return;
            }
            $retval="";
            $bCount = $byte;
            for($b=0;$b<$bCount;$b++) {
                $retval .= $this->gdi($this->cIx);
            }
            $arName[]=$retval;
            $byte = ord($this->gdi($this->cIx));
        }
        $retval=join(".",$arName);
    }
    
    ############################################
    # MIME MAIL CODE
    ############################################
    function From( $from="")
    {
        if($from=='')
        {
            $this->xheaders['From']=$this->mConfig['mailform'];
        }
        else
        {
            $this->xheaders['From'] = $from;
        }
    }

    function mimemail($to,$subject,$message)
    {
        $this->boundary= "--" . md5( uniqid("myboundary") );
        if( $this->mConfig['charset'] != "us-ascii" )
        {
            $this->ctencoding = "8bit";
        }
        $headers = "";
        if( $this->mConfig['charset'] != "") {
            //global $contenttype;
            $this->xheaders["Mime-Version"] = "1.0";
            $this->xheaders["Content-Type"] = "{$this->content_type}; charset={$this->mConfig['charset']}";
            $this->xheaders["Content-Transfer-Encoding"] = $this->ctencoding;
        }
        $this->xheaders["X-Mailer"] = "Dowebs.net Mailer";
        if( count( $this->aattach ) > 0 )
        {
            $this->xheaders["Content-Type"] = "multipart/mixed;\n boundary=\"{$this->boundary}\"";
            $fullBody="This is a multi-part message in MIME format.\n--{$this->boundary}\n";
            $fullBody.= "Content-Type: text/html; charset={$this->mConfig['charset']}\nContent-Transfer-Encoding:{$this->ctencoding}\n\n".message."\n";
            $sep= chr(13) . chr(10);
            $ata= array();
            $k=0;
            for( $i=0; $i < count( $this->aattach); $i++ ) {
                $filename = $this->aattach[$i];
                $basename = basename($filename);
                $ctype = $this->actype[$i];        // content-type
                $disposition = $this->adispo[$i];
                if(!file_exists( $filename)){$this->error="1 Class Mail, method attach : file {$filename} can't be found";return false;}
                $subhdr= "--{$this->boundary}\nContent-Type: {$ctype};\n name=\"{$basename}\";\nContent-Transfer-Encoding: base64\nContent-Disposition: {$disposition};\n filename=\"{$basename}\"\n";
                $ata[$k++] = $subhdr;
                $linesz= filesize( $filename)+1;
                $fp= fopen( $filename, 'r' );
                $ata[$k++] = chunk_split(base64_encode(fread( $fp, $linesz)));
                fclose($fp);
            }
            $fullBody .= implode($sep, $ata);
        }
        else
        {
            $fullBody = $message;
        }
        reset($this->xheaders);
        while( list( $hdr,$value ) = each( $this->xheaders)) {
            $headers .= "$hdr: $value\n";
        }
        
        return $this->mail($to,$subject,$fullBody,$headers);
    }
    function Attach($filename,$filetype = "",$disposition = "inline")
    {
            if( $filetype == "" )
            {
                $filetype = "application/x-unknown-content-type";
            }
            $this->aattach[] = $filename;
            $this->actype[] = $filetype;
            $this->adispo[] = $disposition;
    }

    function Content_type($contenttype)
    {
        $this->content_type=$contenttype;
    }
    
    function Priority($priority)
    {
        if(!intval($priority))return false;
        if(!isset($this->priorities[$priority-1]))return false;
        $this->xheaders["X-Priority"] = $this->priorities[$priority-1];
        return true;
    }


}
?>

php在UTF-8下的中文字符截断处理

1、计算长度
function utf_strlen($str) {
$i = 0;
$count = 0;
$len = strlen ($str);
while ($i < $len) {
   $chr = ord ($str[$i]);
   $count++;
   $i++;
   if($i >= $len) break;
   if($chr & 0x80) {
    $chr <<= 1;
    while ($chr & 0x80) {
    $i++;
    $chr <<= 1;
    }
   }
}
return $count;
}
2、截断处理
function utf_substr($str,$len){
    for($i=0;$i<$len;$i++)
    {
        $temp_str=substr($str,0,1);
        if(ord($temp_str) > 127){
            $i++;
        if($i<$len)    {
            $new_str[]=substr($str,0,3);
            $str=substr($str,3);
            }
        }
    else {
        $new_str[]=substr($str,0,1);
        $str=substr($str,1);
        }
    }
    return join($new_str);
}

标签: php, substr, chr, i++, len