高分请教PHP使用smtp发送邮件的问题...

因为你的源程序真是太乱了。我没有太认真看，但是我看好像是因为没有清完全读出缓冲中内容的原因。这里有一个贴子，可能对你有用：http://www.csdn.net/expert/topic/743/743248.xml?temp=.2916376
我也知道很乱，这是CSDN造成的,他将tab符号搞的太宽了我的代码与下面的差不多，并与一本"PHP高级开发技术与应用"中的代码差不多。
http://pythonrecord.51.net/bin/content.php3?src=1&url=doc2000082201
http://pythonrecord.51.net/bin/content.php3?src=1&url=doc2001030101我再贴一次代码:
sendmail.php
<?php
if (!defined('SENDMAIL_CLASS_DEFINED'))
{
 define('SENDMAIL_CLASS_DEFINED', 1 );
 class sendmail
 {
 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 $smtp; //smtp服务器
 var $smtp_username;//用户名
 var $smtp_password;//用户密码
 var $port; //smtp端口号
 var $fp; //socket句柄
 var $from; //发送者 var $debug; //是否显示调试信息
 var $isSendHtml;//是否发送HTML邮件
 // 构造类
 function sendmail()
 {
 //使用smtp.21cn.com发送邮件
 $this->welcome="Free";
 $this->smtp="smtp.21cn.com";
 $this->smtp_username="xxxxx";
 $this->smtp_password="xxxxx";
 $this->from="[email protected]"; $this->debug=false;
 $this->isSendHtml=true;
 $this->lastmessage="";
 $this->lastact="";
 $this->port="25";
 }
 function setShowDebug($debug=false)
 {
 $this->debug=$debug;
 }
 function setSendHtml($isSendHtml=false)
 {
 $this->isSendHtml=$isSendHtml;
 }
 function show_debug($message, $inout)
 {
 if ($this->debug)
 {
 if($inout=="in") //响应信息
 {
 $m='<< ';
 }
 else
 $m='>> ';
 if(!ereg("\n$", $message))
 $message .= " ";
 $message=nl2br($message);
 echo "${m}${message}";
 }
 }
 function do_command($command, $code)
 {
 $this->lastact=$command;
 $this->show_debug($this->lastact, "out");
 fputs ( $this->fp, $this->lastact );
 while(true)
 {
 $this->lastmessage = fgets ( $this->fp, 512 );
 $this->show_debug($this->lastmessage, "in");
 if(($this->lastmessage[3]==' ') or (empty($this->lastmessage)))
 break;
 }
 if(!ereg("^$code", $this->lastmessage))
 return false;
 else
 return true;
 }
 function send($to,$subject,$message)
 {
 $intPos=0;
 $addressArray=split(",",$to);
 for($i=0;$i<count($addressArray);$i++)
 {
 if($this->checkEmail($addressArray[$i])==true)
 {
 $addressTo[$intPos]=$addressArray[$i];
 $intPos++;
 }
 }
 if($intPos<1)
 {
 $this->show_debug("收件人邮件地址无效！", "in");
 return false;
 }
 $to="";
 //$toEmail="";
 for($i=0;$i<count($addressTo);$i++)
 {
 $to.=$addressTo[$i].",";
 }
 $to=substr($to,0,Strlen($to)-1);
 $from=$this->from;
 if (!eregi("^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*$",$from))
 {
 $this->show_debug("发件人地址无效！", "in");
 return false;
 }
 $this->lastact="connect";
 $this->show_debug("Connect to SMTP server : ".$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", $this->lastmessage ) )
 {
 return false;
 }
 else
 {
 //是否需要身份验证
 if((trim($this->smtp_username)=="") || (trim($this->smtp_password)==""))
 {
 $this->lastact="HELO " . $this->welcome . "\n"; if(!$this->do_command($this->lastact, "250"))
 {
 fclose($this->fp);
 return false;
 }
 }
 else
 {
 $this->lastact="EHLO " . $this->welcome . "\n";
 if(!$this->do_command($this->lastact, "250"))
 {
 fclose($this->fp);
 return false;
 }

 $this->lastact="AUTH LOGIN" . "\n";
 if(!$this->do_command($this->lastact, "334"))
 {
 fclose($this->fp);
 return false;
 }
 //回传用户名，用base64编码
 $this->lastact=base64_encode($this->smtp_username) . "\n";
 if(!$this->do_command($this->lastact, "334"))
 {
 fclose($this->fp);
 return false;
 }
 //回传口令，用base64编码
 $this->lastact=base64_encode($this->smtp_password) . "\n";
 if(!$this->do_command($this->lastact, "235"))
 {
 fclose($this->fp);
 return false;
 }
 $this->show_debug("认证成功可以发送邮件了\n", "out");
 }
 $this->lastact="MAIL FROM: ".$from . "\n";
 if(!$this->do_command($this->lastact, "250"))
 {
 fclose($this->fp);
 return false;
 }
 for($i=0;$i<count($addressTo);$i++)
 {
 $toEmail="<".$addressTo[$i].">";
 $this->lastact="RCPT TO: $toEmail\n";
 if(!$this->do_command($this->lastact, "250"))
 {
 fclose($this->fp);
 return false;
 }
 }
 //发送正文
 $this->lastact="DATA\n";
 if(!$this->do_command($this->lastact, "354"))
 {
 fclose($this->fp);
 return false;
 }
 //处理Subject头
 $head="Subject: $subject\n";
 if(!empty($subject) && !ereg($head, $message))
 {
 $message = $head.$message;
 }
 //处理邮件格式(文本或HTML)
 if($this->isSendHtml)
 $head="Content-Type: text/html; charset=gb2312\n";
 else
 $head="Content-type: text/plan; charset=gb2312\n";
 $message = $head.$message;
 //处理From头
 $head="From: $from\n";
 if(!empty($from) && !ereg($head, $message))
 {
 $message = $head.$message;
 }
 //处理To头
 $head="To: $to\n";
 if(!empty($to) && !ereg($head, $message))
 {
 $message = $head.$message;
 }
 //加上结束串
 if(!ereg("\n\.\n", $message))
 $message .= "\n.\n";
 $this->show_debug($message, "out");
 fputs($this->fp, $message);
 $this->lastact="QUIT\n";
 if(!$this->do_command($this->lastact, "250"))
 {
 fclose($this->fp);
 return false;
 }
 }
 return true;
 }
 else
 {
 $this->show_debug("Connect failed!", "in");
 return false;
 }
 }
 function checkEmail($inAddress)
 {
 if (!eregi("^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*$",$inAddress))
 {
 return false;
 }
 else
 return true;
 }
 }
}
?>test.php
<?
include "sendmail.php";
$message="Hello! This is a test! GO GO";
$sendmail=new sendmail();
$sendmail->setShowDebug(true);//是否调试
//$to,$subject,$message
if($sendmail->send("[email protected]", "test chinese", $message))
 echo "发送成功！ ";
else
 echo "发送失败！ ";
?>

调试易

高分请教PHP使用smtp发送邮件的问题...

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