发一个用PHP5写的smtp邮件发送类，支持smtp身份验证，可同时给多人发信，同时支持抄送、暗送、附件等，喜欢的朋友帮我顶起来。这个类需要Fileinfo扩展的支持，有关Fileinfo扩展的更多信息请查看http://www.phpx.com/viewarticle.php?id=115888。
类文件如下：
<?
/*+--------------------------------------------------+
|文 件 名:Smtp.php |
|创 建 人:Simon.Ye |
|创建时间:2006-10-08 |
|说 明:smtp邮件发送类 |
+--------------------------------------------------+*/
class smtp
{
//相关属性定义
private $_host; //smtp服务器地址
private $_auth; //是否需要身份验证
private $_user; //smtp帐号
private $_pass; //smtp密码
private $_debug = false; //是否显示调试信息
private $_magicFile; //mime文件所在路径
private $_Subject; //邮件主题
private $_From; //发送人邮箱地址
private $_To = array(); //收件人
private $_Cc = array(); //抄送
private $_Bcc = array(); //暗送
private $_attachment = array(); //附件
private $_mailtype = 'text'; //邮件类型('text':纯文本,'html':HTML邮件)
private $_charset = 'gb2312'; //邮件编码
private $_mimemail; //邮件内容
private $_socket; //smtp连接
private $_port = 25; //smtp端口
private $_timeout = 30; //超时时间
//构造函数
public function __construct($host, $auth = false, $user = '', $pass = '')
{
$this->_host = $host;
$this->_auth = $auth;
$this->_user = $user;
$this->_pass = $pass;
}
//设置是否显示调试信息
public function setDebug($boolDebug)
{
$this->_debug = $boolDebug;
}
//设置mime文件所在路径
public function setMagicFile($filename)
{
$this->_magicFile = $filename;
}
//设置邮件主题
public function setSubject($str)
{
$this->_Subject = $str;
}
//设置发件人
public function setFrom($email)
{
$email = $this->stripComment($email);
$this->_From = $email;
}
//添加收件人
public function addTo($email)
{
$email = $this->stripComment($email);
$this->_To[] = $email;
}
//添加抄送人
public function addCc($email)
{
$email = $this->stripComment($email);
$this->_Cc[] = $email;
}
//添加暗送人
public function addBcc($email)
{
$email = $this->stripComment($email);
$this->_Bcc[] = $email;
}
//添加附件
public function addAttachment($filename)
{
if(is_file($filename)) $this->_attachment[] = $filename;
}
//设置邮件类型
public function setMailType($type)
{
$this->_mailtype = $type;
}
//设置邮件编码
public function setCharset($strCharset)
{
$this->_charset = $strCharset;
}
//设置邮件内容
public function setMimeMail($str)
{
$boundary = uniqid('');
$this->_mimemail = "From: " . $this->_From . "/r/n";
$this->_mimemail .= "Reply-To: " . $this->_From . "/r/n";
$this->_mimemail .= "To: " . implode(",", $this->_To) . "/r/n";
if(count($this->_Cc)) $this->_mimemail .= "Cc: " . implode(",", $this->_Cc) . "/r/n";
if(count($this->_Bcc)) $this->_mimemail .= "Bcc: " . implode(",", $this->_Bcc) . "/r/n";
$this->_mimemail .= "Subject: " . $this->_Subject . "/r/n";
$this->_mimemail .= "Message-ID: <" . time() . "." . $this->_From . ">/r/n";
$this->_mimemail .= "Date: " . date("r") . "/r/n";
$this->_mimemail .= "MIME-Version: 1.0/r/n";
$this->_mimemail .= "Content-type: multipart/mixed; boundary=/"" . $boundary . "/"/r/n/r/n";
$this->_mimemail .= "--" . $boundary . "/r/n";
if($this->_mailtype == 'text')
{
$this->_mimemail .= "Content-type: text/plain; charset=/"" . $this->_charset . "/"/r/n/r/n";
}
else if($this->_mailtype == 'html')
{
$this->_mimemail .= "Content-type: text/html; charset=/"" . $this->_charset . "/"/r/n/r/n";
}
$this->_mimemail .= $str . "/r/n/r/n";
if(count($this->_attachment))
{
$finfo = new finfo(FILEINFO_MIME, $this->_magicFile);
foreach($this->_attachment as $k => $filename)
{
$f = @fopen($filename, 'r');
if(!$f) continue;
$mimetype = $finfo->file(realpath($filename));
$attachment = @fread($f, filesize($filename));
$attachment = base64_encode($attachment);
$attachment = chunk_split($attachment);
$this->_mimemail .= "--" . $boundary . "/r/n";
$this->_mimemail .= "Content-type: " . $mimetype . "; name=" . basename($filename) . "/r/n";
$this->_mimemail .= "Content-disposition: attachment; filename=" . basename($filename) . "/r/n";
$this->_mimemail .= "Content-transfer-encoding: base64/r/n/r/n";
$this->_mimemail .= $attachment . "/r/n/r/n";
unset($f);
unset($mimetype);
unset($attachment);
}
}
$this->_mimemail .= "--" . $boundary . "--";
}
public function send()
{
$arrToEmail = $this->_To;
if(count($this->_Cc)) $arrToEmail = array_merge($arrToEmail, $this->_Cc);
if(count($this->_Bcc)) $arrToEmail = array_merge($arrToEmail, $this->_Bcc);
$this->connect();
$this->sendCMD('HELO localhost');
$this->smtpOK();
if($this->_auth)
{
$this->sendCMD('AUTH LOGIN ' . base64_encode($this->_user));
$this->smtpOK();
$this->sendCMD(base64_encode($this->_pass));
$this->smtpOK();
}
$this->sendCMD('MAIL FROM:<' . $this->_From . '>');
$this->smtpOK();
foreach($arrToEmail as $k => $toEmail)
{
$this->sendCMD('RCPT TO:<' . $toEmail . '>');
$this->smtpOK();
}
$this->sendCMD('DATA');
$this->smtpOK();
$this->sendCMD($this->_mimemail);
$this->smtpOK();
$this->sendCMD('.');
$this->smtpOK();
$this->disconnect();
}
//连接smtp服务器
private function connect()
{
$fp = @fsockopen($this->_host, $this->_port, $errno, $errstr, $this->_timeout);
if(!$fp)
{
if($this->_debug) $this->showMessage('错误:无法与smtp服务器建立连接！');
die();
}
else
{
$this->_socket = $fp;
if($this->_debug) $this->showMessage('正在与smtp服务器建立连接...成功！');
}
}
//关闭smtp服务器连接
private function disconnect()
{
$this->sendCMD('QUIT');
@fclose($this->_socket);
$this->_socket = null;
if($this->_debug) $this->showMessage('断开与smtp服务器的连接');
}
//显示信息
private function showMessage($msg)
{
echo "[" . date("H:i") . "]" . $msg . "<br/>";
}
//发送指令
private function sendCMD($cmd)
{
@fputs($this->_socket, $cmd . "/r/n");
if($this->_debug) $this->showMessage($cmd);
}
//判断指令是否成功
private function smtpOK()
{
$res = str_replace("/r/n", "", @fgets($this->_socket, 512));
if(ereg("^[23]", $res))
{
if($this->_debug) $this->showMessage('请求成功！');
}
else
{
if($this->_debug) $this->showMessage('错误:服务器返回信息<' . $res . '>');
$this->disconnect();
}
}
//过滤邮箱地址中的非法字符
private function stripComment($email)
{
$comment = "/([^()]*/)";
while(ereg($comment, $email))
{
$email = ereg_replace($comment, "", $email);
}
$email = ereg_replace("([ /t/r/n])+", "", $email);
$email = ereg_replace("^.*<(.+)>.*$", "/1", $email);
return $email;
}
}
?>