/********************************************
函数: getContentType($inFileName)用于判断附件的类型
**********************************************/
function getContentType($inFileName){
//--去除路径
$inFileName = basename($inFileName);
//--去除没有扩展名的文件
if(strrchr($inFileName, ".") == false){
return "application/octet-stream";
}
//--提区扩展名并进行判断
$extension = strrchr($inFileName, ".");
switch($extension){
case ".gif": return "image/gif";
case ".gz": return "application/x-gzip";
case ".htm": return "text/html";
case ".html": return "text/html";
case ".jpg": return "image/jpeg";
case ".tar": return "application/x-tar";
case ".txt": return "text/plain";
case ".zip": return "application/zip";
default: return "application/octet-stream";
}
return "application/octet-stream";
}
/**********************************************
函数formatTextHeader把文本内容加上text的文件头
*****************************************************/
function formatTextHeader(){ $outTextHeader = "";
$outTextHeader .= "Content-Type: text/plain;
charset=us-asciin";
$outTextHeader .= "Content-Transfer-Encoding: 7bitnn";
$outTextHeader .= $this->mailText. "n";
return $outTextHeader;
} /************************************************
函数formatHTMLHeader()把邮件主体内容加上html的文件头
******************************************/
function formatHTMLHeader(){
$outHTMLHeader = "";
$outHTMLHeader .= "Content-Type: text/html;
charset=us-asciin";
$outHTMLHeader .= "Content-Transfer-Encoding: 7bitnn";
$outHTMLHeader .= $this->mailHTML. "n";
return $outHTMLHeader;
}
/**********************************
函数 formatAttachmentHeader($inFileLocation) 把邮件中的附件标识出来
********************************/
function formatAttachmentHeader($inFileLocation){
$outAttachmentHeader = "";
//--用上面的函数getContentType($inFileLocation)得出附件类型
$contentType = $this->getContentType($inFileLocation);
//--如果附件是文本型则用标准的7位编码
if(ereg( "text",$contentType)){
$outAttachmentHeader .= "Content-Type: ".$contentType. ";n";
$outAttachmentHeader .= name=".basename($inFileLocation). ". "n";
$outAttachmentHeader .= "Content-Transfer-Encoding: 7bitn";
$outAttachmentHeader .= "Content-Disposition: attachment;n";
$outAttachmentHeader .= filename=".basename($inFileLocation). ". "nn";
$textFile = fopen($inFileLocation, "r");
while(!feof($textFile)){
$outAttachmentHeader .= fgets($textFile,1000);
}
//--关闭文件 fclose($textFile);
$outAttachmentHeader .= "n";
}
//--非文本格式则用64位进行编码
else{ $outAttachmentHeader .= "Content-Type: ".$contentType. ";n";
$outAttachmentHeader .= name=".basename($inFileLocation). ". "n";
$outAttachmentHeader .= "Content-Transfer-Encoding: base64n";
$outAttachmentHeader .= "Content-Disposition: attachment;n";
$outAttachmentHeader .= filename=".basename($inFileLocation). ". "nn";
//--调用外部命令uuencode进行编码
exec( "uuencode -m $inFileLocation nothing_out",$returnArray);
for ($i = 1; $i<(count($returnArray)); $i++){
$outAttachmentHeader .= $returnArray[$i]. "n";
}
} return $outAttachmentHeader;
}
/******************************
函数 send()用于发送邮件，发送成功返回值为true
************************************/
function send(){
//--设置邮件头为空
$mailHeader = "";
//--添加抄送人
if($this->mailCC != "")
$mailHeader .= "CC: ".$this->mailCC. "n";
//--添加秘密抄送人
if($this->mailBCC != "")
$mailHeader .= "BCC: ".$this->mailBCC. "n";
//--添加发件人
if($this->mailFrom != "")
$mailHeader .= "FROM: ".$this->mailFrom. "n";
//---------------------------邮件格式------------------------------
//--文本格式
if($this->mailText != "" && $this->mailHTML == "" && $this->mailAttachments == ""){
return mail($this->mailTo,$this->mailSubject,$this->mailText,$mailHeader);
}
//--html或text格式
else if($this->mailText != "" && $this->mailHTML != "" && $this->mailAttachments == ""){
$bodyBoundary = $this->getRandomBoundary();
$textHeader = $this->formatTextHeader();
$htmlHeader = $this->formatHTMLHeader();
//--设置 MIME-版本
$mailHeader .= "MIME-Version: 1.0n";
$mailHeader .= "Content-Type: multipart/alternative;n";
$mailHeader .= boundary=".$bodyBoundary. ";
$mailHeader .= "nnn";
//--添加邮件主体和边界
$mailHeader .= "--".$bodyBoundary. "n";
$mailHeader .= $textHeader;
$mailHeader .= "--".$bodyBoundary. "n";
//--添加html标签
$mailHeader .= $htmlHeader;
$mailHeader .= "n--".$bodyBoundary. "--";
//--发送邮件
return mail($this->mailTo,$this->mailSubject, "",$mailHeader);
}
//--文本加html加附件
else if($this->mailText != "" && $this->mailHTML != "" && $this->mailAttachments != ""){
$attachmentBoundary = $this->getRandomBoundary();
$mailHeader .= "Content-Type: multipart/mixed;n";
$mailHeader .= boundary=".$attachmentBoundary. ". "nn";
$mailHeader .= "This is a multi-part message in MIME format.n";
$mailHeader .= "--".$attachmentBoundary. "n";
$bodyBoundary = $this->getRandomBoundary(1);
$textHeader = $this->formatTextHeader();
$htmlHeader = $this->formatHTMLHeader();
$mailHeader .= "MIME-Version: 1.0n";
$mailHeader .= "Content-Type: multipart/alternative;n";
$mailHeader .= boundary=".$bodyBoundary. ";
$mailHeader .= "nnn";
$mailHeader .= "--".$bodyBoundary. "n";
$mailHeader .= $textHeader;
$mailHeader .= "--".$bodyBoundary. "n";
$mailHeader .= $htmlHeader;
$mailHeader .= "n--".$bodyBoundary. "--";
//--获取附件值
$attachmentArray = explode( ",",$this->mailAttachments);
//--根据附件的个数进行循环
for($i=0;$i<count($attachmentArray);$i++){
//--分割 $mailHeader .= "n--".$attachmentBoundary. "n";
//--附件信息
$mailHeader .= $this->formatAttachmentHeader($attachmentArray[$i]);
}
$mailHeader .= "--".$attachmentBoundary. "--";
return mail($this->mailTo,$this->mailSubject, "",$mailHeader);
}
return false;
}
}
?>


使用方法：
<?
Include “email.class”

$mail->setTo("a@a.com"); //收件人
$mail-> setCC（"b@b.com,c@c.com"）; //抄送
$mail-> setCC（"d@b.com,e@c.com"）; //秘密抄送
$mail->setFrom(“f@f.com”);//发件人
$mail->setSubject(“主题”) ; //主题
$mail->setText(“文本格式”) ;//发送文本格式也可以是变量
$mail->setHTML(“html格式”) ;//发送html格式也可以是变量
$mail->setAttachments(“c:a.jpg”) ;//添加附件,需表明路径
$mail->send(); //发送邮件
?>