特别容易的问题，发一封 HTML 格式的信

Question

mail("$to","$subject","<font color=red>test</font>","From:$from \nContent-Type:text/html;charset=\"bg2312\"Content-Transfer-Encoding: base64");

Answer 1

mail("$to","$subject","<font color=red>test</font>","From:$from \nContent-Type:text/html;charset=\"GB2312\"Content-Transfer-Encoding: base64");

Answer 2

y10k's class:
<?
/*------------------------------------------------------------------------
 程序名称：Mime Sendmail pro Class 1.0
 版权所有: y10k
 E-mail　: [email protected]
 OICQ　　: 6795798
 主页地址: http://www.zphp.com/
------------------------------------------------------------------------*/
Class sendMailPro {
    var $to       = array();    // 收信人
    var $from     = "";         // 发信人
    var $headers  = "";         // 头信息
    var $subject  = "";         // 主题
    var $body     = "";         // 内容
    var $mime     = "";         // Mime信息
    var $parts    = array();    // 附件
    var $filec;                 // 文件数目
    var $boundary = "";         // 分隔符
    var $type     = "text/plain";
    function sendMailPro($to, $from = "", $subject = "",$body = "", $headers = "") {
        if(is_array($to)) {
            $this->to    = $to;
        } else {
            $this->to[0] = $to;
        }
        $this->from      = $from;
        $this->subject   = $subject;
        $this->body      = $body;
        $this->headers   = $headers;        $this->boundary  = Chop("b".md5(uniqid(time())));
    }
    function addreciever($to) {
        $this->to[]      = $to;
        return 1;
    }
    function addAttachment($filecontent, $filename = "", $filetype = "application/octet-stream") {
        $this->filec++;
        if($filename=="") {
            $filename = "attachment_".$this->filec;
        }
        $this->parts[] = array(
            "type" => $filetype,
            "content" => $filecontent,
            "name" => $filename
        );
        return 1;
    }
    function addFile($filename) {
        $filecontent = fread(fopen($filename,"r"), filesize($filename));
        $filetype    = "application/octet-stream";
        $this->addAttachment($filecontent, $filename, $filetype);
    }
    function buildBody() {
        $body =$this->body;
        $boundary = $this->boundary;
        $bodyr = "--".$boundary;
        $bodyr = "\nContent-Type: ".$this->type."; charset=\"GB2312\"\nContent-Transfer-Encoding: quoted-printable\n\n";
        $bodyr.= $body."\n\n";
        $bodyr.= "--".$boundary;
        return $bodyr;
    }
    function buildContent($part) {
        $content  = $part["content"];
        $content  = chunk_split(base64_encode($content));
        $encoding = "base64";
        $return   = "Content-Type: ".$part["type"].";";
        $return  .= " name = \"".$part["name"]."\"\n";
        $return  .= "Content-Transfer-Encoding: $encoding\n";
        $return  .= "Content-Disposition: attachment; filename=\"".$part["name"]."\"\n\n";
        $return  .= "$content\n";
        return $return;
    }
    function buildMail() {
        $boundary = $this->boundary;
        $multipart = "Content-Type: multipart/mixed; boundary = \"$boundary\"\n\nThis is a MIME encoded message send by sendMailPro class(zlib).\n\n--$boundary";
        $multipart.= $this->buildBody();
        $attachmentCount = count($this->parts);
        if($attachmentCount==0) {
            return $multipart;
        }
        for($i = $attachmentCount-1;$i>=0;$i--){
            $multipart .= "\n".$this->buildContent($this->parts[$i])."--$boundary";
        }
        $multipart = chop($multipart);
        $multipart.= "--\n";
        return $multipart;
    }
    function isHtml($html = 'y') {
        if($html) {
            $this->type = "text/html";
        }
        return 1;
    }
    function send() {
        if($this->from<>'') {
            $this->mime.= "From: ".$this->from."\n";
        }
        $this->mime.= "MIME-Version: 1.0\n";
        $this->mime.= $this->buildMail();
        $to_count = count($this->to);
        for($i = 0;$i<$to_count;$i++) {
            mail($this->to[$i], $this->subject, "", $this->mime);
        }
        return 1;
    }
    function attachmentCount() {
        return $this->filec;
    }
}
?>Example:
------------------------------------------------------------------------------------
You can send a non-HTML mail like this:
<?
$mail = new sendMailPro($to,$from,$subject,$body);
$mail->send();
?>You can send a HTML mail like this:
<?
$mail = new sendMailPro($to,$from,$subject,$body);
$mail->isHtml();
$mail->send();
?>You can send a mail with Attachment like this:
<?
$mail = new sendMailPro($to,$from,$subject,$body);
$mail->isHtml();
$mail->addFile($attachmentpath);
$mail->send();
?>