php实现邮件发送并带有附件

emailclass.php

代码如下:

<?

class CMailFile {

var $subject;

var $addr_to;

var $text_body;

var $text_encoded;

var $mime_headers;

var $mime_boundary = "--==================_846811060==_";

var $smtp_headers;

function CMailFile($subject,$to,$from,$msg,$filename,$downfilename,$mimetype = "application/octet-stream",$mime_filename = false) {

$this->subject = $subject;

$this->addr_to = $to;

$this->smtp_headers = $this->write_smtpheaders($from);

$this->text_body = $this->write_body($msg);

$this->text_encoded = $this->attach_file($filename,$downfilename,$mimetype,$mime_filename);

$this->mime_headers = $this->write_mimeheaders($filename, $mime_filename);

}

function attach_file($filename,$downfilename,$mimetype,$mime_filename) {

$encoded = $this->encode_file($filename);

if ($mime_filename) $filename = $mime_filename;

$out = "--" . $this->mime_boundary . "n";

$out = $out . "Content-type: " . $mimetype . "; name="$filename";n";

$out = $out . "Content-Transfer-Encoding: base64n";

$out = $out . "Content-disposition: attachment; filename="$downfilename"nn";

$out = $out . $encoded . "n";

$out = $out . "--" . $this->mime_boundary . "--" . "n";

return $out;

}

function encode_file($sourcefile) {

if (is_readable($sourcefile)) {

$fd = fopen($sourcefile, "r");

$contents = fread($fd, filesize($sourcefile));

$encoded = chunk_split(base64_encode($contents));

fclose($fd);

}

return $encoded;

}

function sendfile() {

$headers = $this->smtp_headers . $this->mime_headers;

$message = $this->text_body . $this->text_encoded;

mail($this->addr_to,$this->subject,$message,$headers);

} www.jbxue.com

function write_body($msgtext) {

$out = "--" . $this->mime_boundary . "n";

$out = $out . "Content-Type: text/plain; charset="us-ascii"nn";

$out = $out . $msgtext . "n";

return $out;

}

function write_mimeheaders($filename, $mime_filename) {

if ($mime_filename) $filename = $mime_filename;

$out = "MIME-version: 1.0n";

$out = $out . "Content-type: multipart/mixed; ";

$out = $out . "boundary="$this->mime_boundary"n";

$out = $out . "Content-transfer-encoding: 7BITn";

$out = $out . "X-attachments: $filename;nn";

return $out;

}

function write_smtpheaders($addr_from) {

$out = "From: $addr_fromn";

$out = $out . "Reply-To: $addr_fromn";

$out = $out . "X-Mailer: PHP3n";

$out = $out . "X-Sender: $addr_fromn";

return $out;

}

}

/*用法 - 例如:mimetype 为 "image/gif"

$mailfile = new CMailFile($subject,$sendto,$replyto,$message,$filename,$mimetype);

$mailfile->sendfile();

$subject -- 主题

$sendto -- 收信人地址

$replyto -- 回复地址

$message -- 信件内容

$filename -- 附件文件名

$downfilename -- 下