Php邮件与附件发送

Question

我已经编写了使用附件发送邮件的代码，我收到邮件但是带有图标的非文件文件。我提供文件名和休息详细信息的路径来发送邮件。

我已经为这个migth编写了代码，因为有头问题我没有得到这个问题。

代码：

 $file = $path.$filename;
 $file_size = filesize($file);
 $handle = fopen($file, "r");
 $content = fread($handle, $file_size);
 fclose($handle);
 $content = chunk_split(base64_encode($content));
 $uid = md5(uniqid(time()));
 $header = "From: ".$from_name." <".$from_mail.">\r\n";
 $header .= "Reply-To: ".$replyto."\r\n";
 $header .= "MIME-Version: 1.0\r\n";
 $header .= "Content-Type: multipart/mixed; boundary=\"".$uid."\"\r\n\r\n";
 $header .= "This is a multi-part message in MIME format.\r\n";
 $header .= "--".$uid."\r\n";
 $header .= "Content-type:text/plain; charset=iso-8859-1\r\n";
 $header .= "Content-Transfer-Encoding: 7bit\r\n\r\n";
 $header .= $message."\r\n\r\n";
 $header .= "--".$uid."\r\n";
 $header .= "Content-Type: application/octet-stream; name=\"".$filename."\"\r\n"; // use different content types here
 $header .= "Content-Transfer-Encoding: base64\r\n";
 $header .= "Content-Disposition: attachment; filename=\"".$filename."\"\r\n\r\n";
 $header .= $content."\r\n\r\n";
 $header .= "--".$uid."--";
 if (mail($mailto, $subject, "", $header)) {
 echo "mail send ... OK"; // or use booleans here
 } else {
 echo "mail send ... ERROR!";
 }