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我有一些代碼發送帶附件的電子郵件。我收到附件中的電子郵件，但它顯示了html元素。我正在使用Content-Type：multipart/mixed;邊界= ...當我發送帶有附件的電子郵件時，我會看到電子郵件中的html元素，但是如果我沒有附件發送它，電子郵件將正常顯示。 下面是代碼：用PHP發送html郵件
if(is_uploaded_file($_FILES['attachment']['tmp_name'])){
//die("uploaded");
copy($_FILES['attachment']['tmp_name'],"attachments/" . $_FILES['attachment']['name']);
$file = $_FILES['attachment']['tmp_name'];
$file_type = $_FILES['attachment']['type'];
$file_name = $_FILES['attachment']['name'];
$fopen = fopen($file, 'rb');
$data = fread($fopen,filesize($file));
fclose($fopen);
$semi_rand = md5(time());
$mime_boundary = "==Multipart_Boundary_x{$semi_rand}x";
$headers = "From: " .EMAIL_FROM_ADDR. "\r\n";
$headers .= "Reply-To: ".EMAIL_FROM_ADDR."\r\n";
$headers .= "CC: [email protected]\r\n";
$headers .= "MIME-Version: 1.0\r\n";
$headers .= "Content-Type: multipart/mixed; boundary=\"{$mime_boundary}\"";
$message = "This is a multi-part message in MIME format.\n\n".
"--{$mime_boundary}\n".
"Content-Type: text/plain; charset=\"iso-8859-1\"\n" .
"Content-Transfer-Encoding: 7bit\n\n".
"<table border='1' cellspacing='1' cellpadding='1'>".
"<tr><td>Vendor Name:</td><td>".$_POST['vendor_name']."</td></tr>".
"<tr><td>Internet Agreement No:</td><td>".$_POST['internet_agreement_no']."</td></tr>".
"<tr><td>Vendor Duns No:</td><td>".$_POST['vendor_duns_no']."</td></tr>".
"<tr><td>Fee to NEXCOM:</td><td>".$_POST['fee_to_nexcom']."%</td></tr>".
"<tr><td>Settlement Worksheet For:</td><td>".$_POST['settlement_worksheet_date']."</td></tr>".
"<tr><td colspan='2'> </td></tr>".
"<tr><td>Total Gross Sales:</td><td>$".$_POST['total_gross_sales_1']."</td></tr>".
"<tr><td>Deductions:</td><td>$".$_POST['deductions']."</td></tr>".
"<tr><td>Refunds/Credits(Attach Backup):</td><td>$".$_POST['refunds_credits']."</td></tr>".
"<tr><td>Sales Tax:</td><td>$".$_POST['sales_tax']."</td></tr>".
"<tr><td>State Tax:</td><td>$".$_POST['state_tax']."</td></tr>".
"<tr><td>Other(Explain):".$_POST['explain_1']."</td><td>$".$_POST['other_1']."</td></tr>".
"<tr><td>Other(Explain):".$_POST['explain_2']."</td><td>$".$_POST['other_2']."</td></tr>".
"<tr><td>Total Deductions:</td><td>$".$_POST['total_deductions']."</td></tr>".
"<tr><td>Total Gross Sales:</td><td>$".$_POST['total_gross_sales_2']."</td></tr>".
"<tr><td>Less Deductions:</td><td>$".$_POST['less_deductions']."</td></tr>".
"<tr><td>Net Sales Subject to Commission:</td><td>$".$_POST['net_sales_subject']."</td></tr>".
"<tr><td>Net Commission due to NEXCOM:</td><td>$".$_POST['net_commission_due']."</td></tr>".
"<tr><td colspan='2'>Comments:</td></tr>".
"<tr><td colspan='2'>".$_POST['comments']."</td></tr>".
"</table>\n\n";
$data = chunk_split(base64_encode($data));
$message .= "--{$mime_boundary}\n".
"Content-Type: {$file_type}; name=\"{$file_name}\"\n".
"Content-Disposition: attachment; filename=\"{$file_name}\"\n".
"Content-Transfer-Encoding: base64\n\n".
$data."\n\n".
"--{$mime_boundary}--\n";
}
else{
//die("not uploaded");
$headers = "From: " .EMAIL_FROM_ADDR. "\r\n";
$headers .= "Reply-To: ".EMAIL_FROM_ADDR."\r\n";
$headers .= "CC: [email protected]\r\n";
$headers .= "MIME-Version: 1.0\r\n";
$headers .= "Content-Type: text/html; charset=ISO-8859-1\r\n";
$message = "<table border='1' cellspacing='1' cellpadding='1'>".
"<tr><td>Vendor Name:</td><td>".$_POST['vendor_name']."</td></tr>".
"<tr><td>Internet Agreement No:</td><td>".$_POST['internet_agreement_no']."</td></tr>".
"<tr><td>Vendor Duns No:</td><td>".$_POST['vendor_duns_no']."</td></tr>".
"<tr><td>Fee to NEXCOM:</td><td>".$_POST['fee_to_nexcom']."%</td></tr>".
"<tr><td>Settlement Worksheet For:</td><td>".$_POST['settlement_worksheet_date']."</td></tr>".
"<tr><td colspan='2'> </td></tr>".
"<tr><td>Total Gross Sales:</td><td>$".$_POST['total_gross_sales_1']."</td></tr>".
"<tr><td>Deductions:</td><td>$".$_POST['deductions']."</td></tr>".
"<tr><td>Refunds/Credits(Attach Backup):</td><td>$".$_POST['refunds_credits']."</td></tr>".
"<tr><td>Sales Tax:</td><td>$".$_POST['sales_tax']."</td></tr>".
"<tr><td>State Tax:</td><td>$".$_POST['state_tax']."</td></tr>".
"<tr><td>Other(Explain):".$_POST['explain_1']."</td><td>$".$_POST['other_1']."</td></tr>".
"<tr><td>Other(Explain):".$_POST['explain_2']."</td><td>$".$_POST['other_2']."</td></tr>".
"<tr><td>Total Deductions:</td><td>$".$_POST['total_deductions']."</td></tr>".
"<tr><td>Total Gross Sales:</td><td>$".$_POST['total_gross_sales_2']."</td></tr>".
"<tr><td>Less Deductions:</td><td>$".$_POST['less_deductions']."</td></tr>".
"<tr><td>Net Sales Subject to Commission:</td><td>$".$_POST['net_sales_subject']."</td></tr>".
"<tr><td>Net Commission due to NEXCOM:</td><td>$".$_POST['net_commission_due']."</td></tr>".
"<tr><td colspan='2'>Comments:</td></tr>".
"<tr><td colspan='2'>".$_POST['comments']."</td></tr>".
"</table>";
}