我在 chrome 中有一个奇怪的问题，我正在使用 window.open 打开一个新选项卡并使用 tcpdf 创建一个 pdf，然后将其作为附件发送到特定地址，现在在 chrome 中发生的是它发送 2 封邮件。如果启用了弹出窗口，那么我会得到 2 个窗口操作 1. 弹出窗口和 2. 新选项卡，首先我不明白这怎么可能，我从来没有见过这个。
然后如果禁用弹出窗口，它只会在新选项卡中打开，但仍然有 2 封邮件。
下面提到了用于调用弹出页面和电子邮件代码的代码。请帮忙。
window.open('/loancal/rhexportemail.php' + qstring,"_blank");
//Code used to open popup
//------------- EMAIL CODE ----------------//
$to = "someone@gamil.com";
$from = "info@mydomain.com";
$subject = "Loan Enquiry Calculation Cashback - " . $client;
$message = "Please find attached Loan Enquiry Calculation Cashback statement for ".$client."." ;
//a random hash will be necessary to send mixed content
$separator = md5(time());
// carriage return type (we use a PHP end of line constant)
$eol = PHP_EOL;
// attachment name
$filename = $subject.".pdf";
// encode data (puts attachment in proper format)
$pdfdoc = $pdf->Output('LECC'.$separator.'.pdf', 'S');
$attachment = chunk_split(base64_encode($pdfdoc));
// encode data (multipart mandatory)
$headers = "From: ".$from.$eol;
$headers .= "MIME-Version: 1.0".$eol;
$headers .= "Content-Type: multipart/mixed; boundary=\"".$separator."\"".$eol.$eol;
$headers .= "Content-Transfer-Enconding: 7bit".$eol;
$headers .= "This is a MIME encoded message.".$eol.$eol;
// message
$headers .= "--".$separator.$eol;
$headers .= "Content-Type: text/html; charsrt=\"iso-8859-1\"".$eol;
$headers .= $message.$eol.$eol;
// attachment
$headers .= "--".$separator.$eol;
$headers .= "Content-Type: application/octet-stream; name=\"".$filename."\"".$eol;
$headers .= "Content-Transfer-Encoding: base64".$eol;
$headers .= "Content-Disposition: attachment".$eol.$eol;
$headers .= $attachment.$eol.$eol;
$headers .= "--".$separator."--";
// send message
if(@mail($to, $subject, $message, $headers))
{
echo "<script type='text/javascript'> alert('mail sent');window.close();</script>";
}
else{
echo "<script type='text/javascript'>alert('mail not sent');window.close(); </script>";
}