php生成的电子邮件与csv附件 - 发送额外（不正确）的版本

I am a complete novice with php, so forgive me if this is something very obvious! I have tried to create an html form on my website which, when submitted, generates an email with a csv attachement which is sent to me with the relevant information.

I have been using code found online (some from this forum) to try to create a solution and seem to be vey close - however there is a problem somewhere. I am receiving 2 emails when submitted - the first is incorrect in that it is missing the senders' email address and the csv has no information - the second email is exactly right however.

This is the code I am using:

<?php

        $email=$_POST['email'];
        $customer=$_POST['customer'];
        $quantity=$_POST['quantity'];
        $prefix=$_POST['prefix'];
        $itemno=$_POST['itemno'];
        $format=$_POST['format'];



        $to = "me@myemail.com";


        $subject = "Form 01";

        //Message Body
        $text = "Form 01 attached";

        //The Attachment

         $cr = "
";
        $data .= "$email" . $cr;
        $data .= "$customer" . $cr;
        $data .= "$quantity" . $cr;
        $data .= "$prefix" . $cr;
        $data .= "$itemno" . $cr;
        $data .= "$format" . $cr;
        $fp = fopen('form01.csv','a');
        fwrite($fp,$data);
        fclose($fp);

        $attachments[] = Array(
           'data' => $data,
           'name' => 'form_01.csv',
           'type' => 'application/vnd.ms-excel'
        );


        //Generate a boundary string

        $semi_rand = md5(time());
        $mime_boundary = "==Multipart_Boundary_x{$semi_rand}x";


        //Add the headers for a file attachment


        $headers = "MIME-Version: 1.0
" .
                   "From: {$from}
" .
                   "Content-Type: multipart/mixed;
" .
                   " boundary=\"{$mime_boundary}\"";


        //Add a multipart boundary above the plain message


        $message = "This is a multi-part message in MIME format.

" .
                  "--{$mime_boundary}
" .
                  "Content-Type: text/html; charset=\"iso-8859-1\"
" .
                  "Content-Transfer-Encoding: 7bit

" .
                  $text . "

";


        //Add attachments

        foreach($attachments as $attachment){
           $data = chunk_split(base64_encode($attachment['data']));
           $name = $attachment['name'];
           $type = $attachment['type'];

           $message .= "--{$mime_boundary}
" .
                      "Content-Type: {$type};
" .
                      " name=\"{$name}\"
" .
                      "Content-Transfer-Encoding: base64

" .
                      $data . "

" ;
        }

        $message .= "--{$mime_boundary}--
";
        mail($to, $subject, $message, $headers);


        ?>

I am also trying to add in reCaptcha, this is going in fine except it only seems to be allowing the first email to get through - which is the incorrect one. So I hope if the problem is in the code above and it can be fixed, then this should be solved too.

Thanks in advance!

The code you are giving us is (I guess) incomplete. It is (obviously) not the complete HTML page. I guess this PHP script is at the top of your HTML page right above your form. Am I right?

So when you open the page your PHP script sends the first (empty) email. After the form is submitted and your $_POST array is filed with data the second (and correct) email will be sent.

To fix this you must check if the $_POST array is not empty:

<?php
if (!empty($_POST["email"])) {
   //your code here
}
?>

Like this here: If isset $_POST