所以我有一个表格，可以发送到电子邮件并写入文件。但是，它遗漏了一个选择字段。有趣，因为它很好地选择了另一个选择字段，我复制了它。它省略了联系人字段（$contact，联系人是如何建立的？）。有任何想法吗？
HTML
<form action="mail.php" method="POST" id="serivce_form">
<p>Submitter Name :
<input type="text" name="submitter_name" /></p>
<p>Name :
<input type="text" name="name" /></p>
<p>Time :
<input type="text" name="time" /></p>
<p>Date :
<input type="date" name="date" id="date" /></p>
<p>How was the contact made? </p>
<select name="contact" size="1">
<option selected value="">Select...</option>
<option value="phone">Phone</option>
<option value="email">Email</option>
<option value="other">Other</option>
</select>
<p>Phone :
<input type="text" name="phone" /></p>
<p>Email :
<input type="text" name="email" /></p>
<p>How did you hear about us? </p>
<select name="source" size="1">
<option selected value="">Select...</option>
<option value="online">Online</option>
<option value="client referral">Client Referral</option>
<option value="non client referral">Non Client Referral</option>
<option value="other">Other</option>
</select>
<br />
<p>Experience : </p>
<select name="experience" size="1">
<option selected value="">Select...</option>
<option value="Praise">Praise</option>
<option value="Compliment">Compliment</option>
<option value="New Client">New Client</option>
<option value="Existing Client Maintenance">Existing Client Maintenance</option>
<option value="Other">Other</option>
</select>
<br />
<p>Message : </p><textarea name="message" rows="6" cols="25"></textarea>
<br />
<input type="submit" value="Send" />
<input type="reset" value="Clear" />
</form>
PHP
<?php
$submitter_name = $_POST['submitter_name'];
$name = $_POST['name'];
$time = $_POST['time'];
$date = $_POST['date'];
$contact = $_POST['contact'];
$phone = $_POST['phone'];
$email = $_POST['email'];
$source = $_POST['source'];
$experience = $_POST['experience'];
$message = $_POST['message'];
$from_name = 'Form Name';
$from = 'email@email.com';
$to = 'email2@email.com';
$subject = 'Subject';
$semi_rand = md5(time());
$mime_boundary = "==Multipart_Boundary_x{$semi_rand}x";
$headers = "From: ".$from . "\r\nFrom: ".$from_name." <".$from.">\r\n";
$headers .= "MIME-Version: 1.0\r\n" .
"Content-Type: multipart/mixed;\r\n" .
" boundary=\"{$mime_boundary}\"";
$message_top = "This is a multi-part message in MIME format.\r\n" .
"--{$mime_boundary}\r\n" .
"Content-Type:text/html; charset=\"iso-8859-1\"\r\n" .
"Content-Transfer-Encoding: 7bit\r\n";
$email_message = "\n"."Submitter Name: $submitter_name<br />
Name: $name<br />
Time: $time<br />
Date: $date<br />
How was the contact made? $contact<br />
Phone: $phone<br />
Email: $email<br />
How did you hear about us? $source<br />
Experience: $experience<br />
Message: $message<br />";
$email_message = stripslashes($email_message);
$email_message = str_replace("\n","\r\n",$email_message);
$email_message = $message_top . $email_message;
mail($to, $subject, $email_message, $headers);
echo "Thank You!" . " -" . "<a href='form.html' style='text-decoration:none;color:#ff0099;'> Go back</a>";
//TO FILE
$message = str_replace(",","",$message);
$content = "\n$submitter_name,$name,$time,$date,$contact,$phone,$email,$source,$experience,$message";
$f = fopen("lw_service_log.txt", "a");
fwrite($f, $content);
fclose($f);
?>