发送HTML电子邮件时$ _POST不起作用

Question

I've been figuring out what's wrong with my code. I keep getting $_POST not working. This is my HTML code:

<form id="EmailForm" action="mailForm.php" method="post" 
  onsubmit="validateForm()" enctype="text/plain">
  <div>
    Name: <input type="text" value="" name="name" size="30" />
    Email: <input type="text" value="" name="email" size="30" />
    Subject: <input type="text" value="" name="subject" size="60" />
    Message: <br />
    <textarea name="message" rows="5" cols="60"></textarea>
    <input type="submit" value="Send" />
  </div>
</form>

This is my mailForm.php code:

<?php
$name = $_POST['name']; 
$email = $_POST['email'];
$message = $_POST['message'];
$subject = $_POST['subject'];
$mailsent = mail("[e-mail]", "$subject", "$message

$name
$email", "");
if ($mailsent) {
echo ("Your email has been sent. Thank you for using our mail form. <br />");
echo ("Name: ".$name."<br />");
echo ("Email: ".$email."<br />");
echo ("Subject: ".$subject."<br />");
echo ("Message: ".$message);
}
?>

So far, I can get emails sent but all emails are empty. The name or email didn't show up, but get changed to the default name from the web hosting service. No name, no email, no subject, no message. At the mailForm.php, I got the following only:

Your email has been sent. Thank you for using our mail form.   
Name:
Email:
Subject: 
Message:

I've tried echo $_POST["name"]; echo $_POST["email"] but got empty page.

Answer 1

Just remove the enctype="text/plain":

<form id="EmailForm" action="mailForm.php" method="post" onsubmit="validateForm()">

Valid values in PHP for enctype in <form> tag are:

application/x-www-form-urlencoded
multipart/form-data