php联系人表单，可在收件箱中显示发件人的电子邮件地址

Question

I would like to create a form that will simply allow the recipient of the messages the ability to click 'reply to' when responding to a website message from their inbox. The reply should auto populate with the sender's email address.

I think that I need to change the $mailheader from a specific email address to .$_POST, but my attempts are not working correctly. I feel like it must be something small that I am doing incorrectly.

Here is the php form code. It is working as is, but I am attempting to edit/improve usability:

<?
$name = $_POST['name'];
$email = $_POST['email'];
$phone = $_POST['phone'];
$message = $_POST['message'];
$security = $_POST['security'];

$to = "website-owner@gmail.com";
$subject = "Contact Message from Website";
$message = "A visitor of exampledomain.com has submitted the following message.\n\nName: $name\n\nEmail: $email\n\nPhone: $phone\n\nMessage: $message";
$mailheaders = "From: webmaster@example.com\r\nReply-To: webmaster@example.com";


if ($security=="10") {
    mail($to,$subject,$message,$mailheaders);
    header("Location:contact.php?s=1");
}
else {
    header("Location:contact.php?s=2");
}
?>

This was my first attempt:

$mailheader = "From: ".$_POST["email"]."\r\nReply-To: ".$_POST["email"]."\r\n";

This was my second attempt:

$mailheaders .= "Reply-To: ".$_POST["email"]."\r\n";
$mailheaders .= "From: ".$_POST['Email']."\r\n";

This was my third attempt:

$mailheaders = "Reply-To: ".$_POST["email"]."\r\n";
$mailheaders = "From: ".$_POST['Email']."\r\n";

Answer 1

I figured it out! This mail header works.

$mailheaders = 'From: webmaster@example.com' . "\r\n" .
        'Reply-To: ' . $email . "\r\n" .
        'X-Mailer: PHP/' . phpversion();