php邮件脚本表单只返回标题

Question

我一直无法让我的php邮件脚本工作。我是相当新的，所以请和我在一起。

我的php邮件表单似乎只返回输入字段的标题，而不是输入的实际信息..

这是我现在的代码。任何帮助，将不胜感激。

    <form id="contact_form" class="cf" role="form" name="contact_form" method="post" action="mailscript.php">

    <div id="left_form_container">

      <div class="half_left_cf">
        <input type="text" name="name" id="input_name" placeholder="Name">
        <input type="email" name="email" id="input_email" placeholder="Email address">
        <input type="text" name="subject" id="input_subject" placeholder="Subject">


      </div>

    </div>

    <div id="right_form_container">

      <div class="half_right_cf">
        <textarea name="message" id="input_message" type="text" placeholder="Message"></textarea>



        <div id="submit_container">
          <input type="submit" name="submit" value="Submit" id="input_submit">
        </div>
          </div>

    </div>



  </form>

<?php

$name = $_POST['name'];
$email = $_POST['email'];
$subject = $_POST['subject'];
$message = $_POST['message'];
$to = "mail@website.com";

$body = "From: ".$name."\n E-Mail: ".$email."\n Message:\n" .$message;


if(empty($_POST['name'])){
    $nameErr = "Name is required";}
if(empty($_POST['email'])){
    $nameErr = "Email is required";}
if(empty($_POST['subject'])){
    $nameErr = "Subject is required";} 

if(mail ($to, $subject, $body)){

    echo "<script>
            alert('Thank you for sending your message!');
            window.location.href='index.php'; </script";} 

else {
    echo "Mail was not sent!";}
?>

正如我所说，出于某种原因，它只是没有从框中返回任何输入，只有标题..

感谢您的帮助。