html-PHP mail（）関数でメールを送信しない簡単な連絡フォーム

 $name = htmlentities($_POST['name']);
$email_from = htmlentities($_POST['email']);  
$subject = htmlentities($_POST['subject']); 
$message = htmlentities($_POST['message']); 

$email_to = '[email protected]';//replace with your email

$headers = "From: [email protected]" . "\r\n" . "CC: ". $email_from; //This adds a from field, as well as CC's the person submitting the request.


//Build the body of the eamil
$body = 'Name: ' . $name . "\n\n" . 'Email: ' . $email_from . "\n\n" . 'Subject: ' . $subject . "\n\n" . 'message: ' . $message;

$success = mail($email_to, "Contact from site X, regarding: ".$subject, $body,$headers);
?>
<!DOCTYPE HTML>
<html lang="en-US">

  <head>
  <?php if($success){  //If the email was sent correctly?> 
    <script>

      alert("Thank you for getting in touch. We will contact you as soon as possible.");

    </script>

    <?php header('Location: ../index.html'); }else{?>
        <script>

            alert("There was an error when sending the email, please try again later.");

    </script>

<?php header('Location: ../index.html');  } //If the email falied?>
  </head>

他のファイル（html）は同じままです。 php/send-contact.phpのコードをこれに置き換えるだけです。