Contact form returning blank email - php

Question

My Foundation 5 contact form is returning blank emails for some reason. The javascript is correct but I can't see anything wrong with my PHP file. What am I doing wrong? Here's the PHP:
<?php
$name = $_POST["t_name"];
$email = $_POST["t_email"];
$message = $_POST["t_message"];
$msg = "
Name: $name
Email: $email
Commments:
$message
";
$to = "me#me.com";
$subject = "From My Site";
$message = $msg;
mail($to,$subject,$message,$headers);
?>
the HTML:
<div id="contactForm" class="large-6 large-offset-6 columns">
<form id="t-contact-form" method="post" data-abide="ajax">
<small class="error">Your full name is required.</small>
<input name="t_name" id="t_name" type="text" placeholder="Full Name" required>
<small class="error">An email address is required.</small>
<input name="t_email" id="d_email" type="email" placeholder="username#address.com" required>
<small class="error">Your message is required.</small>
<textarea name="t_message" id="d_message" placeholder="Enter your message here" required></textarea>
<button class="contact-submit submit">Submit</button>
</a>
</form>
</div>
and the js:
$('#t-contact-form').on('valid.fndtn.abide', function() {
var t_name = $("input#t_name").val();
var t_email = $("input#t_email").val();
var t_message = $("textarea#t_message").val();
// Data for response
var dataString = 'name=' + t_name +
'&email=' + t_email +
'&message=' + t_message;
//Begin Ajax Call
$.ajax({
type: "POST",
url: "assets/php/t-mail.php",
data: dataString,
success: function() {
$('#t-contact-form').html("<div id='success'></div>");
$('#success').html("<h2>Thanks!</h2>")
.append("<p>Dear" + t_name + "!, I look forward to working with you.</p>")
.hide()
.fadeIn(1500);
},
}); //ajax call
return false;
});

Answer 1

The AJAX call sending using name and not t_name, same for email and message. How it was originally named in the HTML doesn't matter to PHP, only the posted data matters.
var dataString = 'name=' + t_name +
'&email=' + t_email +
'&message=' + t_message;
So in PHP you should do
<?php
$name = $_POST["name"];
$email = $_POST["email"];
$message = $_POST["message"];
Additionally you're getting the inputs by id, but using the names in the JavaScript. Either rename them to t_email and t_message in the HTML or modify the JavaScript.
<input name="t_email" id="t_email" type="email" placeholder="username#address.com" required>
<textarea name="t_message" id="t_message" placeholder="Enter your message here" required></textarea>

Answer 2

In js
In the third line change #t_email to #d_email and it will work