Formmail PHP

I’ve attached the below PHP code to my email form but for some reason when I receive emails it doesn’t show a subject.

Any reason why?

<?php
	
	$emailSubject = 'EMAIL_FORM_SUBJECT';
	$webMaster = 'my_email_address.com';

	$nameField = $_POST['name'];
	$emailField = $_POST['email'];
	$phoneField = $_POST['phone'];
	$howField = $_POST['how'];
	$dateField = $_POST['date'];
	$serviceField = $_POST['service'];
	$methodField = $_POST['method'];
	$messageField = $_POST['message'];
	
	$body = <<<EOD
<br><hr><br>
Name: $nameField <br><br>
Email: $emailField <br><br>
Phone: $phoneField <br><br>
How did you hear about us: $howField <br><br>
Wedding Date: $dateField <br><br>
Service Type: $serviceField <br><br>
Preferred Contact Method: $methodField <br><br>
Message: $messageField <br><br>
EOD;

	$headers = "From: $emailField
";
	$headers .= "Content-type: text/html
";
	$success = mail($webMaster, $emailsubject, $body, $headers);

	$theResults = <<<EOD


<!--ADD THANK YOU PAGE HERE -->


EOD;
echo "$theResults";

?>

Below is the layout I receive from the above code:

From:
Date:
To:


Name:
Email:
Phone:
How did you hear about us:
Wedding Date:
Service Type:
Preferred Contact Method:
Message: