app.controller('ContactController', function ($scope, $http) {
    $scope.result = 'hidden'
    $scope.resultMessage;
    $scope.formData; //formData is an object holding the name, email, subject, and message
    $scope.submitButtonDisabled = false;
    $scope.submitted = false;
    $scope.submit = function(contactform) {
        $scope.submitted = true;
        $scope.submitButtonDisabled = true;
        if (contactform.$valid) {
            var request = $http({
                method  : 'POST',
                url     : 'php/contact.php',
                data    : $.param($scope.formData),  //param method from jQuery
                headers : { 'Content-Type': 'application/x-www-form-urlencoded' }
            });
            if (request.success) {
                console.log(request);
                $scope.submitButtonDisabled = false;
                $scope.result='bg-success';
                $scope.resultMessage = request.message;
              } else {
                $scope.submitButtonDisabled = true;
                $scope.resultMessage = request.message;
                //$scope.resultMessage = "Opps!... something went wrong.  Please Contact OpenHouse directly to let them know of this error.";
                $scope.result='bg-danger';
            };
               //};
           } else {
            $scope.submitButtonDisabled = false;
            $scope.resultMessage = 'Failed <img src="http://www.chaosm.net/blog/wp-includes/images/smilies/icon_sad.gif" alt=":(" class="wp-smiley">  Please fill out all the fields.';
            $scope.result='bg-danger';
        }
    }
});

<?php

  require_once ("class.phpmailer.php");   // Include phpmailer class
  ini_set('display_errors', 'On');
  error_reporting(E_ALL | E_STRICT);

  if (isset($_POST['inputFirstName']) && isset($_POST['inputLastName']) && isset($_POST['inputEmail']) && isset($_POST['inputPhone']) && isset($_POST['inputMessage'])) {

    //check if any of the inputs are empty
    if (empty($_POST['inputFirstName']) || empty($_POST['inputLastName']) || empty($_POST['inputEmail']) || empty($_POST['inputPhone']) || empty($_POST['inputMessage'])) {
        $data = array('success' => false, 'message' => 'Please fill out the form completely.');
        echo json_encode($data);
        exit;
    }

    $message=
    'First Name:    '.$_POST['inputFirstName'].'<br />
    Last Name:  '.$_POST['inputLastName'].'<br />
    Phone:  '.$_POST['inputPhone'].'<br />
    Email:  '.$_POST['inputEmail'].'<br />
    Comments:   '.$_POST['inputMessage'].'
    ';

    $mail = new PHPMailer();        // Instantiate the PHPMailer Class
    $mail->IsSMTP();                // enable SMTP
    $mail->SMTPDebug = 1;           // debugging: 1 = errors and messages, 2 = messages only
    $mail->SMTPAuth = true;         // SMTP authentication enabled
    $mail->SMTPSecure = 'ssl';      // secure transfer enabled + REQUIRED for Gmail (either SSL or TLS)
    $mail->Host = "smtp.gmail.com"; //Gmail SMTP Server to relay thru
    $mail->Port = 465; // Port 465 as we're using SSL... or use Port 587 for TLS
    $mail->IsHTML(true);                               // We're sending a HTML formatted message
    $mail->Username = "....@gmail.com"; // Gmail account for authentication
    $mail->Password = "*********";                     // Gmail password for authentication
    $mail->SetFrom("....@gmail.com");   // The email is being sent from this address
    $mail->Subject = "Website Contact Form Enquiry";   // The subject line of the email
    $mail->Body = ($message);                          // The actual email message to be sent
    $mail->AddAddress("....@gmail.com"); // The email is being sent to this address

   if(!$mail->send()) {
     echo json_encode(['success' => false, 'message' => 'Message could not be sent. Mailer Error: ' . $mail->ErrorInfo]);
     exit;
   }

   error_log("Data: ".$data['success']." Message: ".$data['message']);
   echo json_encode(['success' => true, 'message' => 'Thanks! We have received your message.']);

    } else {
      echo json_encode(['success' => false, 'message' => 'Please fill out the form completely.']);
    }
 ?>