}
} elseif (isset($_POST['registerUsername']) && isset($_POST['registerPassword'])) {
$username = $_POST['registerUsername'];
//not seen by user in HTML view
$password = $_POST['registerPassword'];
//not seen by user in HTML view
$firstname = htmlspecialchars(trim($_POST['registerFirstName']));
$lastname = htmlspecialchars(trim($_POST['registerLastName']));
$publication = htmlspecialchars(trim($_POST['registerPublication']));
if ($modelMethods->usernameExists($username)) {
session_start();
$_SESSION['registrationError'] = 'Username has already been taken';
header("Location: register.php");
} else {
$modelMethods->register($username, $password);
$modelMethods->addReviewer($username, $firstname, $lastname, $publication);
header("Location: index.php");
}
} elseif (isset($_POST['logout'])) {
//NOT NEEDED FOR OUR IMPLEMENTATION OF LOGOUT
session_start();
// to ensure you are using same session
session_destroy();
// destroy the session so $SESSION['anything'] is not set
header("Location: index.php");
} elseif (isset($_POST['newTitle'])) {
$title = htmlspecialchars(trim($_POST['newTitle']));
//UPLOAD IMAGE
if (!isset($_FILES['file']['error']) || $_FILES['file']['error'] !== UPLOAD_ERR_OK) {
die("Upload failed with error");
}
