echo json_encode($response); } } elseif ($request == "register") { //a new user wants to be registered $name = $_POST["name"]; $email = $_POST["email"]; $password = $_POST["password"]; //check if the user exists if ($operation->isAlreadyRegistered($email)) { //a user has already been registered,send error response $response["error"] = 2; $response["error_message"] = "User already exists"; echo json_encode($response); } else { //store user $user = $operation->insertNewUser($name, $email, $password); if ($user) { $response["success"] = 1; $response["message"] = "Successfully registered..!"; $response["user"]["name"] = $user["_name"]; $response["user"]["email"] = $user["_email"]; $response["user"]["created_at"] = $user["_created_at"]; echo json_encode($response); } else { //registration failed $response["error"] = -1; $response["error_message"] = "Error occured during registration"; echo json_encode($response); } } } else {