Ajax File - Processing a login request

if ( isset( $_POST['submit'] ) && $_SESSION['csrfToken'] == $_POST['csrfToken'] ) {

        $http_request = new http_req($Core->protocol . '://' . $Core->www_address . '/native/validate');
        $request = $http_request->make_post_request($_POST, false);
        $result = $http_request->POSTResponse()['return'] ? true : false;
        if($result == false)
            echo Error::HandleJsonError($http_request->POSTResponse());
        else {
            $_SESSION['username'] = $_POST['username'];
            $_SESSION['password'] = $_POST['password'];
            $Core->login($_SESSION);
            echo 'OAuthValidated';          // <- OAuthValidated is just a identifier, not really a keyword or state.
        }
    }