phpbb\convert\controller\convertor::settings PHP Method

    public function settings($convertor)
    {
        $this->setup_navigation('settings');
        require_once $this->phpbb_root_path . 'includes/constants.' . $this->php_ext;
        require_once $this->phpbb_root_path . 'includes/functions_convert.' . $this->php_ext;
        // Include convertor if available
        $convertor_file_path = $this->phpbb_root_path . 'install/convertors/convert_' . $convertor . '.' . $this->php_ext;
        if (!file_exists($convertor_file_path)) {
            if ($this->request->is_ajax()) {
                $response = new StreamedResponse();
                $ref = $this;
                $response->setCallback(function () use($ref) {
                    $ref->render_error('CONVERT_NOT_EXIST');
                });
                $response->headers->set('X-Accel-Buffering', 'no');
                return $response;
            }
            $this->render_error('CONVERT_NOT_EXIST');
            return $this->controller_helper->render('installer_convert.html', 'STAGE_SETTINGS', true);
        }
        $get_info = true;
        $phpbb_root_path = $this->phpbb_root_path;
        // These globals are required
        $phpEx = $this->php_ext;
        // See above
        include_once $convertor_file_path;
        // The test_file is a file that should be present in the location of the old board.
        if (!isset($test_file)) {
            if ($this->request->is_ajax()) {
                $response = new StreamedResponse();
                $ref = $this;
                $response->setCallback(function () use($ref) {
                    $ref->render_error('DEV_NO_TEST_FILE');
                });
                $response->headers->set('X-Accel-Buffering', 'no');
                return $response;
            }
            $this->render_error('DEV_NO_TEST_FILE');
            return $this->controller_helper->render('installer_convert.html', 'STAGE_SETTINGS', true);
        }
        if ($this->request->variable('submit', false)) {
            // It must be an AJAX request at this point
            $response = new StreamedResponse();
            $ref = $this;
            $response->setCallback(function () use($ref, $convertor) {
                $ref->proccess_settings_form($convertor);
            });
            $response->headers->set('X-Accel-Buffering', 'no');
            return $response;
        } else {
            $this->template->assign_vars(array('U_ACTION' => $this->controller_helper->route('phpbb_convert_settings', array('convertor' => $convertor))));
            if ($this->request->is_ajax()) {
                $response = new StreamedResponse();
                $ref = $this;
                $response->setCallback(function () use($ref) {
                    $ref->render_settings_form();
                });
                $response->headers->set('X-Accel-Buffering', 'no');
                return $response;
            }
            $this->render_settings_form();
        }
        return $this->controller_helper->render('installer_convert.html', 'STAGE_SETTINGS', true);
    }