$url = \TYPO3\CMS\Backend\Utility\BackendUtility::getModuleUrl('my_module'); echo 'My Module';
$action = 'edit'; $url = \TYPO3\CMS\Backend\Utility\BackendUtility::getModuleUrl('my_module', ['action' => $action]); header('Location: '.$url);Package library: TYPO3\CMS\Backend\Utility\BackendUtility