private function injectRouteParamterIntoServicesFile($city): void { $servicesYmlPath = '/home/osboxes/PhpstormProjects/symfony/testaufgabe/app/config/services.yml'; $servicesArrayRepr = Yaml::parseFile($servicesYmlPath); $servicesArrayRepr['parameters']['city'] = $city; $ymlRepr = Yaml::dump($servicesArrayRepr,2); file_put_contents($servicesYmlPath, $ymlRepr); }