owncloud / core

		$configName = $configNames[0];

		if (\sizeof($configNames) > 1) {

			if ($input->hasParameterOption('--error-if-not-exists') && !\in_array($configName, $this->systemConfig->getKeys())) {

				$output->writeln('<error>System config ' . \implode(' => ', $configNames) . ' could not be deleted because it did not exist</error>');

				return 1;

			}

			$value = $this->systemConfig->getValue($configName);

			$output->writeln('<info>System config value ' . \implode(' => ', $configNames) . ' deleted</info>');

			return 0;

		} else {

			if ($input->hasParameterOption('--error-if-not-exists') && !\in_array($configName, $this->systemConfig->getKeys())) {

				$output->writeln('<error>System config ' . $configName . ' could not be deleted because it did not exist</error>');

				return 1;

			}

			$this->systemConfig->deleteValue($configName);

			$output->writeln('<info>System config value ' . $configName . ' deleted</info>');