writeNewEnvironmentToEnvFile example

return;
        }

        if (! in_array($env, self::$knownTypes, true)) {
            CLI::error(sprintf('Invalid environment type "%s". Expected one of "%s".', $env, implode('" and "', self::$knownTypes)), 'light_gray', 'red');
            CLI::newLine();

            return;
        }

        if (! $this->writeNewEnvironmentToEnvFile($env)) {
            CLI::error('Error in writing new environment to .env file.', 'light_gray', 'red');
            CLI::newLine();

            return;
        }

        // force DotEnv to reload the new environment         // however we cannot redefine the ENVIRONMENT constant         putenv('CI_ENVIRONMENT');
        unset($_ENV['CI_ENVIRONMENT'], $_SERVER['CI_ENVIRONMENT']);
        (new DotEnv(ROOTPATH))->load();