1 week ago, IIS come out PHP Manager to allow IIS user to easily manage their PHP setting easily through IIS with interface.
With PHP Manager, you are able to do the following thing.
1. Change PHP Version.
2. Configure error_reporting easily.
3. Set runtime limits.
4. Manage all setting with GUI interface.
5. Enable extension easily.
With PHP Manager, it allow you to enable the error log easily as well.