set_error_handler help

Hi guys, I'm trying some custom error handling functions in order to get emails when fatal errors come up in my production website. The thing is, I went to phpclasses and there was a good one, but it was a class. I'm very slow today, so I could not figure out how to get it working. So, I just removed it from the classs and used the function part. Which worked, but it got me confused: Is there any way to use a class to handle errors? I've tried some stuff like set_error_handler("Error_Handler::logError" and such, but with no luck. Any hints? Thanks!