Let me first make one thing clear: I love using hungarian notation.
When using hungarian notation in PHP, do you then use the "m_" prefix for class variables?
Honestly I don't see the use for this in PHP. Sure, this is useful in languages where you don't use "$this" or "self::", but in PHP you should under any circumstance be aware that it is a class variable.
I do love it, as Salathe said. However, I do have exceptions, such as like accessing variables from outside of a class, like they do in Zend, I prefer $pObject->name to $pObject->szName, although I would prefer to use $pObject->getName().
I do use the m_ format, however, for class variables. You're right in that it should be obvious anyway, and I can't think of any examples, but it's merely down to personal preference. It is a member variable, and so it's labelled as one, as well as its prefix for its actual type.
Many people when posting code on TalkPHP seem to have adopted the Hungarian Notation style. I am not sure why, hopefully it seems logical to some people and helps them. Other people, such as like Salathe, use it cause many people on TalkPHP seem to, I would assume.
The man who comes back through the Door in the Wall will never be quite the same as the man who went out.
Indeed it is very helpful, just the thing with m_ since you'd have to be a total noob to not know whether its a class member or not. I do agree with you on the getName() thing, I like it better than just accessing to variable directly.
I don't use it too often, mainly because I had no clue it existed or had a special meaning/purpose. I do however in class variables use the _ underscore. Don't know why, just kinda picked up on it. Think it was probably for looking around in Joomla code and seeing how they did this and just liked using it.