Hello Stanislav, Monday, May 19, 2008, 2:13:14 AM, you wrote:
> Hi! >> As much as I agree on the interface part, changing my sentence from >> containing 'interface' to 'protocol' makes it even a bug today. And that >> by the way was the purpose of my mail. > I think it is not right to call it a "bug", since it works exactly as it > was intended and designed to work. It's not like somebody just missed a > check here or forgot an if or something. > Now, I understand that you want to change it, and have a good reason for > it. However, it should be understood that this change has consequences - > unset() stops being the operator it was before - i.e. operator > undefining the argument variable, removing it from the respective symbol > table - and starts being operator that sometimes undefines variable and > sometimes sets it to null. Which has more consequences - e.g., you can > not know what would be the effect of unset unless you know the initial > declaration of the class. It also means PHP has now two kinds of > variables - unsettable and not unsettable, and there's no way for > developer to know which one is which without inspecting the source code. > Unless, of course, you want to prohibit unsetting object variables > altogether. Which would be even bigger change, since not all object vars > are API parts - most of them are not. > My opinion is that adding a bit of OO purism in this case does not > justify changing the way one of the basic language constructs behaves in > a way that may lead to unforeseen and unwanted consequences. I think > there's a limit to which the language should restrict the developer, and > basing on PHP history and build as it is today I would say changing the > way how unset() works to restrict developers from potentially writing OO > code which is not nice goes beyond what language like PHP should do. All right, which is why I didn't file a bug report or ask anyone to do it. To me the thing is ok as reflection shows it anyway. The only thing I don't like is making it possible to get a E_NOTICE on a well declared property. Best regards, Marcus -- PHP Internals - PHP Runtime Development Mailing List To unsubscribe, visit: http://www.php.net/unsub.php
