note 19860 added to keyword.paamayim-nekudotayim

Note that if you have two classes, 'foo' and 'bar', and a function in foo called with $instance_of_foo->func() calls bar::func2(), $this will be defined in func2, and it will point at an object of class foo. In fact, you can redefine $this to point to an object of any class before calling bar::func2() to have $this to be a reference to that object. This means that you can't have functions that can be called either as static (::) or member(->), since you won't be able to tell the difference. This is a quite unfortunate consequence of the combination of references not containing any type information and it not being possible to call an explicitly chosen base class member function (that is, if x extends y there's no clean way to call y::f() on an object of class x (The unclean way is to assign $this to $instance_of_x, call y::f(), and reset $this to its old value.)). -- http://www.php.net/manual/en/keyword.paamayim-nekudotayim.php http://master.php.net/manage/user-notes.php?action=edit+19860 http://master.php.net/manage/user-notes.php?action=delete+19860 http://master.php.net/manage/user-notes.php?action=reject+19860