note 34837 deleted from keyword.parent by didou

Note Submitter: sibaz at sibaz.com ---- if C# is like C++, then you've misunderstood the use of public/private variables. Everything in PHP is public, so a variable defined and used in a parent class is changed and reused by a child class. Private variables in a parent class are only avaliable to functions in that parent class. Any 'redeclaration' of variables with the same name in child classes is completely bogus. In PHP a::a and b::a are the same variable and so when a::display uses it, it gets the latest value (ie 9). in C++ (I'm assuming its the same as C# in this case), because a::a is private, b::a is a new separate variable. a::display doesn't know b::a exists, so rightly ignores it.