RE: [PHP-DEV] RfC: rethink OO inheritance strictness

On Fri, 21 Jul 2006, Soenke Ruempler wrote: > Derick Rethans <mailto:derick@php.net> wrote on Friday, > July 21, 2006 > 11:31 AM: > > > It's quite a different thing in C++ as there you have method > > overloading which PHP doesn't have. Therefore your argument doesn't > > Exactly the point. It's parameter polymorphism in C++/Java. > > > hold here as they are simply *two different* methods, and not an > > overriden one. In your code that uses the derived class you can still > > use both methods (one without, and the one with parameters). > > To be compatible, the only thing you have to do is adding standard > values to derived methods' parameters: > > $ php -d"error_reporting=8191" -r 'class c{function f(){}} class d > extends c{function f($a){}}'; > > Strict Standards: Declaration of d::f() should be compatible with that > of c::f() in Command line code on line 2 > > $ php -d"error_reporting=8191" -r 'class c{function f(){}} class d > extends c{function f($a = null){}}'; > $ [no error] > > This behaviour makes sense to me. Yes... and this is how C++ does it. Derick