Not multiple inheritance. Inheritance. Not multiple orgasm. Intercourse. On 03/05/06, Jochem Maas <jochem@xxxxxxxxxxxxx> wrote:
Dave Goodchild wrote: > That is not polymorphism - that is multiple inheritance. Java can't do well that clears up my misuse of the terminology! > that either, and uses a much cleaner method - interfaces. And interfaces > are supported in php5. So php does allow it. Not polymorphism - multiple no Interfaces are not a mechanism for mutliple inheritance (in php) - they don't allow definition of the of the body of functions on the signature. not that I want multiple inheritance - I live on the MI is evil side of town (even when I was calling MI by a different [and incorrect] name). > inheritance. Not multiple inheritance - interfaces. you have fluff on the needle. (record is stuck) ;-) > > On 03/05/06, *Jochem Maas* <jochem@xxxxxxxxxxxxx > <mailto:jochem@xxxxxxxxxxxxx>> wrote: > > -------- Original Message -------- > > On Fri, 2006-03-24 at 10:50, Jochem Maas wrote: > > Pham Huu Le Quoc Phuc wrote: > > > I want to execute polymorphism. > > > > > I said (a long time ago): > > > ...BUT the OP didn't ask about polymorphism and php > > doesn't support it at all anyway. > > Rob replied (also quite a long time ago): > > > Ummm, PHP supports polymorphism.. it has at least since PHP 4. > > > > http://whatis.techtarget.com/definition/0,,sid9_gci212803,00.html > > > > 1 and 3 in the above link are supported. Number 2 is not, > however, that > > PHP supports 1 - but I have never heard of dynamic typing referred to as > polymorphism. > > PHP doesn't support 2 - in so far as you can't define mabny > functions with > the same name (but different signatures) - this is usually referred > to as > overloading. - granted we have __call() on objects/classes which > allows you > to implement functionality that work like this. > > > is usually referred to as function/method overloading and not so > often > > by polymorphism. Number 3 is the most common type when discussing > > polymorphism. > > in php's case this comes down to the same thing as 1. - dynamic > typing of > variables. > > BUT there is a fourth form of polymorphism - one I would argue if the > most common form when speaking about polymorphism with respect to > programming, > namely the ability to derive a subclass from more than one base > class (simutaneously), > this is something that php cannot do (thank <deity>). > > > > > Cheers, > > Rob. > > -- > PHP General Mailing List ( http://www.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php > > > > > -- > http://www.web-buddha.co.uk > > dynamic web programming from Reigate, Surrey UK (php, mysql, xhtml, css) > > look out for project karma, our new venture, coming soon!
-- http://www.web-buddha.co.uk dynamic web programming from Reigate, Surrey UK (php, mysql, xhtml, css) look out for project karma, our new venture, coming soon!
