Posted by Jochem Maas on 02/01/05 16:50

Marco Schuler wrote:
> Hi
>
> I found a function declaration in an open source project (in php5) and
> I could not find documantation for this. The function declaration is:
>
> public function registerComp(IComp $comp)
>
> Is it a kind of typecast?

no its a type declaration (is that the correct term). it states
that $comp must be an object of class IComp (or a subclass of it).
if $comp is not anj IComp object you get a fatal error.

this only works for classes. and it does not work in conjunction
with optional params e.g:

public function registerComp(IComp $comp = null) { /*....*/ }



(which IMHO sucks but hey c'est la vie! :-) )


>
> --
> Cheers!
> Marco
>

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