Exception declares protected properties that may be used in child classes
directly.
This is not possible with interface.
Thanks. Dmitry.
On Thu, Feb 19, 2015 at 6:31 PM, Dan Ackroyd <dan...@basereality.com> wrote:
> On 19 February 2015 at 09:54, Dmitry Stogov <dmi...@zend.com> wrote:
>
> > I think we may introduce the following hierarchy
> > the existing code that caught Exception is going to be unaffected.
>
> We could do that. But it's not obviously correct, and ought to be
> justified as to why it would be the correct thing to do.
>
> The problem of people needing to catch every type of exception could
> also be solved by using a common interface.
>
> class EngineException implements ExceptionInterface {}
> class Exception implements ExceptionInterface {}
>
> try {
> foo();
> }
> catch(ExceptionInterface $exception) {
> //catches everything.
> }
>
> This avoids a requirement for all exceptions to extend from a common
> base class. The interface for exceptions would be the current
> Exception classes methods, excluding the constructor.
>
> > We thought about "Throwable" or "Catchable" interface, but this change
> > would require more changes and will make more BC breaks.
>
> Please can you explain what those problems are?
>
>
> cheers
> Dan
>
