Re: Beginner Tutorials for using CLASSES in PHP4

On 10/10/07, Robert Cummings <robert@interjinn.com> wrote: > > On Wed, 2007-10-10 at 22:15 -0400, Nathan Nobbe wrote: > > well i have to say i dont really see the difference between an > > implicit and explicit interface. > > > > the example you gave looks like it works just like the example i gave. > > > > in your example the check for the function is performed at runtime. > > in the example i gave the check for the interface is performed at > > runtime. > > Interfaces are checked at parse time. I'm very sure you need to include > the interface description before you can implement it. That makes it > explicit. My example doesn't need any interface description, the > interface of "wiggle()" is implicit. > > > the only difference is that in mine php does the check and in yours > > method_exists() > > does the check. > > I only put that there for fun. I could have skipped the check entirely. > Then it would be expected that the wiggle() method existed. If the > method doesn't exist then at run time the script will stop-- fortunately > with a fatal error :) i suppose the same could be done with the interface construct as well; simply remove the type hinting with the name of the interface and the call becomes implicit. -nathan