Re: RE: [SMARTY] php5 Iterators.

boots wrote:

> FWIW, is_a is not available prior to PHP 4.2 so we would actually need
> to implement it. The Pear compat library has what appears to be an
> adequate BC implementation:
> http://cvs.php.net/co.php/pear/PHP_Compat/Compat/Function/is_a.php?r=1.15
>
>  
In fact we can just use function_exists.

> I can see why people want to overload foreach for object support under
> PHP5 
> but I wonder if it might be a better idea to introduce a new tag
> (say, forevery or onevery or something) even if just to keep the amount
> of BC headaches and pitfalls to a minimum.
>
>  
-1.

> xo boots
>
> --- Boris Bezrukov <lovchy@xxxxxxx> wrote:
>
>  
>
> > George Miroshnikov wrote:
> >
> >    
> >
> > > Hello David,
> > >
> > > What about using instanceof operator?
> > > It would raise parser error on php4, but my thought is all php5 code
> > > could be (temporarily?) moved into separate plugin that will be
> > > conditionally included if Smarty is being run on php5 box.
> > > Or maybe use runtime functions to avoid parser error.
> > >
> > > I'm wondering, if is_a() is forward-compatible with interfaces?
> > >
> > >      
> > Yes, it is. And it should be used.
> >
> >    
> >
> > > Monday, January 17, 2005, 10:45:01 PM, you wrote:
> > >
> > > DZ> Jochem,
> > >
> > > DZ> Someone posted a patch for this "problem" a couple of days ago
> > >      
> > on the
> >    
> >
> > > DZ> Developers list (this is where this discussion belongs to
> > >      
> > anyway, so I'm
> >    
> >
> > > DZ> crossposting there).
> > >
> > > DZ> I totally agree with you, we need the possibility to use
> > >      
> > iterators. The
> >    
> >
> > > DZ> point is we need to find a clean way to implement this without
> > >      
> > breaking BC.
> >    
> >
> > > DZ> If we just do an is_object() check, we will break BC because you
> > >      
> > actually
> >    
> >
> > > DZ> CAN loop over objects using foreach, it will return the property
> > >      
> > values (and
> >    
> >
> > > DZ> their names as keys). We cannot remove the array casting either
> > >      
> > because some
> >    
> >
> > > DZ> people might rely on the fact that their int, string, whatever
> > >      
> > gets
> >    
> >
> > > DZ> converted to a one-value array and they can loop over them.
> > >      
>
>  
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