Re: [SMARTY-DEV] RE: [SMARTY] php5 Iterators.

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 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. xo boots --- Boris Bezrukov <lovchy@php.net> 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.