On Thu, Apr 28, 2011 at 02:43:36AM -0700, Rasmus Lerdorf wrote:
> > function array foo() { .... }
> >
> > $ret = foo();
> > foreach($ret as $val)
> > ....
>
> I don't see this being useful at all. All you are doing is duplicating a
> runtime warning. We can't possibly know at compile-time whether this
> return value is an array or not, so there is no compile-time benefit.
The check is not done where foo() is called but within foo() itself, to ensure
that it only returns an array.
There will also be advantages for HipHop which can afford to spend the time to
do static analysis of code -- I know that HipHop is not your baby
but you now need to recognise that there is more than one PHP implementation
and features that may not had much advantage with Zend may be useful elsewhere.
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