Re: Reviving scalar type hints

On Fri, Feb 20, 2015 at 10:48 PM, Robert Stoll <php@tutteli.ch> wrote: > Hi Dmitry and Anthony, > > I was skimming through your conversation about JIT/AOT and that type hints > would allow to optimise few things. > I do not know if you are aware of the following but type hints can be > passed by. Hence neither weak or strict type hints allow to predict the > type (even if only locally): > > function handler($errno, $errstr, $errfile, $errline){ > return true; > } > set_error_handler("handler"); > > class Foo{} > function foo(int $x, Foo $f){ > var_dump($x, $f); > $y = $x; //should be int as well, right? > } > foo(new Foo(), 1); > > Sure, this is something which is hopefully never ever done but anyway, a > language needs to be able to handle all cases. > > right. I know this of course. and this makes type hints useless. > As a side notice, if the exceptions in the engine RFC is accepted, then > this would not be a problem anymore: > https://wiki.php.net/rfc/engine_exceptions_for_php7 > "exceptions in the engine" are going to fix this. Thanks. Dmitry. > > Personally, I would expect that the execution is stopped after the > error_handler was called (after user was able to log etc.) - at least in > strict mode. > > Cheers, > Robert > > >