On Sat, 6 Apr 2019 at 08:53, Guilliam Xavier <guilliam.xav...@gmail.com> wrote:
>
> Hello internals,
>
> David and I would like to open the discussion on our joint RFC:
>
> https://wiki.php.net/rfc/nullable-casting
>
> Mainly, it would enable to use e.g. `(?int)$x` besides `(int)$x`.
>
I'm guessing you don't actually have ths function getIntOrNull() in
your code-base? To help me understand where this would be useful,
could you provide some 'real-world' code where this would be useful?
By the way, this RFC is a special case of something that could be far
more generic. If it was possible to register callbacks to be used when
casting, people could do something like this:
function castToIntOrNull($value)
{
if ($value === null) {
return null;
}
return (int)$int;
}
register_cast_function('?int', 'castToIntOrNull');
$x = (?int)getIntOrNull();
> Additionally, it was requested on the mailing list to consider adding
> support of nullable types to the settype() function,
> e.g. settype($variable, "?int")
Someone probably needs to make an argument for it to be in core,
rather than just saying that it's something that could be done.
cheers
Dan
Ack
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