On 21/03/2024 15:02, Robert Landers wrote:
I don't think you are getting what I am saying.
$a as int|float
would be an int, float, or thrown exception.
$a as int|float|null
would be an int, float, or null.
I get what you're saying, but I disagree that it's a good idea.
If $a is 'hello', both of those statements should throw exactly the same
error, for exactly the same reason - the input is not compatible with
the type you have specified.
Another way of thinking about is:
$x = $a as null
What do you expect $x to be?
The same as $x inside this function:
function foo(null $x) { var_dump($x); }
foo($a);
Which is null if $a is null, and a TypeError if $a is anything else:
https://3v4l.org/5UR5A
Regards,
--
Rowan Tommins
[IMSoP]
