Am 16.07.2020 um 16:18 schrieb G. P. B. <[email protected]>:
> I've opened voting for the Saner Numeric strings RFC:
> https://wiki.php.net/rfc/saner-numeric-strings
Looking at the BC section I stumbled across
> Code relying on the fact that '' (an empty string) evaluates to 0 for
> arithmetic/bitwise operations.
which is elaborated further down as
> The third reason already emitted an E_WARNING. We considered special-casing
> this to evaluate to 0, but this would be inconsistent with how type
> declarations deal with an empty string, namely throwing a TypeError.
> Therefore a TypeError will also be emitted in this case. The error can be
> avoided by explicitly checking for an empty string and changing it to 0.
but now I'm a bit confused what is meant by "arithmetic/bitwise operations".
I assume this applies only to things like substr("foo", "") but not to
arithmetic *operators* like 42 + "" because that doesn't currently trigger
E_WARNING AFAIK.
Maybe this should be clarified?
Regards,
- Chris
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