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Subject: Re: [PHP-DEV] [RFC] [DISCUSSION] Scalar Pseudo-type
From: sebastian@php.net (Sebastian Bergmann)

Am 29.12.2017 um 16:37 schrieb Nikita Popov:
> Having an explicit number type also goes well with an explicit number cast.
> PHP internally has a notion of a number cast (which is the basis for
> arithmetic operations), but currently does not expose it. As such, number
> casts currently have to be simulated using workarounds like +$x.

PHP also already has is_numeric().