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Date: Tue, 12 May 2015 22:38:46 +0100
To: PHP internals <internals@lists.php.net>
Message-ID: <EAD024C9-8CE9-427C-9006-0F856AE03E5C@gmail.com>
Subject: Re: [PHP-DEV] is_digits() and digits type
From: rowan.collins@gmail.com (Rowan Collins)

On 12 May 2015 22:32:55 BST, Rowan Collins <rowan.collins@gmail.com> wrote:
>It is already possible to pass around, and type hint for, any class of
>object, so you could for instance have a DatabaseID class. PHP's lack
>of operator overloading makes that less appealing, perhaps, but it
>would work.

Incidentally, it's still not the type hint that's performing validation here - that would go in the constructor of the object, I guess. Rather, the type hint holds the promise that the validation has already happened somewhere else.