Newsgroups: php.internals
Path: news.php.net
Xref: news.php.net php.internals:98263
Mailing-List: contact internals-help@lists.php.net; run by ezmlm
Received-SPF: pass (pb1.pair.com: domain gmail.com designates 74.125.82.50 as permitted sender)
Sender: Michael Wallner <mike.php.net@gmail.com>
To: =?UTF-8?Q?Micha=c5=82_Brzuchalski?= <michal@brzuchalski.com>
References: <CAAn=CzU3kB-GWPTYk1L+mtkDK9yjfNOAb2eHfFm4bdRVbZiUFg@mail.gmail.com>
 <CAAn=CzXaa8BrZ4UA3idLQJiBXnViBTjsDeHi2iOMBayY6wVO0g@mail.gmail.com>
 <15caa5d8-07d1-d76e-974a-c0bb0c4e8126@php.net>
 <CABdc3WoB1c8s_TYbOsjHDOT=d5kwPHOoGOL9_QryhpKuOO0RoA@mail.gmail.com>
Cc: Alex Bowers <bowersbros@gmail.com>, PHP <internals@lists.php.net>
Message-ID: <6f8a89b6-efde-e6d7-8c46-3d65b2bf2f71@php.net>
Date: Wed, 8 Feb 2017 15:10:10 +0100
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101
 Thunderbird/45.6.0
MIME-Version: 1.0
In-Reply-To: <CABdc3WoB1c8s_TYbOsjHDOT=d5kwPHOoGOL9_QryhpKuOO0RoA@mail.gmail.com>
Content-Type: multipart/signed; micalg=pgp-sha512;
 protocol="application/pgp-signature";
 boundary="vAs6jm8hA9UMxer4wENPe3GgjqfIx3hd5"
Subject: Re: [PHP-DEV] [Discussion] FFI in PHP
From: mike@php.net (Michael Wallner)

--vAs6jm8hA9UMxer4wENPe3GgjqfIx3hd5
Content-Type: multipart/mixed; boundary="bAen2GpclJfn70vrRapk6p229FNUp3H9i";
 protected-headers="v1"
From: Michael Wallner <mike@php.net>
To: =?UTF-8?Q?Micha=c5=82_Brzuchalski?= <michal@brzuchalski.com>
Cc: Alex Bowers <bowersbros@gmail.com>, PHP <internals@lists.php.net>
Message-ID: <6f8a89b6-efde-e6d7-8c46-3d65b2bf2f71@php.net>
Subject: Re: [PHP-DEV] [Discussion] FFI in PHP
References: <CAAn=CzU3kB-GWPTYk1L+mtkDK9yjfNOAb2eHfFm4bdRVbZiUFg@mail.gmail.com>
 <CAAn=CzXaa8BrZ4UA3idLQJiBXnViBTjsDeHi2iOMBayY6wVO0g@mail.gmail.com>
 <15caa5d8-07d1-d76e-974a-c0bb0c4e8126@php.net>
 <CABdc3WoB1c8s_TYbOsjHDOT=d5kwPHOoGOL9_QryhpKuOO0RoA@mail.gmail.com>
In-Reply-To: <CABdc3WoB1c8s_TYbOsjHDOT=d5kwPHOoGOL9_QryhpKuOO0RoA@mail.gmail.com>

--bAen2GpclJfn70vrRapk6p229FNUp3H9i
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: quoted-printable

On 08/02/17 14:54, Micha=C5=82 Brzuchalski wrote:
> 2017-02-08 12:51 GMT+01:00 Michael Wallner <mike@php.net>:
>=20
>>
>> ```
>> // https://github.com/m6w6/ext-psi#implementations
>> function math\add(int $a, int $b) : int {
>>         let a =3D intval($a);
>>         let b =3D intval($b);
>>         return to_int(add);
>> }
>> ```
>>
>=20
> What is the purpose of `intval` call if both variables were declared as=
 int
> already?
> Also what to_int stands for if we already declared int return type?
>=20

While those type casts might seem superfluous for simple functions,
marshalling between PHP and C quickly becomes complicated and requiring
explicit casts just reduces the possibility of tripping points even if
the types match on both sides. Omitting them wouldn't change anything
internally, but just bloat the parser.

--=20
Regards,
Mike


--bAen2GpclJfn70vrRapk6p229FNUp3H9i--

--vAs6jm8hA9UMxer4wENPe3GgjqfIx3hd5
Content-Type: application/pgp-signature; name="signature.asc"
Content-Description: OpenPGP digital signature
Content-Disposition: attachment; filename="signature.asc"

-----BEGIN PGP SIGNATURE-----

iQEzBAEBCgAdFiEEHsPHHd1jWDGjN9aESA4+FLCkx8cFAlibJsIACgkQSA4+FLCk
x8dV/Qf/SKOwp1BPfIFHnw2K7o8qV07Uhb6oYfZslPbQURZrJwBgGKGQ4VtLQtSW
K8jD2+dyShb0tfA5E58leSJHL4te+hs9inZiKMHmCm4Y45c921gAgr3vE0LwijPp
7VzKxEejdXd/hTzGHFPR76aZqszHmiqLNWajAN7GXMilSJwaCzqtI91lczsdcgg8
xPBZQsVychnUlLvmGLNVeyoHJ8dufOVicroOD/3AzaMqVRhoLwR5Om2CrHAAxY0g
rv8FQq/G1videJl9lUthfGmIE3HkONM0aRkMBV5rYcYRC5gQjonF2ZT3Fdvvnmto
5L4shaFigX5QmZDf2hs1Piu1Jn5DeA==
=KNsR
-----END PGP SIGNATURE-----

--vAs6jm8hA9UMxer4wENPe3GgjqfIx3hd5--