Newsgroups: php.internals
Path: news.php.net
Xref: news.php.net php.internals:116479
Message-ID: <99cc5fab-42ff-f865-cdfc-8942557c86b8@gmx.de>
Date: Mon, 22 Nov 2021 19:18:29 +0100
MIME-Version: 1.0
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:91.0)
 Gecko/20100101 Thunderbird/91.3.0
To: internals@lists.php.net
Content-Language: de-DE
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: quoted-printable
Subject: PHP 8.2 proposal: "match", allow "default" as conditional_expression,
 e.g. 'en_US', 'en_GB', default => loadDefaults()
From: syntheme@gmx.de (Andreas)

Hi internals,

This is a proposal to allow to append the `default` pattern by comma to
the end of the last match branch. (Like a conditional_expression)

This allows to re-use the return_expression if required and avoids code
duplication.

PROPOSAL: PHP 8.2

<?php
return match ($locale) {
 =C2=A0=C2=A0=C2=A0 'de_DE', 'de_CH', 'de_AT' =3D> loadGermanLanguageSetti=
ngs(),
 =C2=A0=C2=A0=C2=A0 'en_US', 'en_GB', default =3D> loadDefaultLanguageSett=
ings(),
};
?>

// PHP 8.1 (Current implementation works like before)

<?php
return match ($locale) {
 =C2=A0=C2=A0=C2=A0 'de_DE', 'de_CH', 'de_AT' =3D> loadGermanLanguageSetti=
ngs(),
 =C2=A0=C2=A0=C2=A0 'en_US', 'en_GB' =3D> loadDefaultLanguageSettings(),
 =C2=A0=C2=A0=C2=A0 default =3D> loadDefaultLanguageSettings(),
};
?>

The `default` pattern must be the last item in the last expression branch.

Thanks,
Andreas