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In-Reply-To: <1ae611cb-b077-3db0-3237-c7ffa1c6e745@ralphschindler.com>
Date: Thu, 1 Jul 2021 18:30:52 +0200
Cc: PHP internals <internals@lists.php.net>
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Message-ID: <51A66F1F-F7AC-4D2A-A142-6BAB4471721C@gmail.com>
References: <1ae611cb-b077-3db0-3237-c7ffa1c6e745@ralphschindler.com>
To: Ralph Schindler <ralph@ralphschindler.com>
Subject: Re: [PHP-DEV] [Proposal] call_user_func_map(): flexible named
 parameter mapping for call_user_func*
From: claude.pache@gmail.com (Claude Pache)



> Le 27 juin 2021 =C3=A0 16:39, Ralph Schindler =
<ralph@ralphschindler.com> a =C3=A9crit :
>=20
> The short proposal:
>=20
>=20
> Make a variation of this work (notice parameter order and 'b' is goes =
unused):
>=20
>    call_user_func_map(
>      fn ($c, $a) =3D> var_dump($a, $c),
>      [
>        'a' =3D> 'the a value',
>        'b' =3D> 'the b value',
>        'c' =3D> 'the c value'
>      ]
>    );
>=20
>    // string(11) "the a value"
>    // string(11) "the c value"
>=20
>=20

Hi,

If you want to ignore arguments in excess, your function may have a rest =
parameter collecting them. The following will run without error:

```php
function foo($c, $a, ...$unused) {
    var_dump($a, $c);
}

$args =3D [
    'a' =3D> 'the a value'
  , 'b' =3D> 'the b value'
  , 'c' =3D> 'the c value'
];

foo(...$args);
```

=E2=80=94Claude