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Date: Wed, 22 Apr 2015 10:41:59 +0200
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Subject: request priviledges to create an RFC or at least submit a suggestion
From: dgoosens@gmail.com (Dmitri Goosens)

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Hi PHP-fellows
or whoever reads this=E2=80=A6

I=E2=80=99m a Belgian PHP addict and feel I=E2=80=99ve got a suggestion tha=
t might be of
interest for PHP7.
I=E2=80=99d more than glad to write it down completely in an RFC if you gra=
nt me
access, otherwise, maybe someone can do it.
My username is *dgoosens*.

I feel, a natural evolution of the scalar type hinting would be the
possibility to type hint arrays as well=E2=80=A6
That means, not the array itself, obviously, but the items that are in the
array.

Right now we have

array $foo =3D array();

What I=E2=80=99d like to see is something like this:

string[] $foo =3D array(); // an array that can only contain
stringsarray[string[]] $foo =3D array(); // an array that can only
contain arrays that contain stringsBar[] $foo =3D array(); // an array
that can only contain instances of Bar

There probably are some side effects to this and maybe I=E2=80=99m not awar=
e enough
about PHP=E2=80=99s internals, but I think this implementation would have a=
 series
of benefits=E2=80=A6

*1. function attributes type hinting*

public function bar(string[] $foo =3D array()){
    /*    No need to validate the data in $foo as we already know that
it will only contain strings    */}

*2. class attributes*

class foo
{
    public $foo =3D string[];
}
$bar =3D new foo();$bar->foo[] =3D 'only strings are allowed here';

etc. etc.

I feel this would be a very nice improvement in PHP=E2=80=A6

Thanks

dgoosens

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