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Cc: PHP internals <internals@lists.php.net>
Date: Tue, 10 Dec 2013 18:37:12 -0800
To: chobie <chobieee@gmail.com>
Subject: Re: [PHP-DEV] Proposal: ArraySerializable interface
From: mtdowling@gmail.com (Michael Dowling)

I think this would be a great feature. PHP already casts objects to arrays, s=
o being able to customize that behavior would be really helpful.

For example, Guzzle uses a similar interface to handle marshaling objects to=
 associative arrays when serializing requests.

-Michael

> On Dec 10, 2013, at 5:23 PM, chobie <chobieee@gmail.com> wrote:
>=20
> Hi,
>=20
> I've got an idea for adding common way to convert array from object:
> ArraySerializable interface and to allow the changing of existing
> array conversion mechanism.
> As an example of this change, consider the following code-snippet:
>=20
>    $person =3D new StdClass();
>    $person->name =3D "John";
>    $phone =3D new StdClass();
>    $phone->number =3D "12345";
>    $person->phone =3D $phone;
>=20
>    var_dump((array)$person);
>    #array(2) {
>    #  ["name"]=3D>
>    #  string(4) "John"
>    #  ["phone"]=3D>
>    #  object(stdClass)#2 (1) {
>    #    ["number"]=3D>
>    #    string(5) "12345"
>    #  }
>    #}
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> Currently, the implicit object to array conversion does not work
> recursively. This propose changes object to array conversion behaviour
> which implements ArraySerializable interface. specifically
> ArraySerializable::__toArray method overrides current (array) cast.
>=20
>    interface ArraySerializable
>    {
>        /** @return array */
>        public function __toArray();
>    }
>=20
>=20
> ArraySerializable interface provides common way to convert to array
> from object. also impose conversion rule.
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> * __toArray() returning value excepts an array and It values only
> accepts primitive type. (long, double, string and array)
>   * do cast to array operation when the value contains object which
> implements ArraySerializable interface
>  * otherwise, raise RuntimeException.
> * __toArray() method calls implicitly when cast to array from object.
>=20
> This feature improves object to portable format (like json) conversion
> mechanism.
>=20
> rough propose document and patch are here:
> https://gist.github.com/chobie/7890899
>=20
> I want to get feedback about this propose. If I get a good response
> I'll investigate potential issues and improve rfc and patch.
>=20
> Thanks,
> Shuhei
>=20
> --=20
> PHP Internals - PHP Runtime Development Mailing List
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>=20