Hi,
in my every day experience, using custom DTO classes and different API,
I often write code to instantiate my objects from associative arrays.
What are your thoughts on introduce the `(AnyType)` cast to instantiate
objects from associative array (or object properties also)?
In my proposal, if AnyType implements __set_state(), casting should be
syntactic sugar for:
AnyType::_set_state((array) $data)
just for (useless) example, consider DateTime or DateTimeImmutable (both
have __set_state() implementation); when applied to objects of that
type, we can write:
$dt = new DateTime();
$dtArray = (array) $dt; // 3 elements array
$copyOfDt = (DateTime) $dtArray; // or simply $copyOfDt =
(DateTime) $dt;
In case AnyType does not implements __set_state(), casting should create
a new instance, assigning values to properties, taken from array values
with corresponding key (in a similar way class objects are created when
row is fetched from database specifying PDO_FETCH_CLASS) eventually
invoking __set() magic method for properties not declared;
In this scenario,
(object) ['one' => 1, 'two' => 2]
and
(StdClass) ['one' => 1, 'two' => 2]
do exactly the same work.
Reasons:
- clear code
- array to object conversion (casting) would be the simmetrical
counterpart of object to array conversion
Thanks,
Gianni
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