Re: Concept: "arrayable" pseudo type and \Arrayable interface

I proposed a while back adding a new magic method __toArray that would automatically cast. I'm halfway through writing the RFC (in draft and unpublished). I wonder how that could tie in to this proposal. Or even be a precursor to this. Sent from my iPhone > On Nov 17, 2019, at 11:10 AM, Ken Stanley <dohpaz@gmail.com> wrote: > > On Sun, Nov 17, 2019 at 9:42 AM Aimeos | Norbert Sendetzky < > norbert@aimeos.com> wrote: > >> Since PHP 7.1 there's the "iterable" pseudo type hint that matches >> "array" and "Traversable". >> >> PHP frameworks would profit from support of an "arrayable" pseudo type >> hint that matches "array" and all objects that implements >> "Traversable", >> "ArrayAccess" and "Countable". >> >> Thus, we could pass arrays or all objects that behave like arrays to >> methods and do: >> >> function useArrayable( arrayable $arg ) : arrayable { >> $cnt = count( $arg ); >> $value = $arg['key']; >> foreach( $arg as $key => $entry ) { ... } >> return $arg; >> } >> >> It would be useful to implement an Arrayable interface too: >> >> interface Arrayable extends \Iterator, \Countable, \ArrayAccess >> { >> public function toArray() : array; >> } >> >> Then, we can use array like objects: >> >> class Test implements \Arrayable >> { >> // ... >> } >> >> $arrayable = new Test(); >> $arrayable['key'] = $value; >> $arrayable = useArrayable( $arrayable ); >> >> And if necessary, we can convert them to native arrays: >> >> if( $arrayable instanceof \Arrayable ) { >> $arrayable = $arrayable->toArray(); >> } >> >> -- >> PHP Internals - PHP Runtime Development Mailing List >> To unsubscribe, visit: http://www.php.net/unsub.php > > > Also the toArray() should be called when an Arrayable is cast to an array: > (array)$arrayable. > > And shouldn’t the toArray match the same naming semantics as __toString? > -- > "Do not go gentle into that good night. Rage, rage against the dying of the > light." — Dylan Thomas