## Iterables

Iterable is a built-in compile time type alias for `array|Traversable`. From its introduction in PHP 7.1.0 and prior to PHP 8.2.0, iterable was a built-in pseudo-type that acted as the aforementioned type alias and can be used as a type declaration. An iterable type can be used in `foreach` and with yield from within a generator.

> Note:

> Functions declaring iterable as a return type may also be generators.

> Example #1 Iterable generator return type example

>     <?php

>     function gen(): iterable {
>         yield 1;
>         yield 2;
>         yield 3;
>     }

>     foreach(gen() as $value) {
>         echo $value, "\n";
>     }
>     ?>

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