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@ 2021-04-23T18:19:16Z

<?php

class FooCls {}

function foo(): iterable
{
    yield new FooCls => 1;
    yield new FooCls => 2;
    yield new FooCls => 3;
    yield new FooCls => 4;
}

$iterator = foo();
assert($iterator instanceof Iterator);

var_dump($iterator->key());

Output
Performance
VLD
References
Branches

assert: documentation ( source)
var_dump: documentation ( source)

preferences:dark modelive previewkey bindings

152.42 ms | 405 KiB | 5 Q