Online PHP editor | output for bQJkN

@ 2020-08-23T21:15:35Z

<?php

function generator_to_array(\Generator $generator) {
    $yielded = iterator_to_array($generator);
    return [
        'yielded' => $yielded,
        'returned' => $generator->getReturn(),
    ];
}

class test
{
    private $whatever = false;

    public function __construct()
    {
        $a = generator_to_array($this->firstIterator());
        $b = generator_to_array($this->secondIterator($this->firstIterator()));
        $c = generator_to_array($this->thirdIterator($this->firstIterator()));

        $this->whatever = true;
        $d = generator_to_array($this->firstIterator());
        $e = generator_to_array($this->secondIterator($this->firstIterator()));
        $f = generator_to_array($this->thirdIterator($this->firstIterator()));

        var_dump([$a, $b, $c, $d, $e, $f]);
    }

    public function firstIterator(): \Iterator
    {
        yield 'a'=> 1;
        yield 'b'=> 2;
        yield 'c'=> 3;
    }

    public function secondIterator(\Iterator $first): \Iterator
    {
        if ($this->whatever === true)
        {
            return $first;
        }

        foreach($first as $key=>$value)
        {
            yield $key => $value * $value;
        }
    }

    public function thirdIterator(\Iterator $first): \Iterator
    {
        if ($this->whatever === true)
        {
            return $first;
        }

        return $this->thirdSubIterator($first);
    }

    public function thirdSubIterator(\Iterator $first): \Iterator
    {
        foreach($first as $key=>$value)
        {
            yield $key => $value * $value;
        }
    }
}

new test();

Output for 8.4.1 - 8.4.12: array(6) { [0]=> array(2) { ["yielded"]=> array(3) { ["a"]=> int(1) ["b"]=> int(2) ["c"]=> int(3) } ["returned"]=> NULL } [1]=> array(2) { ["yielded"]=> array(3) { ["a"]=> int(1) ["b"]=> int(4) ["c"]=> int(9) } ["returned"]=> NULL } [2]=> array(2) { ["yielded"]=> array(3) { ["a"]=> int(1) ["b"]=> int(4) ["c"]=> int(9) } ["returned"]=> NULL } [3]=> array(2) { ["yielded"]=> array(3) { ["a"]=> int(1) ["b"]=> int(2) ["c"]=> int(3) } ["returned"]=> NULL } [4]=> array(2) { ["yielded"]=> array(0) { } ["returned"]=> object(Generator)#4 (1) { ["function"]=> string(19) "test::firstIterator" } } [5]=> array(2) { ["yielded"]=> array(3) { ["a"]=> int(1) ["b"]=> int(2) ["c"]=> int(3) } ["returned"]=> NULL } }
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25: array(6) { [0]=> array(2) { ["yielded"]=> array(3) { ["a"]=> int(1) ["b"]=> int(2) ["c"]=> int(3) } ["returned"]=> NULL } [1]=> array(2) { ["yielded"]=> array(3) { ["a"]=> int(1) ["b"]=> int(4) ["c"]=> int(9) } ["returned"]=> NULL } [2]=> array(2) { ["yielded"]=> array(3) { ["a"]=> int(1) ["b"]=> int(4) ["c"]=> int(9) } ["returned"]=> NULL } [3]=> array(2) { ["yielded"]=> array(3) { ["a"]=> int(1) ["b"]=> int(2) ["c"]=> int(3) } ["returned"]=> NULL } [4]=> array(2) { ["yielded"]=> array(0) { } ["returned"]=> object(Generator)#4 (0) { } } [5]=> array(2) { ["yielded"]=> array(3) { ["a"]=> int(1) ["b"]=> int(2) ["c"]=> int(3) } ["returned"]=> NULL } }

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