Online PHP editor | output for 3oSO7

<?php function gen1($a = 0) { $i = 0; while($i < 5) { yield $a; $a = $a + 1; $i = $i + 1; } return $a * 5; } function yf() { $bs = yield from []; echo "Done with the garbage iterator. Should return nothing. Actual return value below:\n"; var_dump($bs); $som = yield from [1, 2, 3]; echo "Done with the iterator. Result was $som\n"; $res = yield from gen1(); echo "Done with the first generator. Result was $res\n"; $oth = yield from gen1($res); echo "Done with the second generator. Result was $oth\n"; return $oth; } $g = yf(); foreach($g as $val) { var_dump($val); } var_dump($g->getReturn());