Online PHP editor | refs for KJCcZ

<?php function gen1() { $x = yield 1; yield 2; yield $x; } function gen2() { yield from gen1(); yield from gen1(); } function gen3() { yield from gen2(); } $g = gen3(); var_dump($g->current()); $g->send(100); while($g->valid()) { $val = $g->next(); var_dump($val); }