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<?php function gen() { // TODO: HHVM currently does not support yield from (or yield) as // expressions. As such, this test had to be slightly modified. // The original line was: // var_dump(yield from gen($a + 1)); //$b = yield from gen($a + 1); yield 1; yield 2; var_dump('in the middle of gen'); yield 3; yield 4; } function bar($gen) { // TODO: HHVM currently does not support yield from (or yield) as // expressions. As such, this test had to be slightly modified. // The original line was: // var_dump(yield from gen($a + 1)); yield from $gen; } /* Twice a Generator from bar() using yield from on $gen */ $gen = gen(); $gens[] = bar($gen); $gens[] = bar($gen); do { foreach ($gens as $g) { var_dump($g->current()); $g->next(); } } while($gens[0]->valid()); var_dump($gens[1]->valid());