Online PHP editor | refs for vbbZM

<?php function printer() { for ($i = 0; $i < 10; $i++) { $string = (yield $i); var_dump($string); } } $printer = printer(); echo 'current: '; var_dump($printer->current()); $printer->send('Hello world!'); echo 'current: '; var_dump($printer->current()); $printer->next(); echo 'current: '; var_dump($printer->current()); $printer->send('Bye world!'); echo 'current: '; var_dump($printer->current());