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<?php function ping_pong() { for ($i = 1; $i <= 10; $i++) { $val = (yield $i); // if ( !== null) // { echo 'ping: ' . $val . PHP_EOL; // } } } $generator = ping_pong(); foreach ($generator as $value) { echo 'ite:' . $value . PHP_EOL; echo 'pong: ' . $generator->send($value) . PHP_EOL; }
Output for git.master, git.master_jit, rfc.property-hooks
ite:1 ping: 1 pong: 2 ping: ite:3 ping: 3 pong: 4 ping: ite:5 ping: 5 pong: 6 ping: ite:7 ping: 7 pong: 8 ping: ite:9 ping: 9 pong: 10 ping:

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