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

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