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<?php function ping_pong() { for ($i = 1; $i <= 10; $i++) { echo 'a' . $i . PHP_EOL; $val = (yield $i); echo 'b' . $i . PHP_EOL; //echo 'ping: ' . $val . PHP_EOL; } } $generator = ping_pong(); foreach ($generator as $value) { echo 'c' . $i . PHP_EOL; //echo 'pong: ' . $generator->send($value) . PHP_EOL; }
Output for git.master, git.master_jit, rfc.property-hooks
a1 Warning: Undefined variable $i in /in/3t0EW on line 17 c b1 a2 Warning: Undefined variable $i in /in/3t0EW on line 17 c b2 a3 Warning: Undefined variable $i in /in/3t0EW on line 17 c b3 a4 Warning: Undefined variable $i in /in/3t0EW on line 17 c b4 a5 Warning: Undefined variable $i in /in/3t0EW on line 17 c b5 a6 Warning: Undefined variable $i in /in/3t0EW on line 17 c b6 a7 Warning: Undefined variable $i in /in/3t0EW on line 17 c b7 a8 Warning: Undefined variable $i in /in/3t0EW on line 17 c b8 a9 Warning: Undefined variable $i in /in/3t0EW on line 17 c b9 a10 Warning: Undefined variable $i in /in/3t0EW on line 17 c b10

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