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<?php function g() { foreach (["a","b","c"] as $val) { yield $val; } var_dump(yield); var_dump(yield); var_dump(yield); } $g = g(); foreach ($g as $i => $v) { $g->send($i); var_dump($v); }
Output for git.master, git.master_jit, rfc.property-hooks
string(1) "a" string(1) "c" NULL int(4) NULL NULL

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