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<?php function naturalIntegers() { $i = 0; while (true) { yield $i++; } } foreach(naturalIntegers() as $i) { if ($i > 10) { break; } print $i.PHP_EOL; } print "finished\n";
Output for git.master_jit, git.master
0 1 2 3 4 5 6 7 8 9 10 finished

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