<?php function gen_one_to_three() { for ($i = 1; $i <= 3; $i++) { // Note that $i is preserved between yields. yield $i; } } $on = gen_one_to_three(); $two = gen_one_to_three(); $three = gen_one_to_three(); $merged = [$on, $two, $three]; foreach($merged as $g) { foreach($g as $m) { var_dump($m); } }
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