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run code in 150+ php & hhvm versions
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<?php $dataset = array("a" => "one", "b" => "two"); while ($a = next($dataset)) { var_dump($a); }
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
string(3) "two"