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run code in 150+ php & hhvm versions
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<?php $dataset = array(0 => "one", 1 => "two"); reset($dataset); while ($a = current($dataset)) { var_dump($a); next($dataset); if ($a == "one") { unset($dataset[0]); } } var_dump($dataset);
Output for 4.3.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
string(3) "one" string(3) "two" array(1) { [1]=> string(3) "two" }
Output for hhvm-3.10.0

Process exited with code 153.