hhvm/hphp/test/slow/array_iterator/442.php

<?php

 function test($a) {  $it = new ArrayIterator($a);  while ($it->valid()) {    var_dump($it->key());    var_dump($it->current());    $it->next();  }}test(array('a' => 'x',           false => 'y',           '1' => false,           null => 'z',           'c' => 'w'));