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<?php $array = array(1, 2); $it = new ArrayIterator($array); while ($it->valid()) { echo $it->current(); $it->next(); } $it->append(3); echo $it->valid() ? $it->current() : "not valid"; var_dump($array);
Output for git.master, git.master_jit, rfc.property-hooks
123array(2) { [0]=> int(1) [1]=> int(2) }

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