<?php $q = new \SplQueue(); var_dump($q->valid()); // false $q->rewind(); var_dump($q->valid()); // false $q->enqueue('a'); var_dump($q->valid()); // false var_dump($q->count()); // 1 $q->rewind(); var_dump($q->valid()); // true var_dump($q->count()); // 1
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