一个非常优雅的解决方案是使用
LimitIterator：
$xml = simplexml_load_string($rawxml);// can be combined into one line$ids = $xml->xpath('id'); // we have an array here$idIterator = new ArrayIterator($ids);$limitIterator = new LimitIterator($idIterator, $offset, $count);foreach($limitIterator as $value) { // ...}// or more concise$xml = simplexml_load_string($rawxml);$ids = new LimitIterator(new ArrayIterator($xml->xpath('id')), $offset, $count);foreach($ids as $value) { // ...}
