(PHP 5 >= 5.1.0, PHP 7, PHP 8)
RecursiveCachingIterator::getChildren — Return the inner iterator's children as a RecursiveCachingIterator
本函數還未編寫(xiě)文檔，僅有參數列表。
此函數沒(méi)有參數。
The inner iterator's children, as a RecursiveCachingIterator; or null if there is no children.