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This document uses PHP Chinese website manual Release
(PHP 5 >= 5.4.0)
RecursiveCallbackFilterIterator::getChildren — Return the inner iterator's children contained in a RecursiveCallbackFilterIterator
Fetches the filtered children of the inner iterator.
RecursiveCallbackFilterIterator::hasChildren() should be used to determine if there are children to be fetched.
此函数没有参数。
Returns a RecursiveCallbackFilterIterator containing the children.