Please document this method. I have found a use for it and would love to better understand how it works. TY : )
(PHP 5, PHP 7)
RecursiveIteratorIterator::getSubIterator — The current active sub iterator
本函数还未编写文档，仅有参数列表。
level
The current active sub iterator.
Please document this method. I have found a use for it and would love to better understand how it works. TY : )