(PHP 5 >= 5.3.0, PHP 7)
RecursiveTreeIterator::getPostfix — Get the postfix
Gets the string to place after the current element.
锟斤拷锟斤拷锟斤拷锟斤拷未锟斤拷写锟侥碉拷锟斤拷锟斤拷锟叫诧拷锟斤拷锟叫憋拷
锟剿猴拷锟斤拷没锟叫诧拷锟斤拷锟斤拷
Returns the string to place after the current element.