(PHP 5 >= 5.3.0, PHP 7, PHP 8)
RecursiveTreeIterator::setPrefixPart — Set a part of the prefix
Sets a part of the prefix used in the graphic tree.
本函数还未编写文档，仅有参数列表。
partOne of the RecursiveTreeIterator::PREFIX_* constants.
value
The value to assign to the part of the prefix specified in part.
没有返回值。