The RecursiveIterator interface

(PHP 5 >= 5.1.0, PHP 7)

简介

Classes implementing RecursiveIterator can be used to iterate over iterators recursively.

RecursiveIterator extends Iterator {

/* 方法 */

public hasChildren ( ) : bool

/* 继承的方法 */

abstract public Iterator::current ( ) : mixed

abstract public Iterator::key ( ) : scalar

abstract public Iterator::next ( ) : void

abstract public Iterator::rewind ( ) : void

abstract public Iterator::valid ( ) : bool

}