The RecursiveIterator interface

(PHP 5 >= 5.1.0, PHP 7, PHP 8)

简介

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

implements RecursiveIterator extends Iterator {

/* 方法 */

public getChildren ( ) : RecursiveIterator|null

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

}

RecursiveIterator::getChildren — Returns an iterator for the current entry
RecursiveIterator::hasChildren — Returns if an iterator can be created for the current entry

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