PHP Manual
迭代器
The EmptyIterator class

The EmptyIterator class

(PHP 5 >= 5.1.0, PHP 7)

简介

The EmptyIterator class for an empty iterator.

类摘要

EmptyIterator implements Iterator {

/* 方法 */

public current ( ) : mixed

public key ( ) : scalar

public next ( ) : void

public rewind ( ) : void

public valid ( ) : bool

}

Table of Contents

EmptyIterator::current — The current() method
EmptyIterator::key — The key() method
EmptyIterator::next — The next() method
EmptyIterator::rewind — The rewind() method
EmptyIterator::valid — The valid() method