# The EmptyIterator class

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

## 简介

The EmptyIterator class for an empty iterator.

## 类摘要

class EmptyIterator implements Iterator {
/* 方法 */
public current(): never
public key(): never
public next(): void
public rewind(): void
public valid(): false
}

## 目录

- EmptyIterator::current — The current() method
- EmptyIterator::key — The key() method
- EmptyIterator::next — The next() method
- EmptyIterator::rewind — The rewind() method
- EmptyIterator::valid — Checks whether the current element is valid

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