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<InterfacesOuterIterator::getInnerIterator>
^InterfacesLast updated: Mon, 26 Oct 2026

The OuterIterator interface

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

Introduction

Classes implementing OuterIterator can be used to iterate over iterators.

Interface synopsis

interface OuterIterator extends Iterator {
/* Methods */
public function getInnerIterator(): ?Iterator
/* Inherited methods */
public function Iterator::current(): mixed
public function Iterator::key(): mixed
public function Iterator::next(): void
public function Iterator::rewind(): void
public function Iterator::valid(): bool
}

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<InterfacesOuterIterator::getInnerIterator>
^InterfacesLast updated: Mon, 26 Oct 2026