SimpleXMLIterator::valid
Countable
SPL
PHP Manual

# Interfaces

## Table of Contents

- The Countable interface
- The RecursiveIterator interface
- The SeekableIterator interface

SPL provides a set of interfaces.

See also the Predefined Interfaces

## Interface list

- Countable
- OuterIterator
- RecursiveIterator
- SeekableIterator
- SplObserver
- SplSubject

SimpleXMLIterator::valid
Countable
SPL
PHP Manual