SplObjectStorage::valid
ArrayIterator
SPL
PHP Manual

# Iterators

## Table of Contents

- The ArrayIterator class
- The CachingIterator class
- The DirectoryIterator class
- The FilesystemIterator class
- The FilterIterator class
- The GlobIterator class
- The IteratorIterator class
- The LimitIterator class
- The ParentIterator class
- The RecursiveCachingIterator class
- The RecursiveDirectoryIterator class
- The RecursiveIteratorIterator class
- The SimpleXMLIterator class

SPL provides a set of iterators to traverse over objects.

## Undocumented Iterators

- AppendIterator
- EmptyIterator
- InfiniteIterator
- MultipleIterator
- NoRewindIterator
- RecursiveArrayIterator
- RecursiveFilterIterator
- RecursiveRegexIterator
- RecursiveTreeIterator
- RegexIterator

SplObjectStorage::valid
ArrayIterator
SPL
PHP Manual