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# [迭代器](https://www.php.net/manual/zh/spl.iterators.php) * [ArrayIterator](https://www.php.net/manual/zh/class.arrayiterator.php) * [RecursiveArrayIterator](https://www.php.net/manual/zh/class.recursivearrayiterator.php) * [EmptyIterator](https://www.php.net/manual/zh/class.emptyiterator.php) * [IteratorIterator](https://www.php.net/manual/zh/class.iteratoriterator.php) * [AppendIterator](https://www.php.net/manual/zh/class.appenditerator.php) * [CachingIterator](https://www.php.net/manual/zh/class.cachingiterator.php) * [RecursiveCachingIterator](https://www.php.net/manual/zh/class.recursivecachingiterator.php) * [FilterIterator](https://www.php.net/manual/zh/class.filteriterator.php) * [CallbackFilterIterator](https://www.php.net/manual/zh/class.callbackfilteriterator.php) * [RecursiveCallbackFilterIterator](https://www.php.net/manual/zh/class.recursivecallbackfilteriterator.php) * [RecursiveFilterIterator](https://www.php.net/manual/zh/class.recursivefilteriterator.php) * [ParentIterator](https://www.php.net/manual/zh/class.parentiterator.php) * [RegexIterator](https://www.php.net/manual/zh/class.regexiterator.php) * [RecursiveRegexIterator](https://www.php.net/manual/zh/class.recursiveregexiterator.php) * [InfiniteIterator](https://www.php.net/manual/zh/class.infiniteiterator.php) * [LimitIterator](https://www.php.net/manual/zh/class.limititerator.php) * [NoRewindIterator](https://www.php.net/manual/zh/class.norewinditerator.php) * [MultipleIterator](https://www.php.net/manual/zh/class.multipleiterator.php) * [RecursiveIteratorIterator](https://www.php.net/manual/zh/class.recursiveiteratoriterator.php) * [RecursiveTreeIterator](https://www.php.net/manual/zh/class.recursivetreeiterator.php) * [DirectoryIterator](https://www.php.net/manual/zh/class.directoryiterator.php)(extends[SplFileInfo](https://www.php.net/manual/zh/class.splfileinfo.php)) * [FilesystemIterator](https://www.php.net/manual/zh/class.filesystemiterator.php) * [GlobIterator](https://www.php.net/manual/zh/class.globiterator.php) * [RecursiveDirectoryIterator](https://www.php.net/manual/zh/class.recursivedirectoryiterator.php)