PHP Manual
Iterators
The RecursiveFilterIterator class

The RecursiveFilterIterator class

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

Introduction

This abstract iterator filters out unwanted values for a RecursiveIterator. This class should be extended to implement custom filters. The RecursiveFilterIterator::accept() must be implemented in the subclass.

Class synopsis

abstract class RecursiveFilterIterator extends FilterIterator implements RecursiveIterator {

/* Methods */

public __construct(RecursiveIterator $iterator)

public getChildren(): ?RecursiveFilterIterator

public hasChildren(): bool

/* Inherited methods */

public FilterIterator::accept(): bool

public FilterIterator::current(): mixed

public FilterIterator::getInnerIterator(): Iterator

public FilterIterator::key(): mixed

public FilterIterator::next(): void

public FilterIterator::rewind(): void

public FilterIterator::valid(): bool

public IteratorIterator::current(): mixed

public IteratorIterator::getInnerIterator(): ?Iterator

public IteratorIterator::key(): mixed

public IteratorIterator::next(): void

public IteratorIterator::rewind(): void

public IteratorIterator::valid(): bool

}

RecursiveFilterIterator::__construct — Create a RecursiveFilterIterator from a RecursiveIterator
RecursiveFilterIterator::getChildren — Return the inner iterator's children contained in a RecursiveFilterIterator
RecursiveFilterIterator::hasChildren — Check whether the inner iterator's current element has children