La clase RecursiveFilterIterator

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

    Introducción

    Este iterador abstracto filtra valores no deseados de RecursiveIterator. Esta clase debería ampliarse para implementar filtros personalizados. El método RecursiveFilterIterator::accept() debe ser implementado en la subclase.

    Sinopsis de la Clase

    abstract class RecursiveFilterIterator extends FilterIterator implements RecursiveIterator {
    /* Métodos */
    public __construct(RecursiveIterator $iterator)
    public getChildren(): ?RecursiveFilterIterator
    public hasChildren(): bool
    /* Métodos heredados */
    public FilterIterator::accept(): bool
    public FilterIterator::current(): mixed
    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
    }

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    User Contributed Notes 2 notes

    up
    8
    lemats
    14 years ago
    Recursive directory/file listing, filteres ".svn":<?phpclass MyRecursiveFilterIterator extends RecursiveFilterIterator {    public static $FILTERS = array(        '.svn',    );    public function accept() {        return !in_array(            $this->current()->getFilename(),            self::$FILTERS,            true        );    }}$dirItr    = new RecursiveDirectoryIterator('/sample/path');$filterItr = new MyRecursiveFilterIterator($dirItr);$itr       = new RecursiveIteratorIterator($filterItr, RecursiveIteratorIterator::SELF_FIRST);foreach ($itr as $filePath => $fileInfo) {    echo $fileInfo->getFilename() . PHP_EOL;}?>
    up
    3
    Russell Dias
    14 years ago
    I had to create a filter to get values greater than a certain number in a multidimensional array.Hope someone else finds it helpful:<?phpclass GreaterThanFilter extends RecursiveFilterIterator {    protected $limit;    public function __construct(RecursiveIterator $recursiveIter, $limit) {        $this->limit = $limit;        parent::__construct($recursiveIter);    }    public function accept() {        return $this->hasChildren() || strlen($this->current()) >= $this->limit;    }     public function getChildren() {        return new self($this->getInnerIterator()->getChildren(), $this->limit);    }}$iter = new RecursiveArrayIterator($array);$filter   = new GreaterThanFilter($iter, 5);foreach(new RecursiveIteratorIterator($filter) as $key => $value){    echo $value . "\n";}?>
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