PHP 5.4.31 Released

La clase RecursiveFilterIterator

(PHP 5 >= 5.1.0)

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 RecursiveFilterIterator extends FilterIterator implements OuterIterator , RecursiveIterator {
/* Métodos */
public __construct ( RecursiveIterator $iterator )
public RecursiveFilterIterator getChildren ( void )
public bool hasChildren ( void )
/* Métodos heredados */
public abstract bool FilterIterator::accept ( void )
public mixed FilterIterator::current ( void )
public Iterator FilterIterator::getInnerIterator ( void )
public mixed FilterIterator::key ( void )
public void FilterIterator::next ( void )
public void FilterIterator::rewind ( void )
public bool FilterIterator::valid ( void )
}

Tabla de contenidos

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User Contributed Notes 2 notes

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3
Russell Dias
3 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:

<?php
class 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";
}
?>
up
0
lemats
3 years ago
Recursive directory/file listing, filteres ".svn":

<?php

class 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;
}

?>
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