name : CustomFilterIterator.php <?php /* * This file is part of the Symfony package. * * (c) Fabien Potencier <fabien@symfony.com> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Symfony\Component\Finder\Iterator; /** * CustomFilterIterator filters files by applying anonymous functions. * * The anonymous function receives a \SplFileInfo and must return false * to remove files. * * @author Fabien Potencier <fabien@symfony.com> */ class CustomFilterIterator extends FilterIterator { private $filters = array(); /** * Constructor. * * @param \Iterator $iterator The Iterator to filter * @param array $filters An array of PHP callbacks * * @throws \InvalidArgumentException */ public function __construct(\Iterator $iterator, array $filters) { foreach ($filters as $filter) { if (!is_callable($filter)) { throw new \InvalidArgumentException('Invalid PHP callback.'); } } $this->filters = $filters; parent::__construct($iterator); } /** * Filters the iterator values. * * @return Boolean true if the value should be kept, false otherwise */ public function accept() { $fileinfo = $this->current(); foreach ($this->filters as $filter) { if (false === call_user_func($filter, $fileinfo)) { return false; } } return true; } }