gistfile1.aw

<?php
   /**
     * (non-PHPdoc)
     * @see FilterIterator::accept()
     */
    public function accept()
    {
        /* @var $file SplFileInfo */
        $file = $this->current();
        if ($this->isHidden($file->getFilename())) {
            return false;
        }
        if ($file->isDir()) {
            return false;
        } else if ($file->isFile()) {
            if (empty($this->fileExtensions)) {
                return true;
            } else {
                $extension = pathinfo($file->getPathname(), PATHINFO_EXTENSION);
                return in_array($extension, $this->fileExtensions);
            }
        }

        return false;
    }