public function setFilename($clear)
    {
        $query = $_GET;

        // Remove parts from querystring that should not be part of filename
        foreach ($clear as $value) {
            unset($query[$value]);
        }

        arsort($query);
        $queryAsString = http_build_query($query);

        $this->filename = md5($queryAsString);

        if (CIMAGE_DEBUG) {
            $this->container["query-string"] = $queryAsString;
        }

        return $this->filename;
    }