iframe-parameters.php

protected function filter($response, $arguments)
{
    $data = json_decode($response);

    $dom = new \DOMDocument;
    $dom->loadHTML($data->html);

    $iframe = $dom->getElementsByTagName('iframe')->item(0);

    if ($iframe === null) {
        return $response;
    }

    $src  = $iframe->getAttribute('src');
    $src .= (strpos($src, '?') ? '&' : '?') . http_build_query($arguments);

    $iframe->setAttribute('src', $src);

    $data->html = $dom->saveXML($iframe, LIBXML_NOEMPTYTAG);

    return json_encode($data);
}