function restCommand($method, array $params = array(), array $auth = array()) {
    $queryUrl  = 'https://ваш_портал.bitrix24.ru/rest/id/секретный_код/' . $method;
    $queryData = http_build_query($params);
    $curl = curl_init();
    curl_setopt_array($curl, array(
        CURLOPT_POST           => 1,
        CURLOPT_HEADER         => 0,
        CURLOPT_RETURNTRANSFER => 1,
        CURLOPT_URL            => $queryUrl,
        CURLOPT_POSTFIELDS     => $queryData,
        )
    );
    $result = curl_exec($curl);
    curl_close($curl);
    $result = json_decode($result, 1);
    return $result;
}