[darkalchemy]

Just strip it out like

str_replace(['http://', 'https://'], $avatar)

My function is url_proxy, in bittorrent.php.

function url_proxy($url, $image = false, $width = null, $height = null, $quality = null)
{
    global $site_config;
    if (empty($url) || preg_match('#' . preg_quote($site_config['domain']) . '#', $url) || preg_match('#' . preg_quote($site_config['pic_baseurl']) . '#', $url)) {
        return $url;
    }
    if (!$image) {
        return (!empty($site_config['anonymizer_url']) ? $site_config['anonymizer_url'] : '') . $url;
    }
    if ($site_config['image_proxy']) {
        $image_proxy = new Pu239\ImageProxy();
        $image = $image_proxy->get_image($url, $width, $height, $quality);
        if (!$image) {
            return $site_config['pic_baseurl'] . 'noposter.png';
        } else {
            return $site_config['pic_baseurl'] . 'proxy/' . $image;
        }
    }
    return $url;
}