function youtubeid($url) {
        if (preg_match('%youtube\\.com/(.+)%', $url, $match)) {
                $match = $match[1];
                $replace = array("watch?v=", "v/", "vi/");
                $match = str_replace($replace, "", $match);
                //Below we remove everything after "&" (example: "&feature=related")
                $match=array_shift(explode('&', basename($match)));
        }
        return $match;
}