Check if Youtube and Vimeo-clips are valid

Question

I have been trying for quite a while to check if submitted links are valid film-clips from youtube.com or vimeo.com but I didn\'t succeed.

Any ideas how to check ur

Answer 1

I wrote this function to check if the link is a valid youtube link.

/**
 * This function will check if 'url' is valid youtube video and return the ID.
 *  If the return value === false then this is **not** a valid youtube url, otherwise   the youtube id is returned.
 *
 * @param  $url
 * @return 
 */


 private static function get_youtube_id($url) {
        $link = parse_url($url,PHP_URL_QUERY);

    /**split the query string into an array**/
    if($link == null) $arr['v'] = $url;
    else  parse_str($link, $arr);
    /** end split the query string into an array**/
    if(! isset($arr['v'])) return false; //fast fail for links with no v attrib - youtube only

    $checklink = YOUTUBE_CHECK . $arr['v'];

    //** curl the check link ***//
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL,$checklink);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
    curl_setopt($ch, CURLOPT_TIMEOUT, 5);
    $result = curl_exec($ch);
    curl_close($ch);

    $return = $arr['v'];
    if(trim($result)=="Invalid id") $return = false; //you tube response

    return $return; //the stream is a valid youtube id.
}