Check if Youtube and Vimeo-clips are valid

问题:

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 url's like:

http://www.youtube.com/watch?v=jc0rnCBCX2c&feature=fvhl (valid)
http://www.youtube.com/watch?v=jc0FFCBCX2c&feature=fvhl (not valid)
http://www.youtube.com/v/jc0rnCBCX2c (valid)
http://www.youtube.com/v/ddjcddddX2c (not valid)
http://www.vimeo.com/463l522 (not valid)
http://www.vimeo.com/1483909 (valid)
http://www.vimeo.com/lumiblue (not valid)
http://www.youtube.com/user/dd181921 (not valid)

?

I use php.

回答1:

i see a answer in this site : www.experts-exchange.com/Programming/Languages/Scripting/JavaScript/Q_23765374.html

and he said :

I would suggest using youtube's API since you are trying to validate if the video exists. or if you don't want to go into API stuff then you can do simple trick. check this link:

http://code.google.com/apis/youtube/developers_guide_php.html#RetrievingVideoEntry

to check for the existence of a video you will need to extract "v" value and send a request that contains the video id to :

http://gdata.youtube.com/feeds/api/videos/videoID

where videoID is the "v" value for example a video FLE2htv9oxc will be queried like this http://gdata.youtube.com/feeds/api/videos/FLE2htv9oxc if it does not exist then you will get a page with "Invalid id" if it exists, will return an XML feed having various info about the video. this way you can check that the video exists.

hope this will get you in the right direction.

the same thing with vimeo , try to look in api documentation in there site. http://www.vimeo.com/api

回答2:

If you check the response headers from a request to http://gdata.youtube.com/feeds/api/videos/videoId where videoId is the google video Identifier, you should get a 200 if the video exists and a 400 (bad request) if the video doesn't exist.

// PHP code

// Check if youtube video item exists by the existance of the the 200 response
$headers = get_headers('http://gdata.youtube.com/feeds/api/videos/' . $youtubeId);
if (!strpos($headers[0], '200')) {
    echo "The YouTube video you entered does not exist";
    return false;
}

回答3:

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 <type> $url
 * @return <type>
 */


 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.
}

回答4:

You can try to catch the 301 header that you tube throws if the video is no longer valid

回答5:

/* 
 * Verify YouTube video status
 */

    $videoID = "o8UCI7r1Aqw";
    $header = get_headers("http://gdata.youtube.com/feeds/api/videos/". $videoID);

    switch($headers[0]) {
    case '200':
    // video valid
    break;

    case '403':
    // private video
    break;

    case '404':
    // video not found
    break;

    default:
    // nothing  above
    break;
    }