php - YouTube API v3：如何从 PlaylistItems 返回 404（未找到）错误？

Question

我知道我可以遍历播放列表来比较播放列表是否存在于 Youtube 上，但那是拨打两个电话（下面的示例），因为我已经知道播放列表 ID，所以我应该只能拨打一个电话。

两次调用 YouTube 以循环播放列表（不是我想要的方式）：

# Playlist ID from URL
$playlist=$_GET['playlist'];

# Playlists from YoUtube
$playlists=$yt->PlaylistsListFeed();

# Loop through the playlists.
foreach($playlists as $playlist_feed)
{
    if($playlist_feed['id']==$playlist)
    {
        # This is a playlist
        $this->setIsPlaylist(TRUE);

        # Assign the Playlist Items to a variable.
        $video_search=$yt->PlaylistItems($playlist_feed['id']);
        break;
    }
}

# If $video_search is not set then playlist does not exist.
if(!isset($video_search))
{
    return $display='That playlist doesn\'t exist. Please choose another.';
}

我的代码适用于单个调用，但如果播放列表 ID 不存在，我无法弄清楚如何获取它返回的 404 错误（来自下面的 YouTube 的结果）。

YouTube 方法 ( PlaylistItems):

/**
 * PlaylistItems
 *
 * Retrieves videos from a playlist.
 *
 * @param   int $playlist_id            The ID of the playlist.
 * @param   string $part                The part parameter specifies a comma-separated list of
 *                                          one or more playlistItem resource properties that the API
 *                                          response will include. The part names that you can include
 *                                          in the parameter value are id, snippet, and contentDetails.
 * @access  public
 */
public function PlaylistItems($playlist_id, $part='snippet')
{
    # Set the Database instance to a variable.
    $doc=Document::getInstance();
    try
    {
        # Bring $youtube_service into the scope
        global $youtube_service;

        $playlistsItems_optParams=array('maxResults' => 50, 'playlistId' => $playlist_id);
        $playlistsItems=$youtube_service->playlistItems->listPlaylistItems($part, $playlistsItems_optParams);

        $new_array=$this->rebuildArray($playlistsItems, TRUE);

        # Instantiate a new Utility object.
        $utility=new Utility();
        # Sort the playlist array by date.
        $items=$utility->sortByDate($new_array, 'publishedAt');

        return $items;
    }
    catch(Exception $e)
    {
        # Print Results (below)
        print_r($e); exit;

        if($e->getCode()==404)
        {
            $doc->setError('That playlist doesn\'t exist. Please choose another.');
        }
    }
} #==== End -- PlaylistItems

单次调用代码：

# Playlist ID from URL
$playlist=$_GET['playlist'];

# Assign the Playlist Items to a variable.
$video_search=$yt->PlaylistItems($playlist);

从PlaylistItems方法返回

如您所见，一切都是这样，我怎么知道是否有错误protected？private

score 0 · Accepted Answer

如果您使用的是 zend google api 库，则很容易获得播放列表提要，并捕获 google 将返回的任何错误（如果它不存在）。最简单的解决方案是获取帐户上所有播放列表的列表并循环查看播放列表 ID 是否与您的 ID 匹配，然后从那里获取播放列表条目。这样就真的不会有任何错误或异常。但是，这是在打多个电话，这是您试图避免的。为了进行一次调用，您需要拥有播放列表提要 url，然后进行一次调用并捕获异常。这些是我在处理 YouTube 播放列表时使用的几个功能的片段。

选项1：

$this->api = new Zend_Gdata_YouTube();
$this->api->setMajorProtocolVersion(2);

$feed = $this->api->retrieveAllEntriesForFeed($this->api->getPlaylistListFeed('default'));
$playlistEntry = $this->__getPlaylistEntryFromFeed($feed, $playlistID);
//do what you want with the playlist entry, like get the list of all the videos




function __getPlaylistEntryFromFeed($feed, $entryId) {
    foreach($feed as $entry) {
       if($entry->getPlaylistId()->text == $entryId) {
        return $entry;
       }
    }
}

选项 2：

try {
   $playlistVideoFeed = $this->api->getPlaylistVideoFeed($playlistFeedUrl. '?v=2&start-index=1');
   //this returns a list of videos in the playlist that you can loop through. see example function below.
} catch (Zend_Gdata_App_Exception $e) {
   echo $e->getMessage();
}


function getPlaylistVideos($playlistFeedUrl, $start=1, $total=0, $videos = array()) {
        $playlistVideoFeed = $this->api->getPlaylistVideoFeed($playlistFeedUrl. '?v=2&start-index='.$start);

        foreach ($playlistVideoFeed as $videoEntry) {
            $videos[] = $this->getDataFromVideoEntry($videoEntry);
        }
        $count = count($playlistVideoFeed);

        if(count($videos) < $total && $count != 0) {
            $videos = $this->getPlaylistvideos($playlistFeedUrl, $start + ($count-1), $total, $videos);
        }
        return $videos;
    }

要获取这些示例并将它们与您的代码一起使用，您可以尝试如下所示：

# Playlist ID from URL
$playlist=$_GET['playlist'];

# Assign the Playlist Items to a variable.
$video_search;
try {
    $video_search = $yt->PlaylistItems($playlist);
} catch(Google_ServiceException $e) {
   //there was an error
   echo $e->getMessage();
}

希望有帮助。

score 0 · Accepted Answer

我最终只是列出了来自 YouTube 的视频并获得了它们的状态。这作为 cron 脚本运行，每 10 分钟一次。

# Get new uploaded videos from the database.
$get_new_videos=$db->get_results('SELECT `id`, `file_name`, `api` FROM `'.DBPREFIX.'videos` WHERE `new` IS NULL');

# If there are new videos...
if($get_new_videos>0)
{
    # Loop through the new videos
    foreach($get_new_videos as $new_video)
    {
        # Decode the `api` field.
        $api_decoded=json_decode($new_video->api);
        # Get the YouTube Video ID.
        $video_yt_id=$api_decoded->youtube_id;

        if(isset($new_video->file_name))
        {
            # Set the path to the video on the server.
            $video_path='videos'.DS.$new_video->file_name;
        }

        $to=TO_USER;
        $reply_to=FROM_SERVER;
        $subject="Video status from ".DOMAIN_NAME;
        $body='';

        # Check the video status.
        $check_status=$yt->listVideos('status', array('id' => $video_yt_id));

        # Did YouTube return results?
        if(!empty($check_status['items']))
        {
            # Has the video been processed? Default is TRUE. will be changed to FALSE if the video still has "uploaded" status.
            $processed=TRUE;

            # Loop through the videos from YouTube.
            foreach($check_status['items'] as $status)
            {
                if($status['status']['uploadStatus']=="uploaded")
                {
                    # The video has not been processed yet so do not send an email.
                    $processed=FALSE;
                }
                # Check to see if the YouTube upload was a success.
                elseif($status['status']['uploadStatus']=="processed")
                {
                    # Tell the user the video was uploaded.
                    $body.='Your video has been uploaded to YouTube and can be viewed at http://'.FULL_DOMAIN.'media/videos/?video='.$new_video->id;
                }
                # Check if the uploaded video status is rejected.
                elseif($status['status']['uploadStatus']=="rejected")
                {
                    if(isset($new_video->file_name))
                    {
                        # Get the Upload class.
                        require_once MODULES.'Form'.DS.'Upload.php';
                        # Instantiate an Upload object.
                        $upload=new Upload($video_path);
                        # Delete video file from server.
                        $upload->deleteFile($video_path);
                        # Remove extention from filename.
                        $name_no_ext=substr($new_video->file_name, 0, strrpos($new_video->file_name, '.'));
                        # Delete the thumbnails from the server.
                        $upload->deleteFile(IMAGES_PATH.'videos'.DS.'original'.DS.$name_no_ext.'.jpg');
                        $upload->deleteFile(IMAGES_PATH.'videos'.DS.$name_no_ext.'*.jpg', TRUE);

                        # Delete rejected video from YouTube
                        $delete_response=$yt->deleteVideo($video_yt_id);
                    }

                    # Need to delete the entry from the database as well.
                    $db->query('DELETE FROM `'.DBPREFIX.'videos` WHERE `id` = '.$db->quote($new_video->id).' LIMIT 1');

                    # Check if the rejection status was a duplicate.
                    if($status['status']['rejectionReason']=="duplicate")
                    {
                        # Tell the user the video was a duplicate.
                        $body.='Your video was rejected because it was a duplicate video';
                    }
                }
            }
        }
        else
        {
            $body.='Your video was not found on YouTube';
            $processed=TRUE;
        }

        # Update database if the video has been "processed".
        if($processed===TRUE)
        {
            # Get the PHPMailer class.
            require_once MODULES.'Email'.DS.'Email.php';
            # Instantiate a new PHPMailer object.
            $mail=new Email();

            $mail->sendEmail($subject, $to, $body, $reply_to);

            # Set new videos to old.
            $db->query('UPDATE `'.DBPREFIX.'videos` SET `new` = 0 WHERE `id` = '.$db->quote($new_video->id).' LIMIT 1');
        }
    }
}

php - YouTube API v3：如何从 PlaylistItems 返回 404（未找到）错误？

2 回答 2

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