= 5.1.4 * * This sample is run from within a web browser. These files are required: * index.php - the main logic, which interfaces with the YouTube API * interface.html - the HTML to represent the web UI * web_browser.css - the CSS to define the interface style * web_browser.js - the JavaScript used to provide the video list AJAX interface * * NOTE: If using in production, some additional precautions with regards * to filtering the input data should be used. This code is designed only * for demonstration purposes. */ /** * @see Zend_Loader */ require_once 'Zend/Loader.php'; /** * @see Zend_Gdata_YouTube */ Zend_Loader::loadClass('Zend_Gdata_YouTube'); /** * Finds the URL for the flash representation of the specified video * * @param Zend_Gdata_YouTube_VideoEntry $entry The video entry * @return string|null The URL or null, if the URL is not found */ function findFlashUrl($entry) { foreach ($entry->mediaGroup->content as $content) { if ($content->type === 'application/x-shockwave-flash') { return $content->url; } } return null; } /** * Returns a feed of top rated videos for the specified user * * @param string $user The username * @return Zend_Gdata_YouTube_VideoFeed The feed of top rated videos */ function getTopRatedVideosByUser($user) { $userVideosUrl = 'http://gdata.youtube.com/feeds/users/' . $user . '/uploads'; $yt = new Zend_Gdata_YouTube(); $ytQuery = $yt->newVideoQuery($userVideosUrl); // order by the rating of the videos $ytQuery->setOrderBy('rating'); // retrieve a maximum of 5 videos $ytQuery->setMaxResults(5); // retrieve only embeddable videos $ytQuery->setFormat(5); return $yt->getVideoFeed($ytQuery); } /** * Returns a feed of videos related to the specified video * * @param string $videoId The video * @return Zend_Gdata_YouTube_VideoFeed The feed of related videos */ function getRelatedVideos($videoId) { $yt = new Zend_Gdata_YouTube(); $ytQuery = $yt->newVideoQuery(); // show videos related to the specified video $ytQuery->setFeedType('related', $videoId); // order videos by rating $ytQuery->setOrderBy('rating'); // retrieve a maximum of 5 videos $ytQuery->setMaxResults(5); // retrieve only embeddable videos $ytQuery->setFormat(5); return $yt->getVideoFeed($ytQuery); } /** * Echo img tags for the first thumbnail representing each video in the * specified video feed. Upon clicking the thumbnails, the video should * be presented. * * @param Zend_Gdata_YouTube_VideoFeed $feed The video feed * @return void */ function echoThumbnails($feed) { foreach ($feed as $entry) { $videoId = $entry->getVideoId(); echo '

'; } } /** * Echo the video embed code, related videos and videos owned by the same user * as the specified videoId. * * @param string $videoId The video * @return void */ function echoVideoPlayer($videoId) { $yt = new Zend_Gdata_YouTube(); $entry = $yt->getVideoEntry($videoId); $videoTitle = $entry->mediaGroup->title; $videoUrl = findFlashUrl($entry); $relatedVideoFeed = getRelatedVideos($entry->getVideoId()); $topRatedFeed = getTopRatedVideosByUser($entry->author[0]->name); print <<$videoTitle

END; echo '
'; echoVideoMetadata($entry); echo '
Related:
'; echoThumbnails($relatedVideoFeed); echo '
Top rated videos by user:
'; echoThumbnails($topRatedFeed); } /** * Echo video metadata * * @param Zend_Gdata_YouTube_VideoEntry $entry The video entry * @return void */ function echoVideoMetadata($entry) { $title = $entry->mediaGroup->title; $description = $entry->mediaGroup->description; $authorUsername = $entry->author[0]->name; $authorUrl = 'http://www.youtube.com/profile?user=' . $authorUsername; $tags = $entry->mediaGroup->keywords; $duration = $entry->mediaGroup->duration->seconds; $watchPage = $entry->mediaGroup->player[0]->url; $viewCount = $entry->statistics->viewCount; $rating = $entry->rating->average; $numRaters = $entry->rating->numRaters; $flashUrl = findFlashUrl($entry); print <<Title: ${title}
Description: ${description}
Author: ${authorUsername}
Tags: ${tags}
Duration: ${duration} seconds
View count: ${viewCount}
Rating: ${rating} (${numRaters} ratings)
Flash: ${flashUrl}
Watch page: ${watchPage}
END; } /** * Echo the list of videos in the specified feed. * * @param Zend_Gdata_YouTube_VideoFeed $feed The video feed * @return void */ function echoVideoList($feed) { echo ''; echo ''; foreach ($feed as $entry) { $videoId = $entry->getVideoId(); $thumbnailUrl = $entry->mediaGroup->thumbnail[0]->url; $videoTitle = $entry->mediaGroup->title; $videoDescription = $entry->mediaGroup->description; print << END; } echo ''; } /* * The main controller logic of the YouTube video browser demonstration app. */ $queryType = isset($_POST['queryType']) ? $_POST['queryType'] : null; if ($queryType === null) { /* display the entire interface */ include 'interface.html'; } else if ($queryType == 'show_video') { /* display an individual video */ if (array_key_exists('videoId', $_POST)) { $videoId = $_POST['videoId']; echoVideoPlayer($videoId); } else if (array_key_exists('videoId', $_GET)) { $videoId = $_GET['videoId']; echoVideoPlayer($videoId); } else { echo 'No videoId found.'; exit; } } else { /* display a list of videos */ $searchTerm = $_POST['searchTerm']; $startIndex = $_POST['startIndex']; $maxResults = $_POST['maxResults']; $yt = new Zend_Gdata_YouTube(); $query = $yt->newVideoQuery(); $query->setQuery($searchTerm); $query->setStartIndex($startIndex); $query->setMaxResults($maxResults); /* check for one of the standard feeds, or list from 'all' videos */ switch ($queryType) { case 'most_viewed': $query->setFeedType('most viewed'); $query->setTime('this_week'); $feed = $yt->getVideoFeed($query); break; case 'most_recent': $query->setFeedType('most recent'); $feed = $yt->getVideoFeed($query); break; case 'recently_featured': $query->setFeedType('recently featured'); $feed = $yt->getVideoFeed($query); break; case 'top_rated': $query->setFeedType('top rated'); $query->setTime('this_week'); $feed = $yt->getVideoFeed($query); break; case 'all': $feed = $yt->getVideoFeed($query); break; default: echo 'ERROR - unknown queryType - "' . $queryType . '"'; break; } echoVideoList($feed); }