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+<?php
+/**
+ * Zend Framework
+ *
+ * LICENSE
+ *
+ * This source file is subject to the new BSD license that is bundled
+ * with this package in the file LICENSE.txt.
+ * It is also available through the world-wide-web at this URL:
+ * http://framework.zend.com/license/new-bsd
+ * If you did not receive a copy of the license and are unable to
+ * obtain it through the world-wide-web, please send an email
+ * to license@zend.com so we can send you a copy immediately.
+ *
+ * @category Zend
+ * @package Zend_Gdata
+ * @subpackage Demos
+ * @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+/**
+ * PHP sample code for the YouTube data API. Utilizes the Zend Framework
+ * Zend_Gdata component to communicate with the YouTube data API.
+ *
+ * Requires the Zend Framework Zend_Gdata component and PHP >= 5.2.11
+ *
+ * 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 = 'https://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 '<img src="' . $entry->mediaGroup->thumbnail[0]->url . '" ';
+ echo 'width="80" height="72" onclick="ytvbp.presentVideo(\'' . $videoId . '\')">';
+ }
+}
+
+/**
+ * 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 <<<END
+ <b>$videoTitle</b><br />
+ <object width="425" height="350">
+ <param name="movie" value="${videoUrl}&autoplay=1"></param>
+ <param name="wmode" value="transparent"></param>
+ <embed src="${videoUrl}&autoplay=1" type="application/x-shockwave-flash" wmode="transparent"
+ width=425" height="350"></embed>
+ </object>
+END;
+ echo '<br />';
+ echoVideoMetadata($entry);
+ echo '<br /><b>Related:</b><br />';
+ echoThumbnails($relatedVideoFeed);
+ echo '<br /><b>Top rated videos by user:</b><br />';
+ echoThumbnails($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 <<<END
+ <b>Title:</b> ${title}<br />
+ <b>Description:</b> ${description}<br />
+ <b>Author:</b> <a href="${authorUrl}">${authorUsername}</a><br />
+ <b>Tags:</b> ${tags}<br />
+ <b>Duration:</b> ${duration} seconds<br />
+ <b>View count:</b> ${viewCount}<br />
+ <b>Rating:</b> ${rating} (${numRaters} ratings)<br />
+ <b>Flash:</b> <a href="${flashUrl}">${flashUrl}</a><br />
+ <b>Watch page:</b> <a href="${watchPage}">${watchPage}</a> <br />
+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 '<table class="videoList">';
+ echo '<tbody width="100%">';
+ foreach ($feed as $entry) {
+ $videoId = $entry->getVideoId();
+ $thumbnailUrl = $entry->mediaGroup->thumbnail[0]->url;
+ $videoTitle = $entry->mediaGroup->title;
+ $videoDescription = $entry->mediaGroup->description;
+ print <<<END
+ <tr onclick="ytvbp.presentVideo('${videoId}')">
+ <td width="130"><img src="${thumbnailUrl}" /></td>
+ <td width="100%">
+ <a href="#">${videoTitle}</a>
+ <p class="videoDescription">${videoDescription}</p>
+ </td>
+ </tr>
+END;
+ }
+ echo '</table>';
+}
+
+/*
+ * The main controller logic of the YouTube video browser demonstration app.
+ */
+$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);
+}