279 lines
8.6 KiB
PHP
279 lines
8.6 KiB
PHP
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<?php
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/**
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* Zend Framework
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*
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* LICENSE
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*
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* This source file is subject to the new BSD license that is bundled
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* with this package in the file LICENSE.txt.
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* It is also available through the world-wide-web at this URL:
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* http://framework.zend.com/license/new-bsd
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* If you did not receive a copy of the license and are unable to
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* obtain it through the world-wide-web, please send an email
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* to license@zend.com so we can send you a copy immediately.
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*
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* @category Zend
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* @package Zend_Gdata
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* @subpackage Demos
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* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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*/
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/**
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* PHP sample code for the YouTube data API. Utilizes the Zend Framework
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* Zend_Gdata component to communicate with the YouTube data API.
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*
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* Requires the Zend Framework Zend_Gdata component and PHP >= 5.1.4
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*
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* This sample is run from within a web browser. These files are required:
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* index.php - the main logic, which interfaces with the YouTube API
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* interface.html - the HTML to represent the web UI
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* web_browser.css - the CSS to define the interface style
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* web_browser.js - the JavaScript used to provide the video list AJAX interface
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*
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* NOTE: If using in production, some additional precautions with regards
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* to filtering the input data should be used. This code is designed only
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* for demonstration purposes.
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*/
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/**
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* @see Zend_Loader
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*/
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require_once 'Zend/Loader.php';
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/**
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* @see Zend_Gdata_YouTube
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*/
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Zend_Loader::loadClass('Zend_Gdata_YouTube');
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/**
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* Finds the URL for the flash representation of the specified video
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*
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* @param Zend_Gdata_YouTube_VideoEntry $entry The video entry
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* @return string|null The URL or null, if the URL is not found
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*/
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function findFlashUrl($entry)
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{
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foreach ($entry->mediaGroup->content as $content) {
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if ($content->type === 'application/x-shockwave-flash') {
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return $content->url;
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}
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}
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return null;
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}
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/**
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* Returns a feed of top rated videos for the specified user
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*
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* @param string $user The username
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* @return Zend_Gdata_YouTube_VideoFeed The feed of top rated videos
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*/
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function getTopRatedVideosByUser($user)
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{
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$userVideosUrl = 'http://gdata.youtube.com/feeds/users/' .
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$user . '/uploads';
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$yt = new Zend_Gdata_YouTube();
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$ytQuery = $yt->newVideoQuery($userVideosUrl);
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// order by the rating of the videos
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$ytQuery->setOrderBy('rating');
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// retrieve a maximum of 5 videos
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$ytQuery->setMaxResults(5);
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// retrieve only embeddable videos
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$ytQuery->setFormat(5);
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return $yt->getVideoFeed($ytQuery);
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}
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/**
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* Returns a feed of videos related to the specified video
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*
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* @param string $videoId The video
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* @return Zend_Gdata_YouTube_VideoFeed The feed of related videos
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*/
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function getRelatedVideos($videoId)
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{
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$yt = new Zend_Gdata_YouTube();
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$ytQuery = $yt->newVideoQuery();
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// show videos related to the specified video
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$ytQuery->setFeedType('related', $videoId);
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// order videos by rating
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$ytQuery->setOrderBy('rating');
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// retrieve a maximum of 5 videos
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$ytQuery->setMaxResults(5);
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// retrieve only embeddable videos
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$ytQuery->setFormat(5);
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return $yt->getVideoFeed($ytQuery);
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}
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/**
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* Echo img tags for the first thumbnail representing each video in the
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* specified video feed. Upon clicking the thumbnails, the video should
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* be presented.
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*
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* @param Zend_Gdata_YouTube_VideoFeed $feed The video feed
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* @return void
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*/
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function echoThumbnails($feed)
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{
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foreach ($feed as $entry) {
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$videoId = $entry->getVideoId();
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echo '<img src="' . $entry->mediaGroup->thumbnail[0]->url . '" ';
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echo 'width="80" height="72" onclick="ytvbp.presentVideo(\'' . $videoId . '\')">';
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}
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}
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/**
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* Echo the video embed code, related videos and videos owned by the same user
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* as the specified videoId.
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*
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* @param string $videoId The video
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* @return void
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*/
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function echoVideoPlayer($videoId)
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{
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$yt = new Zend_Gdata_YouTube();
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$entry = $yt->getVideoEntry($videoId);
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$videoTitle = $entry->mediaGroup->title;
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$videoUrl = findFlashUrl($entry);
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$relatedVideoFeed = getRelatedVideos($entry->getVideoId());
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$topRatedFeed = getTopRatedVideosByUser($entry->author[0]->name);
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print <<<END
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<b>$videoTitle</b><br />
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<object width="425" height="350">
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<param name="movie" value="${videoUrl}&autoplay=1"></param>
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<param name="wmode" value="transparent"></param>
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<embed src="${videoUrl}&autoplay=1" type="application/x-shockwave-flash" wmode="transparent"
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width=425" height="350"></embed>
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</object>
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END;
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echo '<br />';
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echoVideoMetadata($entry);
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echo '<br /><b>Related:</b><br />';
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echoThumbnails($relatedVideoFeed);
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echo '<br /><b>Top rated videos by user:</b><br />';
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echoThumbnails($topRatedFeed);
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}
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/**
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* Echo video metadata
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*
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* @param Zend_Gdata_YouTube_VideoEntry $entry The video entry
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* @return void
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*/
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function echoVideoMetadata($entry)
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{
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$title = $entry->mediaGroup->title;
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$description = $entry->mediaGroup->description;
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$authorUsername = $entry->author[0]->name;
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$authorUrl = 'http://www.youtube.com/profile?user=' . $authorUsername;
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$tags = $entry->mediaGroup->keywords;
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$duration = $entry->mediaGroup->duration->seconds;
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$watchPage = $entry->mediaGroup->player[0]->url;
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$viewCount = $entry->statistics->viewCount;
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$rating = $entry->rating->average;
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$numRaters = $entry->rating->numRaters;
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$flashUrl = findFlashUrl($entry);
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print <<<END
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<b>Title:</b> ${title}<br />
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<b>Description:</b> ${description}<br />
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<b>Author:</b> <a href="${authorUrl}">${authorUsername}</a><br />
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<b>Tags:</b> ${tags}<br />
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<b>Duration:</b> ${duration} seconds<br />
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<b>View count:</b> ${viewCount}<br />
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<b>Rating:</b> ${rating} (${numRaters} ratings)<br />
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<b>Flash:</b> <a href="${flashUrl}">${flashUrl}</a><br />
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<b>Watch page:</b> <a href="${watchPage}">${watchPage}</a> <br />
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END;
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}
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/**
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* Echo the list of videos in the specified feed.
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*
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* @param Zend_Gdata_YouTube_VideoFeed $feed The video feed
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* @return void
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*/
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function echoVideoList($feed)
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{
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echo '<table class="videoList">';
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echo '<tbody width="100%">';
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foreach ($feed as $entry) {
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$videoId = $entry->getVideoId();
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$thumbnailUrl = $entry->mediaGroup->thumbnail[0]->url;
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$videoTitle = $entry->mediaGroup->title;
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$videoDescription = $entry->mediaGroup->description;
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print <<<END
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<tr onclick="ytvbp.presentVideo('${videoId}')">
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<td width="130"><img src="${thumbnailUrl}" /></td>
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<td width="100%">
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<a href="#">${videoTitle}</a>
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<p class="videoDescription">${videoDescription}</p>
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</td>
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</tr>
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END;
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}
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echo '</table>';
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}
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/*
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* The main controller logic of the YouTube video browser demonstration app.
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*/
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$queryType = isset($_POST['queryType']) ? $_POST['queryType'] : null;
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if ($queryType === null) {
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/* display the entire interface */
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include 'interface.html';
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} else if ($queryType == 'show_video') {
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/* display an individual video */
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if (array_key_exists('videoId', $_POST)) {
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$videoId = $_POST['videoId'];
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echoVideoPlayer($videoId);
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} else if (array_key_exists('videoId', $_GET)) {
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$videoId = $_GET['videoId'];
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echoVideoPlayer($videoId);
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} else {
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echo 'No videoId found.';
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exit;
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}
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} else {
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/* display a list of videos */
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$searchTerm = $_POST['searchTerm'];
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$startIndex = $_POST['startIndex'];
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$maxResults = $_POST['maxResults'];
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$yt = new Zend_Gdata_YouTube();
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$query = $yt->newVideoQuery();
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$query->setQuery($searchTerm);
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$query->setStartIndex($startIndex);
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$query->setMaxResults($maxResults);
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/* check for one of the standard feeds, or list from 'all' videos */
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switch ($queryType) {
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case 'most_viewed':
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$query->setFeedType('most viewed');
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$query->setTime('this_week');
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$feed = $yt->getVideoFeed($query);
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break;
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case 'most_recent':
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$query->setFeedType('most recent');
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$feed = $yt->getVideoFeed($query);
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break;
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case 'recently_featured':
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$query->setFeedType('recently featured');
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$feed = $yt->getVideoFeed($query);
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break;
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case 'top_rated':
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$query->setFeedType('top rated');
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$query->setTime('this_week');
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$feed = $yt->getVideoFeed($query);
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break;
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case 'all':
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$feed = $yt->getVideoFeed($query);
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break;
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default:
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echo 'ERROR - unknown queryType - "' . $queryType . '"';
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break;
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}
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echoVideoList($feed);
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}
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