/**
* @param string $playlistId
* @return StrawCollection|null A StrawCollection representation from the playlist
*/
public static function fromPlaylist($playlistId)
{
$strawCollection = null;
$playListHtmlString = CurlUtil::fetch("https://www.youtube.com/playlist?list={$playlistId}");
$playListHtml = HtmlDomParser::str_get_html($playListHtmlString);
$videosHtml = $playListHtml->find('tr.pl-video');
$videoIds = array();
foreach ($videosHtml as $vidHtml) {
$videoIds[] = $vidHtml->getAttribute('data-video-id');
}
if (!empty($videoIds)) {
$strawCollection = new StrawCollection();
$strawCollection->addVideos($videoIds);
}
return $strawCollection;
}
/**
* Actually fetch and parse the video info
*/
public function loadVideo()
{
if ($this->sources === null) {
$videoInfo = CurlUtil::fetch("http://youtube.com/get_video_info?video_id={$this->videoId}");
$videoData = array();
parse_str($videoInfo, $videoData);
// echo json_encode($videoData);die();
$this->videoTitle = $videoData['title'];
$this->sources = array();
$ref = explode(',', $videoData['url_encoded_fmt_stream_map']);
foreach ($ref as $source) {
$stream = array();
parse_str($source, $stream);
$type = explode(';', $stream['type'])[0];
$quality = explode(',', $stream['quality'])[0];
if (!array_key_exists($type, $this->sources) || !is_array($this->sources[$type])) {
$this->sources[$type] = array();
}
$this->sources[$type][$quality] = $stream;
}
}
}
