/Applications/MAMP/htdocs/quail/trunk/quail/common/services/media/youtube.php

<?php

require_once('mediaService.php');

class youtubeService extends mediaService {
        
        var $regex = array(
            '@youtube\.com/v/([^"\& ]+)@i',
            '@youtube\.com/watch\?v=([^"\& ]+)@i',
            '@youtube\.com/\?v=([^"\& ]+)@i',
                );
        
        var $search_url = 'http://gdata.youtube.com/feeds/api/videos?q=%s&caption&v=2';
        
        function captionsMissing($link_url) {
        
                if($code = $this->isYouTubeVideo($link_url)) {
                        $result = file_get_contents(sprintf($this->search_url, $code));
                        if(!$result) {
                                return false;
                        }
                        if (strpos($result, 'video:'. $code) === false) {
                                return true;
                        }
                }
                return false;
        }
        
        private function isYouTubeVideo($link_url) {
                $matches = null; 
                foreach($this->regex as $pattern) {
                        if(preg_match($pattern, trim($link_url), $matches)) {
                                return $matches[1];
                        }
                }
                return false;
        }
} 

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