Вопросы по шаблонам для DLE

$idlistArr = $db->super_query("SELECT id_usersadd FROM dle_test WHERE id_catusers = " . (int)$catid, true);

$idlist = ! empty ( $idlistArr ) ? array_column($idlistArr, 'id_usersadd') : [];

! empty ($idlist) && $nameListArr = $db->super_query("SELECT name FROM " . USERPREFIX . "_users WHERE user_id IN (" . array_map('intval', $idlist) . ")");

$list = ! empty ($nameListArr) ? implode(', ', array_column($nameListArr, 'name') ) : [];

<?php

defined('DATALIFEENGINE') || die('Hacking attempt!');
    
class GetDataYoutube {

    private static $ytbCacheArr = [];

    private static $apiKey = 'AIzaSyC-tRTwkGhKL4eegGg6utVtsN4lklTs8oU';

    private static function getData($url = null)
    {
        if (!empty($url))
        {

            if ( ! isset ( self::$ytbCacheArr[md5($url)] ) )
            {
                self::$ytbCacheArr[md5($url)] = file_get_contents($url);
            }
            
            return self::$ytbCacheArr[md5($url)];

        }

        return false;

    }

    private static function getYoutubeDataCurrentItem($id_video)
    {
        $get_data = self::getData('https://www.googleapis.com/youtube/v3/videos?part=snippet,contentDetails,statistics&id='.$id_video.'&key='.self::$apiKey);
        $get_data = json_decode($get_data, true);
        return $get_data['items']['0'];
    }

    public static function get_title_youtube($id_video) {

        return self::getYoutubeDataCurrentItem($id_video)['snippet']['title'];
    
    }

    public static function get_description_youtube($id_video) {

        return self::getYoutubeDataCurrentItem($id_video)['snippet']['description'];
    
    }

    public static function get_publishedAt_youtube($id_video) {

        return self::getYoutubeDataCurrentItem($id_video)['snippet']['publishedAt'];
    
    }

    public static function get_thumbnails_youtube($id_video) {

        return self::getYoutubeDataCurrentItem($id_video)['snippet']['thumbnails']['maxres']['url'];

    }

    public static function get_duration_youtube($id_video) {

        return self::getYoutubeDataCurrentItem($id_video)['contentDetails']['duration'];

    }
        
    public static function get_view_youtube($id_video) {

        return self::getYoutubeDataCurrentItem($id_video)['statistics']['viewCount'];

    }

}

        echo'<meta itemprop="name" content="' .GetDataYoutube::get_title_youtube($id_video) .'">
        <meta itemprop="description" content="' .GetDataYoutube::get_description_youtube($id_video) .'">
        <meta itemprop="uploadDate" content="' .GetDataYoutube::get_publishedAt_youtube($id_video) .'">
        <meta itemprop="duration" content="' .GetDataYoutube::get_duration_youtube($id_video) .'">
        <link itemprop="thumbnailUrl" href="' .GetDataYoutube::get_thumbnails_youtube($id_video) .'">
        <span itemprop="interactionStatistic" itemscope itemtype="https://schema.org/InteractionCounter">
        <span itemprop="interactionType" itemscope itemtype="http://schema.org/WatchAction"></span>
        <meta itemprop="userInteractionCount" content="' .GetDataYoutube::get_view_youtube($id_video) .'"></span>';

?>