创建使用php输入的URL的预览

if ($link == true) {
    // Links
    $link_search = '/\[a\](.*?)\[\/a\]/i';

    if (preg_match_all($link_search, $text, $matches)) {

        foreach ($matches[1] as $match) {
            $match_decode = urldecode($match);
            $match_url = $match_decode;

            if (!preg_match("/http\:\/\//", $match_decode)) {
                $match_url = 'http://' . $match_url;
            }

            $str = file_get_contents($match_url);
            preg_match("/\<title\>(.*)\<\/title\>/",$str,$title);
            $text = str_replace('[a]' . $match . '[/a]', '<p style="border-style:solid; padding: 6px; border-width: 1px; border-color:#4e5665;"><a href="' . strip_tags($match_url) . '" target="_blank" rel="nofollow"><b>' . $title[1] . '</b></a>
                       <br><small>'.$match_url.'</small></p>', $text); 
           }
    }
}

The above code shows <Title> of the URL and when clicks it, he redirected to the specific URL. What I want to do is add description <meta> of the destination below the <Title> so that it looks more like a preview of the URL.

What should I do to get the <meta> and what and where to add it?