([\w\W]*?)<\/TITLE>/si', $output, $matches); if (!empty($matches[1])) { $page_info['site_title'] = $matches[1]; } // 正则匹配，获取全部的meta元数据 preg_match_all('//si', $output, $matches); $meta_str_array = $matches[0]; $meta_array = array(); $meta_array['description'] = ''; $meta_array['keywords'] = ''; foreach($meta_str_array as $meta_str) { preg_match('/