$keyword), TRUE); }else{ $kid = $keyword_info['kid']; } $set['kid'] = $kid; $set['daytime'] = $daytime; $set['rank'] = implode(',', $rank_arr); DB::insert('milu_seotool_keyword_rank', $set, TRUE); } //查询排名上升还是下降 $last_info = DB::fetch_first($base_sql."r.daytime<'$daytime' ORDER BY daytime DESC LIMIT 1"); $now_rank = min($rank_arr); $last_rank = min(explode(',', $last_info['rank'])); $keyword_trend = $last_rank - $now_rank; if(!$last_rank && $now_rank) $keyword_trend = '+'; if($last_rank && !$now_rank) $keyword_trend = '-'; $keyword_data = array('keyword' => $keyword, 'rank' => $rank_arr, 'trend' => $keyword_trend); $cache_keyword_data[$cache_key] = $keyword_data; $st_cache_data['daytime'] = $daytime; $st_cache_data['data'] = $cache_keyword_data; tool_common_set('keyword', array('rank_data' => $st_cache_data)); }else{//缓存 $keyword_data = $cache_keyword_data[$cache_key]; } return $keyword_data; } // $rn每页数量 pn目前的数量 function get_ranking($keyword,$view_num = 100, $pn = 0, $data_arr = array()){ global $_G; $siteurl = $_G['siteurl']; $url_info = st_get_host_info($siteurl); $host = $url_info['host']; $rn = 100; $search_url = 'http://www.baidu.com/s?wd='.$keyword.'&pn='.$pn.'&rn='.$rn.''; $content = st_get_contents($search_url.$host, array('cache' => 3600)); preg_match_all('/

(.*?)<\/span>/i',$content,$arr); foreach($arr[1] as $k => $v){ $v = st_striptext($v); $v_arr = explode('>', $v); $match_url = $v_arr[0]; if(strexists($match_url, $host)) $data_arr[] = $pn + $k+1; } $pn += $rn; if($pn < $view_num) return get_ranking($keyword, $view_num, $pn, $data_arr); return $data_arr; } ?>