function ra_get_keywords($content, $post_id) { global $wpdb; $keywords = ra_fetch_row("keywords_" . $post_id); if (!empty($keywords)) { return $keywords; } else { $url = CLOUDAPI_URL; $rpc = new PHPRPC_Client(); $rpc->setProxy(NULL); $rpc->useService($url); $ret = $rpc->api_getkeywords(strip_tags($content), 8, "n"); $keywords = array(); foreach ($ret["data"] as $v) { $keywords[] = $v[0]; } ra_set_row("keywords_" . $post_id, $keywords); return $keywords; } }