Use Alibaba Cloud to build an on-site search engine at low cost

Use Alibaba Cloud to build an on-site search engine at low cost. I have posted one before, but it is incomplete. You have been waiting for a long time. Here is a screenshot.
An online demonstration http://www.27tree.com/search/?q=html
This is the real tutorial, just written, welcome to complain http://www.27tree.com/blog/2013-05- 07/content_397.html

///API access entrance
define('APIROOT', 'http://css.aliyun.com');
/// Please replace it with your user code
define('CLIENT_ID', 6100098522958080) ;
/// Please replace it with your key
define('CLIENT_SECRET', '2e58ba4e81e092e616a73fb63845c043');

$api = new CloudSearchApi(APIROOT, CLIENT_ID, CLIENT_SECRET);

///Get CloudSe arch object, assuming index The document has been created and uploaded.
$indexName = 'test_index_1';
$index = $api->getIndex($indexName);
try {
 $result = $index->search('q=Cloud Search');
} catch (Exception $e) {
 exit($e->getMessage());
}