Example CloudSearch

example.php

<?php

use Aws\CloudSearch\CloudSearchClient;
use Aws\CloudSearchDomain\CloudSearchDomainClient;

// http://docs.aws.amazon.com/aws-sdk-php/v2/guide/service-cloudsearchdomain.html

$client = CloudSearchDomainClient::factory(array(
    //'endpoint'   => 'https://doc-example-xxx.ap-southeast-1.cloudsearch.amazonaws.com',
    'endpoint' => 'https://search-example-xxx.ap-southeast-1.cloudsearch.amazonaws.com',
    'validation' => false,
    'version' => 'latest',
    'credentials' => [
        'key' => '[KEY] ',
        'secret' => '[SECRET]',
    ],
    'region' =>  'ap-southeast-1',
));


$batch = [
    [
        'type' => 'add',
        'id' => 1,
        'fields' => ['title' => 'ข้อมูลเพื่อการค้น']
    ],
    [
        'type' => 'add',
        'id' => 2,
        'fields' => ['title' => 'สุดยอดครับ แบบนี้ผมจะทำอะไร']
    ]
];

/*
$result = $client->uploadDocuments([
    'documents' => json_encode($batch),
    'contentType' =>'application/json'
]);
*/


// Use the search operation
$result = $client->search(array('query' => 'ผม'));
$hitCount = $result->getPath('hits/found');

dump("Hits: {$hitCount}", $result);

Do you have this in version 3?