本文為英文版的機器翻譯版本，如內容有任何歧義或不一致之處，概以英文版為準。

使用第 3 AWS SDK for PHP 版簽署自訂 Amazon CloudSearch 網域請求

Amazon CloudSearch 網域請求可以自訂超出AWS SDK for PHP. 如果您需要對受 IAM 身份驗證保護的域發出自定義請求，則可以使用 SDK 的憑據提供者和簽署者簽署任何 PSR-7 請求。

例如，您若依照 CloudSearch 入門指南所述步驟進行操作，且希望使用步驟 3 中受 IAM 保護的網域，則必須依照下述方式簽署並執行請求。

下列範例示範如何：

所有的範例程式碼都可以AWS SDK for PHP在這裡取得 GitHub。

登入資料

在執行範例程式碼之前，請依照中的說明設定您的AWS認證憑證。然後匯入AWS SDK for PHP，如中所述基本使用。

簽署 Amazon CloudSearch 域請求

匯入

require './vendor/autoload.php';

use Aws\Credentials\CredentialProvider;
use Aws\Signature\SignatureV4;
use GuzzleHttp\Client;
use GuzzleHttp\Psr7\Request;

範例程式碼

function searchDomain(
    $client,
    $domainName,
    $domainId,
    $domainRegion,
    $searchString
) {
    $domainPrefix = 'search-';
    $cloudSearchDomain = 'cloudsearch.amazonaws.com';
    $cloudSearchVersion = '2013-01-01';
    $searchPrefix = 'search?';

    // Specify the search to send.
    $request = new Request(
        'GET',
        "https://$domainPrefix$domainName-$domainId.$domainRegion." .
            "$cloudSearchDomain/$cloudSearchVersion/" .
            "$searchPrefix$searchString"
    );

    // Get default AWS account access credentials.
    $credentials = call_user_func(CredentialProvider::defaultProvider())->wait();

    // Sign the search request with the credentials.
    $signer = new SignatureV4('cloudsearch', $domainRegion);
    $request = $signer->signRequest($request, $credentials);

    // Send the signed search request.
    $response = $client->send($request);

    // Report the search results, if any.
    $results = json_decode($response->getBody());

    $message = '';

    if ($results->hits->found > 0) {
        $message .= 'Search results:' . "\n";

        foreach ($results->hits->hit as $hit) {
            $message .= $hit->fields->title . "\n";
        }
    } else {
        $message .= 'No search results.';
    }

    return $message;
}

function searchADomain()
{
    $domainName = 'my-search-domain';
    $domainId = '7kbitd6nyiglhdtmssxEXAMPLE';
    $domainRegion = 'us-east-1';
    $searchString = 'q=star+wars&return=title';
    $client = new Client();

    echo searchDomain(
        $client,
        $domainName,
        $domainId,
        $domainRegion,
        $searchString
    );
}

// Uncomment the following line to run this code in an AWS account.
// searchADomain();