如何复用google/apiclient的OAuth凭证对接BetaAnalyticsDataClient拉取GA4数据

• 你可以直接使用两个SDK共同依赖的google/auth内置类UserRefreshCredentials复用现有OAuth凭证，不需要走服务账号配置逻辑。
• 原有客户端配置、refresh token数据无需修改，可以直接复用。

<?php
use Google\Analytics\Data\V1beta\BetaAnalyticsDataClient;
use Google\Auth\Credentials\UserRefreshCredentials;

$appName = 'My Analytics App';
// 原有客户端配置，无需修改
$clientAuthFileData = [
    'web' => [
        'client_id' => '######-#######.apps.googleusercontent.com',
        'project_id' => 'my-project-name',
        'auth_uri' => 'https://accounts.google.com/o/oauth2/auth',
        'token_uri' => 'https://oauth2.googleapis.com/token',
        'auth_provider_x509_cert_url' => 'https://www.googleapis.com/oauth2/v1/certs',
        'client_secret' => 'XXXXXXXXXXX',
        'redirect_uris' => [
            'https://site1.com/authorize.php',
            'https://site2.com/authorize.php',
            'https://site3.com/authorize.php',
            'https://site4.com/authorize.php',
            'https://site5.com/authorize.php',
        ],
    ],
];
// 原有授权token数据，无需修改
$authFileData = [
    'access_token' => 'XXXXXXXX',
    'expires_in' => 3600,
    'refresh_token' => 'XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX',
    'scope' => 'https://www.googleapis.com/auth/userinfo.email openid https://www.googleapis.com/auth/analytics.readonly',
    'token_type' => 'Bearer',
    'id_token' => 'XXXXXXXXXXXXXXXXXXXXXX.XXXXXXXXXXXXXXXXXXX',
    'created' => 1553570124,
];

// 构造用户刷新令牌凭证
$credentials = new UserRefreshCredentials(
    $authFileData['scope'],
    [
        'client_id' => $clientAuthFileData['web']['client_id'],
        'client_secret' => $clientAuthFileData['web']['client_secret'],
        'refresh_token' => $authFileData['refresh_token']
    ]
);

// 将凭证直接传入GA4客户端即可完成初始化
$client = new BetaAnalyticsDataClient([
    'credentials' => $credentials,
    'projectId' => $clientAuthFileData['web']['project_id']
]);

// 后续可正常调用GA4 Data API接口

如果你不想调整原有token刷新逻辑，也可以直接将刷新后拿到的有效access_token传入GA4客户端：

<?php
use Google\Client as Google_Client;
use Google\Analytics\Data\V1beta\BetaAnalyticsDataClient;

// 原有获取token的逻辑完全保留
$googleClient = new Google_Client();
$googleClient->setApplicationName( $appName );
$googleClient->setAccessType( "offline" );
$googleClient->setAuthConfig( $clientAuthFileData );
$token = $googleClient->fetchAccessTokenWithRefreshToken( $authFileData['refresh_token'] );

// 直接传入有效access_token初始化GA4客户端
$client = new BetaAnalyticsDataClient([
    'credentials' => [
        'key' => $token['access_token']
    ],
    'projectId' => $clientAuthFileData['web']['project_id']
]);

注意：该方案需要你自行处理access_token过期刷新逻辑，token过期后需要重新调用刷新方法获取新的token再初始化客户端。

内容的提问来源于stack exchange，提问作者spyke01