Google APIs Client Library for PHP

NOTE: please check to see if the package you'd like to install is available in our list of Google cloud packages first, as these are the recommended libraries.

Reference Docs

https://googleapis.github.io/google-api-php-client/

License

Apache 2.0

The Google API Client Library enables you to work with Google APIs such as Gmail, Drive or YouTube on your server.

These client libraries are officially supported by Google. However, the libraries are considered complete and are in maintenance mode. This means that we will address critical bugs and security issues but will not add any new features.

For Google Cloud Platform APIs such as Datastore, Cloud Storage, Pub/Sub, and Compute Engine, we recommend using the Google Cloud client libraries. For a complete list of supported Google Cloud client libraries, see googleapis/google-cloud-php.

• PHP 8.0 or higher

The docs folder provides detailed guides for using this library.

You can use Composer or simply Download the Release

The preferred method is via composer. Follow the installation instructions if you do not already have composer installed.

Once composer is installed, execute the following command in your project root to install this library:

composer require google/apiclient

If you're facing a timeout error then either increase the timeout for composer by adding the env flag as COMPOSER_PROCESS_TIMEOUT=600 composer install or you can put this in the config section of the composer schema:

{
    "config": {
        "process-timeout": 600
    }
}

Finally, be sure to include the autoloader:

require_once '/path/to/your-project/vendor/autoload.php';

This library relies on google/apiclient-services. That library provides up-to-date API wrappers for a large number of Google APIs. In order that users may make use of the latest API clients, this library does not pin to a specific version of google/apiclient-services. In order to prevent the accidental installation of API wrappers with breaking changes, it is highly recommended that you pin to the latest version yourself prior to using this library in production.

There are over 200 Google API services. The chances are good that you will not want them all. In order to avoid shipping these dependencies with your code, you can run the Google\Task\Composer::cleanup task and specify the services you want to keep in composer.json:

{
    "require": {
        "google/apiclient": "^2.15.0"
    },
    "scripts": {
        "pre-autoload-dump": "Google\\Task\\Composer::cleanup"
    },
    "extra": {
        "google/apiclient-services": [
            "Drive",
            "YouTube"
        ]
    }
}

This example will remove all services other than "Drive" and "YouTube" when composer update or a fresh composer install is run.

IMPORTANT: If you add any services back in composer.json, you will need to remove the vendor/google/apiclient-services directory explicitly for the change you made to have effect:

rm -r vendor/google/apiclient-services
composer update

NOTE: This command performs an exact match on the service name, so to keep YouTubeReporting and YouTubeAnalytics as well, you'd need to add each of them explicitly:

{
    "extra": {
        "google/apiclient-services": [
            "Drive",
            "YouTube",
            "YouTubeAnalytics",
            "YouTubeReporting"
        ]
    }
}

If you prefer not to use composer, you can download the package in its entirety. The Releases page lists all stable versions. Download any file with the name google-api-php-client-[RELEASE_NAME].zip for a package including this library and its dependencies.

Uncompress the zip file you download, and include the autoloader in your project:

require_once '/path/to/google-api-php-client/vendor/autoload.php';

For additional installation and setup instructions, see the documentation.

See the examples/ directory for examples of the key client features. You can view them in your browser by running the php built-in web server.

$ php -S localhost:8000 -t examples/

And then browsing to the host and port you specified (in the above example, http://localhost:8000).

// include your composer dependencies
require_once 'vendor/autoload.php';

$client = new Google\Client();
$client->setApplicationName("Client_Library_Examples");
$client->setDeveloperKey("YOUR_APP_KEY");

$service = new Google\Service\Books($client);
$query = 'Henry David Thoreau';
$optParams = [
  'filter' => 'free-ebooks',
];
$results = $service->volumes->listVolumes($query, $optParams);

foreach ($results->getItems() as $item) {
  echo $item['volumeInfo']['title'], "<br /> \n";
}

An example of this can be seen in examples/simple-file-upload.php.

1. Follow the instructions to Create Web Application Credentials

2. Download the JSON credentials

3. Set the path to these credentials using Google\Client::setAuthConfig:

   $client = new Google\Client();
   $client->setAuthConfig('/path/to/client_credentials.json');

4. Set the scopes required for the API you are going to call

   $client->addScope(Google\Service\Drive::DRIVE);

5. Set your application's redirect URI

   // Your redirect URI can be any registered URI, but in this example
   // we redirect back to this same page
   $redirect_uri = 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF'];
   $client->setRedirectUri($redirect_uri);

6. In the script handling the redirect URI, exchange the authorization code for an access token:

   if (isset($_GET['code'])) {
       $token = $client->fetchAccessTokenWithAuthCode($_GET['code']);
   }

An example of this can be seen in examples/service-account.php.

Some APIs (such as the YouTube Data API) do not support service accounts. Check with the specific API documentation if API calls return unexpected 401 or 403 errors.

1. Follow the instructions to Create a Service Account

2. Download the JSON credentials

3. Set the path to these credentials using the GOOGLE_APPLICATION_CREDENTIALS environment variable:

   putenv('GOOGLE_APPLICATION_CREDENTIALS=/path/to/service-account.json');

4. Tell the Google client to use your service account credentials to authenticate:

   $client = new Google\Client();
   $client->useApplicationDefaultCredentials();

5. Set the scopes required for the API you are going to call

   $client->addScope(Google\Service\Drive::DRIVE);

6. If you have delegated domain-wide access to the service account and you want to impersonate a user account, specify the email address of the user account using the method setSubject:

   $client->setSubject($user_to_impersonate);

If you want to a specific JSON key instead of using GOOGLE_APPLICATION_CREDENTIALS environment variable, you can do this:

$jsonKey = [
   'type' => 'service_account',
   // ...
];
$client = new Google\Client();
$client->setAuthConfig($jsonKey);

The classes used to call the API in google-api-php-client-services are autogenerated. They map directly to the JSON requests and responses found in the APIs Explorer.

A JSON request to the Datastore API would look like this:

POST https://datastore.googleapis.com/v1beta3/projects/YOUR_PROJECT_ID:runQuery?key=YOUR_API_KEY

{
    "query": {
        "kind": [{
            "name": "Book"
        }],
        "order": [{
            "property": {
                "name": "title"
            },
            "direction": "descending"
        }],
        "limit": 10
    }
}

Using this library, the same call would look something like this:

// create the datastore service class
$datastore = new Google\Service\Datastore($client);

// build the query - this maps directly to the JSON
$query = new Google\Service\Datastore\Query([
    'kind' => [
        [
            'name' => 'Book',
        ],
    ],
    'order' => [
        'property' => [
            'name' => 'title',
        ],
        'direction' => 'descending',
    ],
    'limit' => 10,
]);

// build the request and response
$request = new Google\Service\Datastore\RunQueryRequest(['query' => $query]);
$response = $datastore->projects->runQuery('YOUR_DATASET_ID', $request);

However, as each property of the JSON API has a corresponding generated class, the above code could also be written like this:

// create the datastore service class
$datastore = new Google\Service\Datastore($client);

// build the query
$request = new Google\Service\Datastore_RunQueryRequest();
$query = new Google\Service\Datastore\Query();
//   - set the order
$order = new Google\Service\Datastore_PropertyOrder();
$order->setDirection('descending');
$property = new Google\Service\Datastore\PropertyReference();
$property->setName('title');
$order->setProperty($property);
$query->setOrder([$order]);
//   - set the kinds
$kind = new Google\Service\Datastore\KindExpression();
$kind->setName('Book');
$query->setKinds([$kind]);
//   - set the limit
$query->setLimit(10);

// add the query to the request and make the request
$request->setQuery($query);
$response = $datastore->projects->runQuery('YOUR_DATASET_ID', $request);

The method used is a matter of preference, but it will be very difficult to use this library without first understanding the JSON syntax for the API, so it is recommended to look at the APIs Explorer before using any of the services here.

If Google Authentication is desired for external applications, or a Google API is not available yet in this library, HTTP requests can be made directly.

If you are installing this client only to authenticate your own HTTP client requests, you should use google/auth instead.

The authorize method returns an authorized Guzzle Client, so any request made using the client will contain the corresponding authorization.

// create the Google client
$client = new Google\Client();

/**
 * Set your method for authentication. Depending on the API, This could be
 * directly with an access token, API key, or (recommended) using
 * Application Default Credentials.
 */
$client->useApplicationDefaultCredentials();
$client->addScope(Google\Service\Plus::PLUS_ME);

// returns a Guzzle HTTP Client
$httpClient = $client->authorize();

// make an HTTP request
$response = $httpClient->get('https://www.googleapis.com/plus/v1/people/me');