README

PHP library for VK API interaction, includes OAuth 2.0 authorization and API methods. Full VK API features documentation can be found here.

This library has been created using the VK API JSON Schema. It can be found here. It uses VK API version 5.131

1. Prerequisites

• PHP 8.1

2. Installation

The VK PHP SDK can be installed using Composer by running the following command:

composer require vkcom/vk-php-sdk

3. Initialization

Create VKApiClient object using the following code:

$vk = new \VK\Client\VKApiClient();

Also you can initialize VKApiClient with different API version and different language like this:

$vk = new VKApiClient('5.131');

$vk = new VKApiClient('5.131', \VK\Client\Enums\VKLanguage::ENGLISH);

4. Authorization

The library provides the authorization flows for user based on OAuth 2.0 protocol implementation in vk.com API. Please read the full documentation before you start.

4.1. Authorization Code Flow

OAuth 2.0 Authorization Code Flow allows calling methods from the server side.

This flow includes two steps — obtaining an authorization code and exchanging the code for an access token. Primarily you should obtain the "code" (manual user access and manual community access) by redirecting the user to the authorization page using the following method:

Create VKOAuth object first:

$oauth = new \VK\OAuth\VKOAuth();

4.1.1. For getting user access key use following command:

$oauth = new \VK\OAuth\VKOAuth();
$client_id = 1234567;
$redirect_uri = 'https://example.com/vk';
$display = \VK\OAuth\VKOAuthDisplay::PAGE;
$scope = [\VK\OAuth\Scopes\VKOAuthUserScope::WALL, \VK\OAuth\Scopes\VKOAuthUserScope::GROUPS];
$state = 'secret_state_code';

$browser_url = $oauth->getAuthorizeUrl(\VK\OAuth\VKOAuthResponseType::CODE, $client_id, $redirect_uri, $display, $scope, $state);

4.1.2. Or if you want to get community access key use:

$oauth = new \VK\OAuth\VKOAuth();
$client_id = 1234567;
$redirect_uri = 'https://example.com/vk';
$display = \VK\OAuth\VKOAuthDisplay::PAGE;
$scope = [\VK\OAuth\Scopes\VKOAuthGroupScope::MESSAGES];
$state = 'secret_state_code';
$groups_ids = [1, 2];

$browser_url = $oauth->getAuthorizeUrl(\VK\OAuth\VKOAuthResponseType::CODE, $client_id, $redirect_uri, $display, $scope, $state, $groups_ids);

User access key and community access key uses different values inside scope array

After successful authorization user's browser will be redirected to the specified redirect_uri. Meanwhile the code will be sent as a GET parameter to the specified address:

https://example.com?code=CODE

Then use this method to get the access token:

$oauth = new \VK\OAuth\VKOAuth();
$client_id = 1234567;
$client_secret = 'SDAScasd'
$redirect_uri = 'https://example.com/vk';
$code = 'CODE';

$response = $oauth->getAccessToken($client_id, $client_secret, $redirect_uri, $code);
$access_token = $response['access_token'];

The redirect_uri should be the URL that was used to get a code at the first step.

4.2. Implicit flow

In difference with authorization code flow this flow gives you temporary access key.

Read more about user access key and community access key.

First step to get access using Implicit flow is creating VKOauth object:

$oauth = new \VK\OAuth\VKOAuth();

4.2.1. For getting user access key use following command:

$oauth = new \VK\OAuth\VKOAuth();
$client_id = 1234567;
$redirect_uri = 'https://example.com/vk';
$display = \VK\OAuth\VKOAuthDisplay::PAGE;
$scope = [\VK\OAuth\Scopes\VKOAuthUserScope::WALL, \VK\OAuth\Scopes\VKOAuthUserScope::GROUPS];
$state = 'secret_state_code';
$revoke_auth = true;

$browser_url = $oauth->getAuthorizeUrl(\VK\OAuth\VKOAuthResponseType::TOKEN, $client_id, $redirect_uri, $display, $scope, $state, null, $revoke_auth);

If you want to make user getting access anyway, set revoke_auth as true.

4.2.2. Or if you want to get community access key use:

$oauth = new \VK\OAuth\VKOAuth();
$client_id = 1234567;
$redirect_uri = 'https://example.com/vk';
$display = \VK\OAuth\VKOAuthDisplay::PAGE;
$scope = [\VK\OAuth\Scopes\VKOAuthGroupScope::MESSAGES];
$state = 'secret_state_code';
$groups_ids = [1, 2];

$browser_url = $oauth->getAuthorizeUrl(\VK\OAuth\VKOAuthResponseType::TOKEN, $client_id, $redirect_uri, $display, $scope, $state, $groups_ids);

Arguments are similar with authorization code flow

After successful authorization user's browser will be redirected to the specified redirect_uri. Meanwhile the access token will be sent as a fragment parameter to the specified address:

For user access key will be:

https://example.com#access_token=533bacf01e11f55b536a565b57531ad114461ae8736d6506a3&expires_in=86400&user_id=8492&state=123456

And for community access key:

https://example.com#access_token_XXXXXX=533bacf01e11f55b536a565b57531ad114461ae8736d6506a3&expires_in=86400

access_token is your new access token.
expires_in is lifetime of access token in seconds.
user_id is user identifier.
state is string from authorize method.
access_token_XXXXXX is community access token where XXXXXX is community identifier.

5. API Requests

You can find the full list of VK API methods here.

5.1. Request sample

Example of calling method users.get:

$vk = new \VK\Client\VKApiClient();
$response = $vk->users()->get($access_token, [
    'user_ids'  => [1, 210700286],
    'fields'    => ['city', 'photo'],
]);

5.2. Uploading Photos into a Private Message

Please read the full manual before the start.

Call photos.getMessagesUploadServer to receive an upload address:

$vk = new \VK\Client\VKApiClient();
$address = $vk->photos()->getMessagesUploadServer('{access_token}');

Then use upload() method to send files to the upload_url address received in the previous step:

$vk = new \VK\Client\VKApiClient();
$photo = $vk->getRequest()->upload($address['upload_url'], 'photo', 'photo.jpg');

You will get a JSON object with server, photo, hash fields. To save a photo call **photos.saveMessagesPhoto ** with these three parameters:

$vk = new \VK\Client\VKApiClient();
$response_save_photo = $vk->photos()->saveMessagesPhoto($access_token, [
    'server' => $photo['server'],
    'photo'  => $photo['photo'],
    'hash'   => $photo['hash'],
]);

Then you can use owner_id and id parameters from the last response to create an attachment of the uploaded photo.

5.3. Uploading Video Files

Please read the full manual before the start.

Call video.save to get a video upload server address:

$vk = new \VK\Client\VKApiClient();
$address = $vk->video()->save($access_token, [
    'name' => 'My video',
]);

Send a file to upload_url received previously calling upload() method:

$vk = new \VK\Client\VKApiClient();
$video = $vk->getRequest()->upload($address['upload_url'], 'video_file', 'video.mp4');

Videos are processed for some time after uploading.

6. Groups updates

6.1. Long Poll

Enable Long Poll for your group and specify which events should be tracked by calling the following API method:

$vk = new \VK\Client\VKApiClient();
$vk->groups()->setLongPollSettings($access_token, [
  'group_id'      => 159895463,
  'enabled'       => 1,
  'message_new'   => 1,
  'wall_post_new' => 1,
]);

Override methods from VK\CallbackApi\VKCallbackApiHandler class for handling events:

class CallbackApiMyHandler extends VK\CallbackApi\VKCallbackApiHandler {
    public function messageNew($object) {
        echo 'New message: ' . $object['body'];
    }
    
    public function wallPostNew($object) {
        echo 'New wall post: ' . $object['text'];
    }
}

To start listening to LongPoll events, create an instance of your CallbackApiMyHandler class, instance of VK\CallbackApi\LongPoll\VKCallbackApiLongPollExecutor class and call method listen():

$vk = new \VK\Client\VKApiClient();
$access_token = 'asdj4iht2i4ntokqngoiqn3ripogqr';
$group_id = 159895463;
$wait = 25;

$handler = new CallbackApiMyHandler();
$executor = new \VK\CallbackApi\VKCallbackApiLongPollExecutor($vk, $access_token, $group_id, $handler, $wait);
$executor->listen();

Parameter wait is the waiting period.

While calling function listen() you can also specify the number of the event from which you want to receive data. The default value is the number of the last event.

Example:

$vk = new \VK\Client\VKApiClient();
$access_token = 'asdj4iht2i4ntokqngoiqn3ripogqr';
$group_id = 159895463;
$timestamp = 12;
$wait = 25;

$executor = new \VK\CallbackApi\VKCallbackApiLongPollExecutor($vk, $access_token, $group_id, $handler, $wait);
$executor->listen($timestamp);

6.2. Callback API

CallbackApi handler will wait for event notifications form VK. Once an event has occurred, you will be notified of it and will be able to handle it. More information here.

To start using Callback API you need to configure it under the "Manage community" tab of your community page.

The first step is confirming your domain. VK sends a request to your server with the event type confirmation and you need to send back a confirmation string. For other types of events you need to send back ok string.

Take a look at this example:

class ServerHandler extends \VK\CallbackApi\VKCallbackApiServerHandler {
    const SECRET = 'ab12aba';
    const GROUP_ID = 123999;
    const CONFIRMATION_TOKEN = 'e67anm1';

    function confirmation(int $group_id, ?string $secret) {
        if ($secret === static::SECRET && $group_id === static::GROUP_ID) {
            echo static::CONFIRMATION_TOKEN;
        }
    }
    
    public function messageNew(int $group_id, ?string $secret, array $object) {
        echo 'ok';
    }
}

$handler = new ServerHandler();
$data = json_decode(file_get_contents('php://input'));
$handler->parse($data);

To handle events you need to override methods from VK\CallbackApi\Server\VKCallbackApiServerHandler class as shown above.

confirmation event handler has 2 arguments: group id, and secret key. You need to override this method.