README

A modern PHP API client library for BoardGameGeek.com using the XML API2.

Installation

Require the package with Composer:

composer require jan-wennrich/bgg-api

Usage

Creating the client

Quickstart:

use JanWennrich\BoardGameGeekApi\Client;

$client = Client::autocreate();

This creates a Client instance with sane defaults, suitable for most users.

Alternatively you may use the constructor to configure the client to your needs. You may pass:

• a custom PSR-18 HTTP client plus PSR-17 request/stream factories
• a \JanWennrich\BoardGameGeekApi\RetryConfig to configure retry behavior
• a custom User-Agent string
• a Psr\Log\LoggerInterface

Authentication

Recently the BoardGameGeek API requires authentication to access it.

You must authenticate via an BoardGameGeek API token (recommended) or a BoardGameGeek username & password.

API Token

An API Token can be obtained from BoardGameGeek: https://boardgamegeek.com/using_the_xml_api

$client->setAuthorization($apiToken);

Username & Password

Important

Authenticating via username & passwords limits the access to resources of the given username.
So you can access the user's collection or plays for example but no general resources like boardgames.

$client->login($username, $password);

The login is stored during runtime, so you have to log in again after the program terminates.

Endpoints

Things (BoardGames)

To get a single Thing you can use the following method:

$client->getThing(string $id, bool $stats = false, bool $versions = false): ?Thing

To get multiple Things at once, use the following method:

$client->getThings(array $ids, bool $stats = false, bool $versions = false): Thing[]

A single Thing provides the following API:

• Basic info:
  • getId(), getType(), isType($type)
  • getName(), getDescription()
  • getImage(), getThumbnail()
  • getYearPublished()
  • getMinPlayers(), getMaxPlayers()
  • getPlayingTime(), getMinPlayTime(), getMaxPlayTime()
  • getMinAge()
• Links & related entities:
  • getBoardgameCategories(), getBoardgameMechanics()
  • getBoardgameDesigners(), getBoardgameArtists(), getBoardgamePublishers()
  • getBoardgameExpansions()
  • getBoardgameVersions()
  • getLinks() (raw link objects)
  • getAlternateNames()
  • getBoardgameBasegame()
• Stats (if stats=true when requesting the Thing):
  • getRatingAverage()
  • getWeightAverage()
  • getRank()
  • getLanguageDependenceLevel()

Example: Get the thumbnails of "Ark Nova" (ID 342942) and "Gloomhaven" (ID 174430)

$things = $client->getThings([342942, 174430]);

foreach ($things as $thing) {
    echo $thing->getThumbnail() . PHP_EOL; 
}

Search

To search for something you can use the following method:

$client->search(string $query, bool $exact = false, string $type = Type::BOARDGAME): Search\Query

Each item in the Seach\Query is a Search\Result with:

• getId(), getType(), isType($type)
• getName()
• getYearPublished()

Example: Search for the board game "Terraforming Mars" and list the names of search results

use JanWennrich\BoardGameGeekApi\Type;

$query = $client->search('Terraforming Mars', exact: true, type: Type::BOARDGAME);

echo count($query) . PHP_EOL;

$first = $query[0];
if ($first) {
    echo $first->getName() . PHP_EOL;
}

Hot items

To get hot items you can use this method:

$client->getHotItems(string $type = Type::BOARDGAME): HotItem[]

A HotItem provides these getters:

• getId()
• getRank()
• getName()
• getYearPublished()
• getThumbnail()

Example: Get hot items and list their ranks and names

$hot = $client->getHotItems();
foreach ($hot as $item) {
    echo $item->getRank() . ': ' . $item->getName() . PHP_EOL;
}

User

To get a use you can use this method:

$client->getUser(string $name): ?User

A User provides the following getters:

• getId(), getLogin(), getName()
• getFirstName(), getLastName()
• getAvatar(), getCountry()
• getYearRegistered()

Example: Get the avatar of user "Klabauterjan"

$user = $client->getUser('Klabauterjan');
echo $user->getAvatar();

Collection

To get a collection, you can use this method:

$client->getCollection(array $parameters): Collection

All parameters as specified by the BoardGameGeek API are supported: https://boardgamegeek.com/wiki/page/BGG_XML_API2#toc13

Each entry of a Collection is a Collection\Item with these getters:

• object info: getObjectType(), getObjectId(), getSubtype(), getCollId()
• metadata: getName(), getYearPublished(), getImage(), getThumbnail()
• stats: getNumPlays(), getRatingAverage()
• players/time: getMinPlayers(), getMaxPlayers(), getPlayingTime(), getMinPlayTime(), getMaxPlayTime()
• status: getStatus(): Collection\ItemStatus

A Collection\ItemStatus provides this API:

• flags: isOwn(), isPrevOwned(), isForTrade(), isWant(), isWantToPlay(), isWantToBuy(), isWishlist(), isPreordered()
• wishlist info: getWishlistPriority()
• timestamps: getLastModified()

Example: Get all boardgames owned by user "Klabauterjan" and list them with their name and publish date

$collection = $client->getCollection([
    'username' => 'Klabauterjan',
    'owned' => 1,
    'stats' => 1
]);

echo $collection->count() . PHP_EOL;

foreach ($collection as $item) {
    echo $item->getName() . PHP_EOL;
    echo $item->getYearPublished() . PHP_EOL;
}

Plays

To get plays, you can use this method:

$client->getPlays(array $parameters): Play[]

All parameters as specified by the BoardGameGeek API are supported: https://boardgamegeek.com/wiki/page/BGG_XML_API2#toc12

A Play object provides these getters:

• core: getId(), getDate(), getQuantity(), getLength()
• flags: isIncomplete(), isNoWinStats()
• location/comments: getLocation(), getComments()
• item info: getObjectType(), getObjectId(), getObjectName(), getSubtypes()
• players: getPlayers(): Player[]

A Player object provides these getters:

• identity: getUsername(), getUserid(), getName()
• game info: getStartPosition(), getColor(), getScore(), getRating()
• flags: isNew(), isWin()

Example: Get plays of user "Klabauterjan" and list their date, name of the game and the names of players

$plays = $client->getPlays(['username' => 'Klabauterjan']);

foreach ($plays as $play) {
    echo $play->getDate() . ' - ' . $play->getObjectName() . PHP_EOL;

    foreach ($play->getPlayers() as $player) {
        echo '  - ' . ($player->getName() ?: $player->getUsername()) . PHP_EOL;
    }
}

Reliability / Retries

The BoardGameGeek API does not immediately provide results to most requests.
Instead it returns a HTTP 202 response and will return the actual data with a later request.

To simplify this, the client has built-in retry behavior when fetching data:

• Retries up to 3 times
• Waits 5 seconds between attempts by default (configurable)
• Automatically retries when BGG responds with HTTP 202 (queued response)
• Retries on transport errors and 5xx responses
• Does not keep retrying on typical 4xx client errors (e.g. missing authentication)

If all attempts fail, an Exception is thrown.

You can customize retry behavior via RetryConfig:

use JanWennrich\BoardGameGeekApi\Client;
use JanWennrich\BoardGameGeekApi\RetryConfig;

$client = Client::autocreate(
    retryConfig: new RetryConfig(
        maxAttempts: 5,
        initialExponentialRetryDelayInSeconds: 1,
    )
);

Testing & Development

To develop/test this library, do the following:

1. Clone the repository
2. Install dependencies (composer install)

Tests can be executed by calling:

composer test

To opt in to live API tests, the following environment variables with credentials have to be set, when running composer test:

• BGG_AUTH_TOKEN
• BGG_USERNAME
• BGG_PASSWORD

Fixture Recording

To capture real API responses as XML fixtures, use the fixture recorder command:

BGG_AUTH_TOKEN=... BGG_USERNAME=... BGG_PASSWORD=... php tests/record-fixtures.php

The recorder writes fixtures into tests/fixtures/<endpoint>/ and requires all three environment variables to be set.

The library uses the following tools to ensure functionality & stability:

• PHPUnit for testing
• PHPStan for static analysis
• PHP CS Fixer to enforce code style
• Rector for automated refactorings
• Composer Dependency Analyser for finding unused or unspecified requirements
• GitHub Actions CI for automatic testing

Credits

This library is a fork of castro732/bggxmlapi2 which is a fork of nataniel/bggxmlapi2.
Thanks to the original authors for the foundation.

The XML Schema (.xsd) files in tests/xsd/ were taken from tnaskali/bgg-api.

License

MIT License

See LICENSE for details.