#### Summary Since dbal 4, `'platform'` key cannot be used in `DriverManager::getConnection($params)` ([release note](https://github.com/doctrine/dbal/blob/4.0.x/UPGRADE.md#bc-break-removed-support-for-the-platform-parameter-of-the-wrapper-connection)), but it is [still present in documentation](https://www.doctrine-project.org/projects/doctrine-dbal/en/4.0/reference/platforms.html).
Summary
Since dbal 4,
'platform'key cannot be used inDriverManager::getConnection($params)(release note), but it is still present in documentation.