diff --git a/phpBB/composer.json b/phpBB/composer.json
index fb121c9f68..21b0b5e7ba 100644
--- a/phpBB/composer.json
+++ b/phpBB/composer.json
@@ -28,6 +28,7 @@
 		"php": "^7.3 || ^8.0",
 		"ext-json": "*",
 		"ext-mbstring": "*",
+		"ext-pdo": "*",
 		"bantu/ini-get-wrapper": "~1.0",
 		"chita/topological_sort": "^3.0",
 		"composer/composer": "^2.0",
diff --git a/phpBB/phpbb/db/doctrine/connection_factory.php b/phpBB/phpbb/db/doctrine/connection_factory.php
index aa29a6bcb6..93c5b8c03e 100644
--- a/phpBB/phpbb/db/doctrine/connection_factory.php
+++ b/phpBB/phpbb/db/doctrine/connection_factory.php
@@ -35,7 +35,7 @@ class connection_factory
 	 * @return Connection Doctrine DBAL connection.
 	 *
 	 * @throws runtime_exception		If the database connection could not be established.
-	 * @throws InvalidArgumentException	If $driver_name is not a valid phpBB database driver.
+	 * @throws InvalidArgumentException	If the provided driver name is not a valid phpBB database driver.
 	 */
 	public static function get_connection(config_php_file $config) : Connection
 	{
@@ -69,7 +69,7 @@ class connection_factory
 	 * @return Connection Doctrine DBAL connection.
 	 *
 	 * @throws runtime_exception		If the database connection could not be established.
-	 * @throws InvalidArgumentException	If $driver_name is not a valid phpBB database driver.
+	 * @throws InvalidArgumentException	If $driver is not a valid phpBB database driver.
 	 */
 	public static function get_connection_from_params(
 		string $driver,
diff --git a/phpBB/phpbb/db/doctrine/driver_convertor.php b/phpBB/phpbb/db/doctrine/driver_convertor.php
index cf0f296538..b729b1065e 100644
--- a/phpBB/phpbb/db/doctrine/driver_convertor.php
+++ b/phpBB/phpbb/db/doctrine/driver_convertor.php
@@ -41,23 +41,23 @@ trait driver_convertor
 			case 'mssql_odbc':
 			case 'mssqlnative':
 				$name = 'pdo_sqlsrv';
-				break;
+			break;
 
 			case 'mysqli':
 				$name = 'pdo_mysql';
-				break;
+			break;
 
 			case 'oracle':
 				$name = 'oci8';
-				break;
+			break;
 
 			case 'postgres':
 				$name = 'pdo_pgsql';
-				break;
+			break;
 
 			case 'sqlite3':
 				$name = 'pdo_sqlite';
-				break;
+			break;
 
 			default:
 				throw new InvalidArgumentException('Invalid phpBB database driver provided: ' . $driver_name);
diff --git a/phpBB/phpbb/install/database_task.php b/phpBB/phpbb/install/database_task.php
index 7405e3d075..81864773c5 100644
--- a/phpBB/phpbb/install/database_task.php
+++ b/phpBB/phpbb/install/database_task.php
@@ -29,14 +29,10 @@ use phpbb\install\helper\iohandler\iohandler_interface;
  */
 abstract class database_task extends task_base
 {
-	/**
-	 * @var Connection
-	 */
+	/** @var Connection */
 	private $conn;
 
-	/**
-	 * @var iohandler_interface
-	 */
+	/** @var iohandler_interface */
 	private $io;
 
 	/**
diff --git a/phpBB/phpbb/install/module/install_database/task/add_default_data.php b/phpBB/phpbb/install/module/install_database/task/add_default_data.php
index 6ea02622fa..bf64f2276a 100644
--- a/phpBB/phpbb/install/module/install_database/task/add_default_data.php
+++ b/phpBB/phpbb/install/module/install_database/task/add_default_data.php
@@ -68,7 +68,7 @@ class add_default_data extends database_task
 								language $language,
 								string $root_path)
 	{
-		$this->db 				= self::get_doctrine_connection($db_helper, $config);
+		$this->db				= self::get_doctrine_connection($db_helper, $config);
 		$this->database_helper	= $db_helper;
 		$this->config			= $config;
 		$this->language			= $language;