51 files changed, 474 insertions, 279 deletions
diff --git a/.gitignore b/.gitignore
index 4093aeb56d..c757210654 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,7 +2,7 @@
 /phpunit.xml
 /phpBB/cache/*.html
 /phpBB/cache/*.php
-/phpBB/cache/queue.php.lock
+/phpBB/cache/*.lock
 /phpBB/composer.phar
 /phpBB/config.php
 /phpBB/config_dev.php
diff --git a/phpBB/common.php b/phpBB/common.php
index e99b9edee5..add0b07726 100644
--- a/phpBB/common.php
+++ b/phpBB/common.php
@@ -71,7 +71,6 @@ require($phpbb_root_path . 'includes/functions_content.' . $phpEx);
 require($phpbb_root_path . 'includes/functions_container.' . $phpEx);
 
 require($phpbb_root_path . 'includes/constants.' . $phpEx);
-require($phpbb_root_path . 'includes/db/' . ltrim($dbms, 'dbal_') . '.' . $phpEx);
 require($phpbb_root_path . 'includes/utf/utf_tools.' . $phpEx);
 
 // Set PHP error handler to ours
diff --git a/phpBB/download/file.php b/phpBB/download/file.php
index 73b9e0a9f2..8c282e36d7 100644
--- a/phpBB/download/file.php
+++ b/phpBB/download/file.php
@@ -43,7 +43,6 @@ if (isset($_GET['avatar']))
 
 	require($phpbb_root_path . 'includes/class_loader.' . $phpEx);
 
-	require($phpbb_root_path . 'includes/db/' . $dbms . '.' . $phpEx);
 	require($phpbb_root_path . 'includes/constants.' . $phpEx);
 	require($phpbb_root_path . 'includes/functions.' . $phpEx);
 	require($phpbb_root_path . 'includes/functions_container.' . $phpEx);
diff --git a/phpBB/includes/acp/info/acp_extensions.php b/phpBB/includes/acp/info/acp_extensions.php
index f5953fb1dd..03d7059165 100644
--- a/phpBB/includes/acp/info/acp_extensions.php
+++ b/phpBB/includes/acp/info/acp_extensions.php
@@ -16,10 +16,10 @@ class acp_extensions_info
 	{
 		return array(
 			'filename'	=> 'acp_extensions',
-			'title'		=> 'ACP_EXTENSIONS',
+			'title'		=> 'ACP_EXTENSIONS_MANAGEMENT',
 			'version'	=> '1.0.0',
 			'modes'		=> array(
-				'main'		=> array('title' => 'ACP_EXTENSIONS', 'auth' => 'acl_a_extensions', 'cat' => array('ACP_GENERAL_TASKS')),
+				'main'		=> array('title' => 'ACP_EXTENSIONS', 'auth' => 'acl_a_extensions', 'cat' => array('ACP_EXTENSIONS_MANAGEMENT')),
 			),
 		);
 	}
diff --git a/phpBB/includes/acp/info/acp_language.php b/phpBB/includes/acp/info/acp_language.php
index 85dfb119ea..7f33a22fa6 100644
--- a/phpBB/includes/acp/info/acp_language.php
+++ b/phpBB/includes/acp/info/acp_language.php
@@ -19,7 +19,7 @@ class acp_language_info
 			'title'		=> 'ACP_LANGUAGE',
 			'version'	=> '1.0.0',
 			'modes'		=> array(
-				'lang_packs'		=> array('title' => 'ACP_LANGUAGE_PACKS', 'auth' => 'acl_a_language', 'cat' => array('ACP_GENERAL_TASKS')),
+				'lang_packs'		=> array('title' => 'ACP_LANGUAGE_PACKS', 'auth' => 'acl_a_language', 'cat' => array('ACP_LANGUAGE')),
 			),
 		);
 	}
diff --git a/phpBB/includes/config/db.php b/phpBB/includes/config/db.php
index 45f9f1cb21..b18369a479 100644
--- a/phpBB/includes/config/db.php
+++ b/phpBB/includes/config/db.php
@@ -29,7 +29,7 @@ class phpbb_config_db extends phpbb_config
 
 	/**
 	* Database connection
-	* @var dbal
+	* @var phpbb_db_driver
 	*/
 	protected $db;
 
@@ -42,11 +42,11 @@ class phpbb_config_db extends phpbb_config
 	/**
 	* Creates a configuration container with a default set of values
 	*
-	* @param dbal                         $db    Database connection
+	* @param phpbb_db_driver              $db    Database connection
 	* @param phpbb_cache_driver_interface $cache Cache instance
 	* @param string                       $table Configuration table name
 	*/
-	public function __construct(dbal $db, phpbb_cache_driver_interface $cache, $table)
+	public function __construct(phpbb_db_driver $db, phpbb_cache_driver_interface $cache, $table)
 	{
 		$this->db = $db;
 		$this->cache = $cache;
diff --git a/phpBB/includes/cron/task/core/prune_all_forums.php b/phpBB/includes/cron/task/core/prune_all_forums.php
index ee0b5f7626..2c5d38cec0 100644
--- a/phpBB/includes/cron/task/core/prune_all_forums.php
+++ b/phpBB/includes/cron/task/core/prune_all_forums.php
@@ -37,9 +37,9 @@ class phpbb_cron_task_core_prune_all_forums extends phpbb_cron_task_base
 	* @param string $phpbb_root_path The root path
 	* @param string $php_ext The PHP extension
 	* @param phpbb_config $config The config
-	* @param dbal $db The db connection
+	* @param phpbb_db_driver $db The db connection
 	*/
-	public function __construct($phpbb_root_path, $php_ext, phpbb_config $config, dbal $db)
+	public function __construct($phpbb_root_path, $php_ext, phpbb_config $config, phpbb_db_driver $db)
 	{
 		$this->phpbb_root_path = $phpbb_root_path;
 		$this->php_ext = $php_ext;
diff --git a/phpBB/includes/cron/task/core/prune_forum.php b/phpBB/includes/cron/task/core/prune_forum.php
index fa7a761d88..e3c497f072 100644
--- a/phpBB/includes/cron/task/core/prune_forum.php
+++ b/phpBB/includes/cron/task/core/prune_forum.php
@@ -47,9 +47,9 @@ class phpbb_cron_task_core_prune_forum extends phpbb_cron_task_base implements p
 	* @param string $phpbb_root_path The root path
 	* @param string $php_ext The PHP extension
 	* @param phpbb_config $config The config
-	* @param dbal $db The db connection
+	* @param phpbb_db_driver $db The db connection
 	*/
-	public function __construct($phpbb_root_path, $php_ext, phpbb_config $config, dbal $db)
+	public function __construct($phpbb_root_path, $php_ext, phpbb_config $config, phpbb_db_driver $db)
 	{
 		$this->phpbb_root_path = $phpbb_root_path;
 		$this->php_ext = $php_ext;
diff --git a/phpBB/includes/cron/task/core/tidy_search.php b/phpBB/includes/cron/task/core/tidy_search.php
index fdbe31346e..3ec25aa021 100644
--- a/phpBB/includes/cron/task/core/tidy_search.php
+++ b/phpBB/includes/cron/task/core/tidy_search.php
@@ -38,10 +38,10 @@ class phpbb_cron_task_core_tidy_search extends phpbb_cron_task_base
 	* @param string $php_ext The PHP extension
 	* @param phpbb_auth $auth The auth
 	* @param phpbb_config $config The config
-	* @param dbal $db The db connection
+	* @param phpbb_db_driver $db The db connection
 	* @param phpbb_user $user The user
 	*/
-	public function __construct($phpbb_root_path, $php_ext, phpbb_auth $auth, phpbb_config $config, dbal $db, phpbb_user $user)
+	public function __construct($phpbb_root_path, $php_ext, phpbb_auth $auth, phpbb_config $config, phpbb_db_driver $db, phpbb_user $user)
 	{
 		$this->phpbb_root_path = $phpbb_root_path;
 		$this->php_ext = $php_ext;
diff --git a/phpBB/includes/db/db_tools.php b/phpBB/includes/db/db_tools.php
index 6df3aac9ce..2bb016cebd 100644
--- a/phpBB/includes/db/db_tools.php
+++ b/phpBB/includes/db/db_tools.php
@@ -300,7 +300,7 @@ class phpbb_db_tools
 	/**
 	* Constructor. Set DB Object and set {@link $return_statements return_statements}.
 	*
-	* @param phpbb_dbal	$db					DBAL object
+	* @param phpbb_db_driver	$db					Database connection
 	* @param bool		$return_statements	True if only statements should be returned and no SQL being executed
 	*/
 	function phpbb_db_tools(&$db, $return_statements = false)
diff --git a/phpBB/includes/db/dbal.php b/phpBB/includes/db/driver/driver.php
index ef1dd7d14d..25daa7243d 100644
--- a/phpBB/includes/db/dbal.php
+++ b/phpBB/includes/db/driver/driver.php
@@ -19,7 +19,7 @@ if (!defined('IN_PHPBB'))
 * Database Abstraction Layer
 * @package dbal
 */
-class dbal
+class phpbb_db_driver
 {
 	var $db_connect_id;
 	var $query_result;
@@ -72,17 +72,17 @@ class dbal
 	/**
 	* Constructor
 	*/
-	function dbal()
+	function __construct()
 	{
 		$this->num_queries = array(
-			'cached'		=> 0,
-			'normal'		=> 0,
-			'total'			=> 0,
+			'cached'	=> 0,
+			'normal'	=> 0,
+			'total'		=> 0,
 		);
 
 		// Fill default sql layer based on the class being called.
 		// This can be changed by the specified layer itself later if needed.
-		$this->sql_layer = substr(get_class($this), 5);
+		$this->sql_layer = substr(get_class($this), strlen('phpbb_db_driver_'));
 
 		// Do not change this please! This variable is used to easy the use of it - and is hardcoded.
 		$this->any_char = chr(0) . '%';
@@ -1042,8 +1042,3 @@ class dbal
 		return $rows_total;
 	}
 }
-
-/**
-* This variable holds the class name to use later
-*/
-$sql_db = (!empty($dbms)) ? 'dbal_' . basename($dbms) : 'dbal';
diff --git a/phpBB/includes/db/firebird.php b/phpBB/includes/db/driver/firebird.php
index 5728eb901c..a55175c345 100644
--- a/phpBB/includes/db/firebird.php
+++ b/phpBB/includes/db/driver/firebird.php
@@ -15,14 +15,12 @@ if (!defined('IN_PHPBB'))
 	exit;
 }
 
-include_once($phpbb_root_path . 'includes/db/dbal.' . $phpEx);
-
 /**
 * Firebird/Interbase Database Abstraction Layer
 * Minimum Requirement is Firebird 2.1
 * @package dbal
 */
-class dbal_firebird extends dbal
+class phpbb_db_driver_firebird extends phpbb_db_driver
 {
 	var $last_query_text = '';
 	var $service_handle = false;
diff --git a/phpBB/includes/db/mssql.php b/phpBB/includes/db/driver/mssql.php
index 235c48d3f0..ac957e7698 100644
--- a/phpBB/includes/db/mssql.php
+++ b/phpBB/includes/db/driver/mssql.php
@@ -15,14 +15,12 @@ if (!defined('IN_PHPBB'))
 	exit;
 }
 
-include_once($phpbb_root_path . 'includes/db/dbal.' . $phpEx);
-
 /**
 * MSSQL Database Abstraction Layer
 * Minimum Requirement is MSSQL 2000+
 * @package dbal
 */
-class dbal_mssql extends dbal
+class phpbb_db_driver_mssql extends phpbb_db_driver
 {
 	var $connect_error = '';
 
diff --git a/phpBB/includes/db/mssql_odbc.php b/phpBB/includes/db/driver/mssql_odbc.php
index 2194de4a5e..13e74e66d4 100644
--- a/phpBB/includes/db/mssql_odbc.php
+++ b/phpBB/includes/db/driver/mssql_odbc.php
@@ -15,8 +15,6 @@ if (!defined('IN_PHPBB'))
 	exit;
 }
 
-include_once($phpbb_root_path . 'includes/db/dbal.' . $phpEx);
-
 /**
 * Unified ODBC functions
 * Unified ODBC functions support any database having ODBC driver, for example Adabas D, IBM DB2, iODBC, Solid, Sybase SQL Anywhere...
@@ -28,7 +26,7 @@ include_once($phpbb_root_path . 'includes/db/dbal.' . $phpEx);
 *
 * @package dbal
 */
-class dbal_mssql_odbc extends dbal
+class phpbb_db_driver_mssql_odbc extends phpbb_db_driver
 {
 	var $last_query_text = '';
 	var $connect_error = '';
diff --git a/phpBB/includes/db/mssqlnative.php b/phpBB/includes/db/driver/mssqlnative.php
index 4a969828e7..4b1639aba2 100644
--- a/phpBB/includes/db/mssqlnative.php
+++ b/phpBB/includes/db/driver/mssqlnative.php
@@ -19,8 +19,6 @@ if (!defined('IN_PHPBB'))
 	exit;
 }
 
-include_once($phpbb_root_path . 'includes/db/dbal.' . $phpEx);
-
 /**
  * Prior to version 1.1 the SQL Server Native PHP driver didn't support sqlsrv_num_rows, or cursor based seeking so we recall all rows into an array
  * and maintain our own cursor index into that array.
@@ -193,7 +191,7 @@ class result_mssqlnative
 /**
 * @package dbal
 */
-class dbal_mssqlnative extends dbal
+class phpbb_db_driver_mssqlnative extends phpbb_db_driver
 {
 	var $m_insert_id = NULL;
 	var $last_query_text = '';
diff --git a/phpBB/includes/db/mysql.php b/phpBB/includes/db/driver/mysql.php
index dcdeec0401..6fc6fab483 100644
--- a/phpBB/includes/db/mysql.php
+++ b/phpBB/includes/db/driver/mysql.php
@@ -15,8 +15,6 @@ if (!defined('IN_PHPBB'))
 	exit;
 }
 
-include_once($phpbb_root_path . 'includes/db/dbal.' . $phpEx);
-
 /**
 * MySQL4 Database Abstraction Layer
 * Compatible with:
@@ -26,7 +24,7 @@ include_once($phpbb_root_path . 'includes/db/dbal.' . $phpEx);
 * MySQL 5.0+
 * @package dbal
 */
-class dbal_mysql extends dbal
+class phpbb_db_driver_mysql extends phpbb_db_driver
 {
 	var $multi_insert = true;
 	var $connect_error = '';
diff --git a/phpBB/includes/db/mysqli.php b/phpBB/includes/db/driver/mysqli.php
index 5713b1992c..be28a95715 100644
--- a/phpBB/includes/db/mysqli.php
+++ b/phpBB/includes/db/driver/mysqli.php
@@ -15,15 +15,13 @@ if (!defined('IN_PHPBB'))
 	exit;
 }
 
-include_once($phpbb_root_path . 'includes/db/dbal.' . $phpEx);
-
 /**
 * MySQLi Database Abstraction Layer
 * mysqli-extension has to be compiled with:
 * MySQL 4.1+ or MySQL 5.0+
 * @package dbal
 */
-class dbal_mysqli extends dbal
+class phpbb_db_driver_mysqli extends phpbb_db_driver
 {
 	var $multi_insert = true;
 	var $connect_error = '';
diff --git a/phpBB/includes/db/oracle.php b/phpBB/includes/db/driver/oracle.php
index 4a2b107865..6263ea8414 100644
--- a/phpBB/includes/db/oracle.php
+++ b/phpBB/includes/db/driver/oracle.php
@@ -15,13 +15,11 @@ if (!defined('IN_PHPBB'))
 	exit;
 }
 
-include_once($phpbb_root_path . 'includes/db/dbal.' . $phpEx);
-
 /**
 * Oracle Database Abstraction Layer
 * @package dbal
 */
-class dbal_oracle extends dbal
+class phpbb_db_driver_oracle extends phpbb_db_driver
 {
 	var $last_query_text = '';
 	var $connect_error = '';
diff --git a/phpBB/includes/db/postgres.php b/phpBB/includes/db/driver/postgres.php
index 8dfbfc3b60..147ecd04d9 100644
--- a/phpBB/includes/db/postgres.php
+++ b/phpBB/includes/db/driver/postgres.php
@@ -15,19 +15,12 @@ if (!defined('IN_PHPBB'))
 	exit;
 }
 
-include_once($phpbb_root_path . 'includes/db/dbal.' . $phpEx);
-
-if (!class_exists('phpbb_error_collector'))
-{
-	include($phpbb_root_path . 'includes/error_collector.' . $phpEx);
-}
-
 /**
 * PostgreSQL Database Abstraction Layer
 * Minimum Requirement is Version 7.3+
 * @package dbal
 */
-class dbal_postgres extends dbal
+class phpbb_db_driver_postgres extends phpbb_db_driver
 {
 	var $last_query_text = '';
 	var $connect_error = '';
diff --git a/phpBB/includes/db/sqlite.php b/phpBB/includes/db/driver/sqlite.php
index 06e368d586..6b9cc64d89 100644
--- a/phpBB/includes/db/sqlite.php
+++ b/phpBB/includes/db/driver/sqlite.php
@@ -15,14 +15,12 @@ if (!defined('IN_PHPBB'))
 	exit;
 }
 
-include_once($phpbb_root_path . 'includes/db/dbal.' . $phpEx);
-
 /**
 * Sqlite Database Abstraction Layer
 * Minimum Requirement: 2.8.2+
 * @package dbal
 */
-class dbal_sqlite extends dbal
+class phpbb_db_driver_sqlite extends phpbb_db_driver
 {
 	var $connect_error = '';
 
diff --git a/phpBB/includes/di/extension/config.php b/phpBB/includes/di/extension/config.php
index fb5ca90070..97a6290066 100644
--- a/phpBB/includes/di/extension/config.php
+++ b/phpBB/includes/di/extension/config.php
@@ -43,8 +43,8 @@ class phpbb_di_extension_config extends Extension
 		require($this->config_file);
 
 		$container->setParameter('core.table_prefix', $table_prefix);
-		$container->setParameter('cache.driver.class', $this->fix_acm_type($acm_type));
-		$container->setParameter('dbal.driver.class', 'dbal_'.$dbms);
+		$container->setParameter('cache.driver.class', $this->convert_30_acm_type($acm_type));
+		$container->setParameter('dbal.driver.class', phpbb_convert_30_dbms_to_31($dbms));
 		$container->setParameter('dbal.dbhost', $dbhost);
 		$container->setParameter('dbal.dbuser', $dbuser);
 		$container->setParameter('dbal.dbpasswd', $dbpasswd);
@@ -66,12 +66,12 @@ class phpbb_di_extension_config extends Extension
 	}
 
 	/**
-	* Convert old (3.0) values to 3.1 class names
+	* Convert 3.0 ACM type to 3.1 cache driver class name
 	*
-	* @param style $acm_type ACM type
-	* @return ACM type class
+	* @param string $acm_type ACM type
+	* @return cache driver class
 	*/
-	protected function fix_acm_type($acm_type)
+	protected function convert_30_acm_type($acm_type)
 	{
 		if (preg_match('#^[a-z]+$#', $acm_type))
 		{
diff --git a/phpBB/includes/extension/manager.php b/phpBB/includes/extension/manager.php
index bfd4edde93..67cc81e407 100644
--- a/phpBB/includes/extension/manager.php
+++ b/phpBB/includes/extension/manager.php
@@ -34,7 +34,7 @@ class phpbb_extension_manager
 	/**
 	* Creates a manager and loads information from database
 	*
-	* @param dbal $db A database connection
+	* @param phpbb_db_driver $db A database connection
 	* @param phpbb_config $config phpbb_config
 	* @param string $extension_table The name of the table holding extensions
 	* @param string $phpbb_root_path Path to the phpbb includes directory.
@@ -42,7 +42,7 @@ class phpbb_extension_manager
 	* @param phpbb_cache_driver_interface $cache A cache instance or null
 	* @param string $cache_name The name of the cache variable, defaults to _ext
 	*/
-	public function __construct(dbal $db, phpbb_config $config, $extension_table, $phpbb_root_path, $php_ext = '.php', phpbb_cache_driver_interface $cache = null, $cache_name = '_ext')
+	public function __construct(phpbb_db_driver $db, phpbb_config $config, $extension_table, $phpbb_root_path, $php_ext = '.php', phpbb_cache_driver_interface $cache = null, $cache_name = '_ext')
 	{
 		$this->phpbb_root_path = $phpbb_root_path;
 		$this->db = $db;
diff --git a/phpBB/includes/extension/metadata_manager.php b/phpBB/includes/extension/metadata_manager.php
index ea85bd3c4e..36b0f8b184 100644
--- a/phpBB/includes/extension/metadata_manager.php
+++ b/phpBB/includes/extension/metadata_manager.php
@@ -34,12 +34,12 @@ class phpbb_extension_metadata_manager
 	/**
 	* Creates the metadata manager
 	*
-	* @param dbal $db A database connection
+	* @param phpbb_db_driver $db A database connection
 	* @param string $extension_manager An instance of the phpbb extension manager
 	* @param string $phpbb_root_path Path to the phpbb includes directory.
 	* @param string $phpEx php file extension
 	*/
-	public function __construct($ext_name, dbal $db, phpbb_extension_manager $extension_manager, $phpbb_root_path, $phpEx = '.php', phpbb_template $template, phpbb_config $config)
+	public function __construct($ext_name, phpbb_db_driver $db, phpbb_extension_manager $extension_manager, $phpbb_root_path, $phpEx = '.php', phpbb_template $template, phpbb_config $config)
 	{
 		$this->phpbb_root_path = $phpbb_root_path;
 		$this->db = $db;
diff --git a/phpBB/includes/functions.php b/phpBB/includes/functions.php
index 9b284c5ca9..ebfcf20523 100644
--- a/phpBB/includes/functions.php
+++ b/phpBB/includes/functions.php
@@ -5628,6 +5628,52 @@ function phpbb_to_numeric($input)
 }
 
 /**
+* Convert either 3.0 dbms or 3.1 db driver class name to 3.1 db driver class name.
+*
+* If $dbms is a valid 3.1 db driver class name, returns it unchanged.
+* Otherwise prepends phpbb_db_driver_ to the dbms to convert a 3.0 dbms
+* to 3.1 db driver class name.
+*
+* @param string $dbms dbms parameter
+* @return db driver class
+*/
+function phpbb_convert_30_dbms_to_31($dbms)
+{
+	// Note: this check is done first because mysqli extension
+	// supplies a mysqli class, and class_exists($dbms) would return
+	// true for mysqli class.
+	// However, per the docblock any valid 3.1 driver name should be
+	// recognized by this function, and have priority over 3.0 dbms.
+	if (class_exists('phpbb_db_driver_' . $dbms))
+	{
+		return 'phpbb_db_driver_' . $dbms;
+	}
+
+	if (class_exists($dbms))
+	{
+		// Additionally we could check that $dbms extends phpbb_db_driver.
+		// http://php.net/manual/en/class.reflectionclass.php
+		// Beware of possible performance issues:
+		// http://stackoverflow.com/questions/294582/php-5-reflection-api-performance
+		// We could check for interface implementation in all paths or
+		// only when we do not prepend phpbb_db_driver_.
+
+		/*
+		$reflection = new \ReflectionClass($dbms);
+   	 
+		if ($reflection->isSubclassOf('phpbb_db_driver'))
+		{
+			return $dbms;
+		}
+		*/
+
+		return $dbms;
+	}
+
+	throw new \RuntimeException("You have specified an invalid dbms driver: $dbms");
+}
+
+/**
 * Create a Symfony Request object from phpbb_request object
 *
 * @param phpbb_request $request Request object
diff --git a/phpBB/includes/functions_download.php b/phpBB/includes/functions_download.php
index fc6f1cc762..9ae647d806 100644
--- a/phpBB/includes/functions_download.php
+++ b/phpBB/includes/functions_download.php
@@ -596,7 +596,7 @@ function phpbb_parse_range_request($request_array, $filesize)
 /**
 * Increments the download count of all provided attachments
 *
-* @param dbal $db The database object
+* @param phpbb_db_driver $db The database object
 * @param array|int $ids The attach_id of each attachment
 *
 * @return null
@@ -617,7 +617,7 @@ function phpbb_increment_downloads($db, $ids)
 /**
 * Handles authentication when downloading attachments from a post or topic
 *
-* @param dbal $db The database object
+* @param phpbb_db_driver $db The database object
 * @param phpbb_auth $auth The authentication object
 * @param int $topic_id The id of the topic that we are downloading from
 *
@@ -651,7 +651,7 @@ function phpbb_download_handle_forum_auth($db, $auth, $topic_id)
 /**
 * Handles authentication when downloading attachments from PMs
 *
-* @param dbal $db The database object
+* @param phpbb_db_driver $db The database object
 * @param phpbb_auth $auth The authentication object
 * @param int $user_id The user id
 * @param int $msg_id The id of the PM that we are downloading from
@@ -678,7 +678,7 @@ function phpbb_download_handle_pm_auth($db, $auth, $user_id, $msg_id)
 /**
 * Checks whether a user can download from a particular PM
 *
-* @param dbal $db The database object
+* @param phpbb_db_driver $db The database object
 * @param int $user_id The user id
 * @param int $msg_id The id of the PM that we are downloading from
 *
diff --git a/phpBB/includes/functions_install.php b/phpBB/includes/functions_install.php
index ab6b3ea009..2b4b7eb10d 100644
--- a/phpBB/includes/functions_install.php
+++ b/phpBB/includes/functions_install.php
@@ -28,7 +28,7 @@ function get_available_dbms($dbms = false, $return_unavailable = false, $only_20
 			'SCHEMA'		=> 'firebird',
 			'MODULE'		=> 'interbase',
 			'DELIM'			=> ';;',
-			'DRIVER'		=> 'firebird',
+			'DRIVER'		=> 'phpbb_db_driver_firebird',
 			'AVAILABLE'		=> true,
 			'2.0.x'			=> false,
 		),
@@ -37,7 +37,7 @@ function get_available_dbms($dbms = false, $return_unavailable = false, $only_20
 			'SCHEMA'		=> 'mysql_41',
 			'MODULE'		=> 'mysqli',
 			'DELIM'			=> ';',
-			'DRIVER'		=> 'mysqli',
+			'DRIVER'		=> 'phpbb_db_driver_mysqli',
 			'AVAILABLE'		=> true,
 			'2.0.x'			=> true,
 		),
@@ -46,7 +46,7 @@ function get_available_dbms($dbms = false, $return_unavailable = false, $only_20
 			'SCHEMA'		=> 'mysql',
 			'MODULE'		=> 'mysql',
 			'DELIM'			=> ';',
-			'DRIVER'		=> 'mysql',
+			'DRIVER'		=> 'phpbb_db_driver_mysql',
 			'AVAILABLE'		=> true,
 			'2.0.x'			=> true,
 		),
@@ -55,7 +55,7 @@ function get_available_dbms($dbms = false, $return_unavailable = false, $only_20
 			'SCHEMA'		=> 'mssql',
 			'MODULE'		=> 'mssql',
 			'DELIM'			=> 'GO',
-			'DRIVER'		=> 'mssql',
+			'DRIVER'		=> 'phpbb_db_driver_mssql',
 			'AVAILABLE'		=> true,
 			'2.0.x'			=> true,
 		),
@@ -64,7 +64,7 @@ function get_available_dbms($dbms = false, $return_unavailable = false, $only_20
 			'SCHEMA'		=> 'mssql',
 			'MODULE'		=> 'odbc',
 			'DELIM'			=> 'GO',
-			'DRIVER'		=> 'mssql_odbc',
+			'DRIVER'		=> 'phpbb_db_driver_mssql_odbc',
 			'AVAILABLE'		=> true,
 			'2.0.x'			=> true,
 		),
@@ -73,7 +73,7 @@ function get_available_dbms($dbms = false, $return_unavailable = false, $only_20
 			'SCHEMA'		=> 'mssql',
 			'MODULE'		=> 'sqlsrv',
 			'DELIM'			=> 'GO',
-			'DRIVER'		=> 'mssqlnative',
+			'DRIVER'		=> 'phpbb_db_driver_mssqlnative',
 			'AVAILABLE'		=> true,
 			'2.0.x'			=> false,
 		),
@@ -82,7 +82,7 @@ function get_available_dbms($dbms = false, $return_unavailable = false, $only_20
 			'SCHEMA'		=> 'oracle',
 			'MODULE'		=> 'oci8',
 			'DELIM'			=> '/',
-			'DRIVER'		=> 'oracle',
+			'DRIVER'		=> 'phpbb_db_driver_oracle',
 			'AVAILABLE'		=> true,
 			'2.0.x'			=> false,
 		),
@@ -91,7 +91,7 @@ function get_available_dbms($dbms = false, $return_unavailable = false, $only_20
 			'SCHEMA'		=> 'postgres',
 			'MODULE'		=> 'pgsql',
 			'DELIM'			=> ';',
-			'DRIVER'		=> 'postgres',
+			'DRIVER'		=> 'phpbb_db_driver_postgres',
 			'AVAILABLE'		=> true,
 			'2.0.x'			=> true,
 		),
@@ -100,7 +100,7 @@ function get_available_dbms($dbms = false, $return_unavailable = false, $only_20
 			'SCHEMA'		=> 'sqlite',
 			'MODULE'		=> 'sqlite',
 			'DELIM'			=> ';',
-			'DRIVER'		=> 'sqlite',
+			'DRIVER'		=> 'phpbb_db_driver_sqlite',
 			'AVAILABLE'		=> true,
 			'2.0.x'			=> false,
 		),
@@ -205,26 +205,19 @@ function connect_check_db($error_connect, &$error, $dbms_details, $table_prefix,
 
 	$dbms = $dbms_details['DRIVER'];
 
-	if ($load_dbal)
-	{
-		// Include the DB layer
-		include($phpbb_root_path . 'includes/db/' . $dbms . '.' . $phpEx);
-	}
-
 	// Instantiate it and set return on error true
-	$sql_db = 'dbal_' . $dbms;
-	$db = new $sql_db();
+	$db = new $dbms();
 	$db->sql_return_on_error(true);
 
 	// Check that we actually have a database name before going any further.....
-	if ($dbms_details['DRIVER'] != 'sqlite' && $dbms_details['DRIVER'] != 'oracle' && $dbname === '')
+	if ($dbms_details['DRIVER'] != 'phpbb_db_driver_sqlite' && $dbms_details['DRIVER'] != 'phpbb_db_driver_oracle' && $dbname === '')
 	{
 		$error[] = $lang['INST_ERR_DB_NO_NAME'];
 		return false;
 	}
 
 	// Make sure we don't have a daft user who thinks having the SQLite database in the forum directory is a good idea
-	if ($dbms_details['DRIVER'] == 'sqlite' && stripos(phpbb_realpath($dbhost), phpbb_realpath('../')) === 0)
+	if ($dbms_details['DRIVER'] == 'phpbb_db_driver_sqlite' && stripos(phpbb_realpath($dbhost), phpbb_realpath('../')) === 0)
 	{
 		$error[] = $lang['INST_ERR_DB_FORUM_PATH'];
 		return false;
@@ -233,8 +226,8 @@ function connect_check_db($error_connect, &$error, $dbms_details, $table_prefix,
 	// Check the prefix length to ensure that index names are not too long and does not contain invalid characters
 	switch ($dbms_details['DRIVER'])
 	{
-		case 'mysql':
-		case 'mysqli':
+		case 'phpbb_db_driver_mysql':
+		case 'phpbb_db_driver_mysqli':
 			if (strspn($table_prefix, '-./\\') !== 0)
 			{
 				$error[] = $lang['INST_ERR_PREFIX_INVALID'];
@@ -243,22 +236,22 @@ function connect_check_db($error_connect, &$error, $dbms_details, $table_prefix,
 
 		// no break;
 
-		case 'postgres':
+		case 'phpbb_db_driver_postgres':
 			$prefix_length = 36;
 		break;
 
-		case 'mssql':
-		case 'mssql_odbc':
-		case 'mssqlnative':
+		case 'phpbb_db_driver_mssql':
+		case 'phpbb_db_driver_mssql_odbc':
+		case 'phpbb_db_driver_mssqlnative':
 			$prefix_length = 90;
 		break;
 
-		case 'sqlite':
+		case 'phpbb_db_driver_sqlite':
 			$prefix_length = 200;
 		break;
 
-		case 'firebird':
-		case 'oracle':
+		case 'phpbb_db_driver_firebird':
+		case 'phpbb_db_driver_oracle':
 			$prefix_length = 6;
 		break;
 	}
@@ -296,21 +289,21 @@ function connect_check_db($error_connect, &$error, $dbms_details, $table_prefix,
 		// Make sure that the user has selected a sensible DBAL for the DBMS actually installed
 		switch ($dbms_details['DRIVER'])
 		{
-			case 'mysqli':
+			case 'phpbb_db_driver_mysqli':
 				if (version_compare(mysqli_get_server_info($db->db_connect_id), '4.1.3', '<'))
 				{
 					$error[] = $lang['INST_ERR_DB_NO_MYSQLI'];
 				}
 			break;
 
-			case 'sqlite':
+			case 'phpbb_db_driver_sqlite':
 				if (version_compare(sqlite_libversion(), '2.8.2', '<'))
 				{
 					$error[] = $lang['INST_ERR_DB_NO_SQLITE'];
 				}
 			break;
 
-			case 'firebird':
+			case 'phpbb_db_driver_firebird':
 				// check the version of FB, use some hackery if we can't get access to the server info
 				if ($db->service_handle !== false && function_exists('ibase_server_info'))
 				{
@@ -391,7 +384,7 @@ function connect_check_db($error_connect, &$error, $dbms_details, $table_prefix,
 				}
 			break;
 
-			case 'oracle':
+			case 'phpbb_db_driver_oracle':
 				if ($unicode_check)
 				{
 					$sql = "SELECT *
@@ -413,7 +406,7 @@ function connect_check_db($error_connect, &$error, $dbms_details, $table_prefix,
 				}
 			break;
 
-			case 'postgres':
+			case 'phpbb_db_driver_postgres':
 				if ($unicode_check)
 				{
 					$sql = "SHOW server_encoding;";
diff --git a/phpBB/includes/functions_messenger.php b/phpBB/includes/functions_messenger.php
index a33d7f0aa3..d0a02567ad 100644
--- a/phpBB/includes/functions_messenger.php
+++ b/phpBB/includes/functions_messenger.php
@@ -210,7 +210,7 @@ class messenger
 		{
 			$style_resource_locator = new phpbb_style_resource_locator();
 			$style_path_provider = new phpbb_style_extension_path_provider($phpbb_extension_manager, new phpbb_style_path_provider());
-			$tpl = new phpbb_template($phpbb_root_path, $phpEx, $config, $user, $style_resource_locator, new phpbb_template_context(), $extension_manager);
+			$tpl = new phpbb_template($phpbb_root_path, $phpEx, $config, $user, $style_resource_locator, new phpbb_template_context(), $phpbb_extension_manager);
 			$style = new phpbb_style($phpbb_root_path, $phpEx, $config, $user, $style_resource_locator, $style_path_provider, $tpl);
 
 			$this->tpl_msg[$template_lang . $template_file] = $tpl;
diff --git a/phpBB/includes/lock/db.php b/phpBB/includes/lock/db.php
index 6e94dd5a85..ccdaed0b28 100644
--- a/phpBB/includes/lock/db.php
+++ b/phpBB/includes/lock/db.php
@@ -48,7 +48,7 @@ class phpbb_lock_db
 
 	/**
 	* A database connection
-	* @var dbal
+	* @var phpbb_db_driver
 	*/
 	private $db;
 
@@ -59,9 +59,9 @@ class phpbb_lock_db
 	*
 	* @param	string	$config_name	A config variable to be used for locking
 	* @param	array	$config			The phpBB configuration
-	* @param	dbal	$db				A database connection
+	* @param	phpbb_db_driver	$db				A database connection
 	*/
-	public function __construct($config_name, phpbb_config $config, dbal $db)
+	public function __construct($config_name, phpbb_config $config, phpbb_db_driver $db)
 	{
 		$this->config_name = $config_name;
 		$this->config = $config;
diff --git a/phpBB/includes/questionnaire/questionnaire.php b/phpBB/includes/questionnaire/questionnaire.php
index 2d29fe978e..6f2727a38c 100644
--- a/phpBB/includes/questionnaire/questionnaire.php
+++ b/phpBB/includes/questionnaire/questionnaire.php
@@ -260,6 +260,8 @@ class phpbb_questionnaire_phpbb_data_provider
 		include("{$phpbb_root_path}config.$phpEx");
 		unset($dbhost, $dbport, $dbname, $dbuser, $dbpasswd); // Just a precaution
 
+		$dbms = phpbb_convert_30_dbms_to_31($dbms);
+
 		// Only send certain config vars
 		$config_vars = array(
 			'active_sessions' => true,
diff --git a/phpBB/includes/search/fulltext_mysql.php b/phpBB/includes/search/fulltext_mysql.php
index ff2e24aa05..324c214e91 100644
--- a/phpBB/includes/search/fulltext_mysql.php
+++ b/phpBB/includes/search/fulltext_mysql.php
@@ -41,8 +41,8 @@ class phpbb_search_fulltext_mysql extends phpbb_search_base
 	protected $config;
 	
 	/**
-	 * DBAL object
-	 * @var dbal
+	 * Database connection
+	 * @var phpbb_db_driver
 	 */
 	protected $db;
 	
diff --git a/phpBB/includes/search/fulltext_native.php b/phpBB/includes/search/fulltext_native.php
index 4623326fc7..53df8348ae 100644
--- a/phpBB/includes/search/fulltext_native.php
+++ b/phpBB/includes/search/fulltext_native.php
@@ -85,8 +85,8 @@ class phpbb_search_fulltext_native extends phpbb_search_base
 	protected $config;
 
 	/**
-	 * DBAL object
-	 * @var dbal
+	 * Database connection
+	 * @var phpbb_db_driver
 	 */
 	protected $db;
 
diff --git a/phpBB/includes/search/fulltext_postgres.php b/phpBB/includes/search/fulltext_postgres.php
index 2880610655..f22ee2ca16 100644
--- a/phpBB/includes/search/fulltext_postgres.php
+++ b/phpBB/includes/search/fulltext_postgres.php
@@ -66,8 +66,8 @@ class phpbb_search_fulltext_postgres extends phpbb_search_base
 	protected $config;
 
 	/**
-	 * DBAL object
-	 * @var dbal
+	 * Database connection
+	 * @var phpbb_db_driver
 	 */
 	protected $db;
 
diff --git a/phpBB/includes/search/fulltext_sphinx.php b/phpBB/includes/search/fulltext_sphinx.php
index dd5634b623..a84a64825c 100644
--- a/phpBB/includes/search/fulltext_sphinx.php
+++ b/phpBB/includes/search/fulltext_sphinx.php
@@ -84,8 +84,8 @@ class phpbb_search_fulltext_sphinx
 	protected $config;
 
 	/**
-	 * DBAL object
-	 * @var dbal
+	 * Database connection
+	 * @var phpbb_db_driver
 	 */
 	protected $db;
 
diff --git a/phpBB/install/convertors/convert_phpbb20.php b/phpBB/install/convertors/convert_phpbb20.php
index 68acea02b3..5f30625980 100644
--- a/phpBB/install/convertors/convert_phpbb20.php
+++ b/phpBB/install/convertors/convert_phpbb20.php
@@ -24,6 +24,8 @@ if (!defined('IN_PHPBB'))
 include($phpbb_root_path . 'config.' . $phpEx);
 unset($dbpasswd);
 
+$dbms = phpbb_convert_30_dbms_to_31($dbms);
+
 /**
 * $convertor_data provides some basic information about this convertor which is
 * used on the initial list of convertors and to populate the default settings
diff --git a/phpBB/install/database_update.php b/phpBB/install/database_update.php
index a4739b7212..19d704511a 100644
--- a/phpBB/install/database_update.php
+++ b/phpBB/install/database_update.php
@@ -83,7 +83,6 @@ phpbb_require_updated('includes/functions_content.' . $phpEx, true);
 
 require($phpbb_root_path . 'includes/functions_admin.' . $phpEx);
 require($phpbb_root_path . 'includes/constants.' . $phpEx);
-require($phpbb_root_path . 'includes/db/' . $dbms . '.' . $phpEx);
 require($phpbb_root_path . 'includes/utf/utf_tools.' . $phpEx);
 
 phpbb_require_updated('includes/db/db_tools.' . $phpEx);
@@ -818,6 +817,70 @@ function _add_modules($modules_to_install)
 	$_module->remove_cache_file();
 }
 
+/**
+* Add a new permission, optionally copy permission setting from another
+*
+* @param auth_admin $auth_admin auth_admin object
+* @param phpbb_db_driver $db Database object
+* @param string $permission_name Name of the permission to add
+* @param bool $is_global True is global, false is local
+* @param string $copy_from Optional permission name from which to copy
+* @return bool true on success, false on failure
+*/
+function _add_permission(auth_admin $auth_admin, phpbb_db_driver $db, $permission_name, $is_global = true, $copy_from = '')
+{
+	// Only add a permission that don't already exist
+	if (!empty($auth_admin->acl_options['id'][$permission_name]))
+	{
+		return true;
+	}
+
+	$permission_scope = $is_global ? 'global' : 'local';
+
+	$result = $auth_admin->acl_add_option(array(
+		$permission_scope => array($permission_name),
+	));
+
+	if (!$result)
+	{
+		return $result;
+	}
+
+	// The permission has been added, now we can copy it if needed
+	if ($copy_from && isset($auth_admin->acl_options['id'][$copy_from]))
+	{
+		$old_id = $auth_admin->acl_options['id'][$copy_from];
+		$new_id = $auth_admin->acl_options['id'][$permission_name];
+
+		$tables = array(ACL_GROUPS_TABLE, ACL_ROLES_DATA_TABLE, ACL_USERS_TABLE);
+
+		foreach ($tables as $table)
+		{
+			$sql = 'SELECT *
+				FROM ' . $table . '
+				WHERE auth_option_id = ' . $old_id;
+			$result = _sql($sql, $errored, $error_ary);
+
+			$sql_ary = array();
+			while ($row = $db->sql_fetchrow($result))
+			{
+				$row['auth_option_id'] = $new_id;
+				$sql_ary[] = $row;
+			}
+			$db->sql_freeresult($result);
+
+			if (sizeof($sql_ary))
+			{
+				$db->sql_multi_insert($table, $sql_ary);
+			}
+		}
+
+		$auth_admin->acl_clear_prefetch();
+	}
+
+	return true;
+}
+
 /****************************************************************************
 * ADD YOUR DATABASE SCHEMA CHANGES HERE										*
 *****************************************************************************/
@@ -2492,6 +2555,12 @@ function change_database_data(&$no_updates, $version)
 				unset($next_legend);
 			}
 
+			// Rename styles module to Customise
+			$sql = 'UPDATE ' . MODULES_TABLE . "
+				SET module_langname = 'ACP_CAT_CUSTOMISE'
+				WHERE module_langname = 'ACP_CAT_STYLES'";
+			_sql($sql, $errored, $error_ary);
+
 			// Install modules
 			$modules_to_install = array(
 				'position'	=> array(
@@ -2542,11 +2611,67 @@ function change_database_data(&$no_updates, $version)
 					'title'		=> 'UCP_NOTIFICATION_LIST',
 					'auth'		=> '',
 					'cat'		=> 'UCP_MAIN',
+				// To add a category, the mode and basename must be empty
+				// The mode is taken from the array key
+				'' => array(
+					'base'		=> '',
+					'class'		=> 'acp',
+					'title'		=> 'ACP_EXTENSION_MANAGEMENT',
+					'auth'		=> 'acl_a_extensions',
+					'cat'		=> 'ACP_CAT_CUSTOMISE',
+				),
+				'extensions'    => array(
+					'base'		=> 'acp_extensions',
+					'class'		=> 'acp',
+					'title'		=> 'ACP_EXTENSIONS',
+					'auth'		=> 'acl_a_extensions',
+					'cat'		=> 'ACP_EXTENSION_MANAGEMENT',
 				),
 			);
 
 			_add_modules($modules_to_install);
 
+			// We need a separate array for the new language sub heading
+			// because it requires another empty key
+			$modules_to_install = array(
+				'' => array(
+					'base'	=> '',
+					'class'	=> 'acp',
+					'title'	=> 'ACP_LANGUAGE',
+					'auth'	=> 'acl_a_language',
+					'cat'	=> 'ACP_CAT_CUSTOMISE',
+				),
+			);
+
+			_add_modules($modules_to_install);
+
+			// Move language management to new location in the Customise tab
+			// First get language module id
+			$sql = 'SELECT module_id FROM ' . MODULES_TABLE . "
+				WHERE module_basename = 'acp_language'";
+			$result = $db->sql_query($sql);
+			$language_module_id = $db->sql_fetchfield('module_id');
+			$db->sql_freeresult($result);
+			// Next get language management module id of the one just created
+			$sql = 'SELECT module_id FROM ' . MODULES_TABLE . "
+				WHERE module_langname = 'ACP_LANGUAGE'";
+			$result = $db->sql_query($sql);
+			$language_management_module_id = $db->sql_fetchfield('module_id');
+			$db->sql_freeresult($result);
+
+			if (!class_exists('acp_modules'))
+			{
+				include($phpbb_root_path . 'includes/acp/acp_modules.' . $phpEx);
+			}
+			// acp_modules calls adm_back_link, which is undefined at this point
+			if (!function_exists('adm_back_link'))
+			{
+				include($phpbb_root_path . 'includes/functions_acp.' . $phpEx);
+			}
+			$module_manager = new acp_modules();
+			$module_manager->module_class = 'acp';
+			$module_manager->move_module($language_module_id, $language_management_module_id);
+
 			$sql = 'DELETE FROM ' . MODULES_TABLE . "
 				WHERE (module_basename = 'styles' OR module_basename = 'acp_styles') AND (module_mode = 'imageset' OR module_mode = 'theme' OR module_mode = 'template')";
 			_sql($sql, $errored, $error_ary);
@@ -2903,45 +3028,12 @@ function change_database_data(&$no_updates, $version)
 			}
 			$db->sql_freeresult($result);
 
-			// Add new permission u_chgprofileinfo and duplicate settings from u_sig
+			// Add new permissions
 			include_once($phpbb_root_path . 'includes/acp/auth.' . $phpEx);
 			$auth_admin = new auth_admin();
 
-			// Only add the new permission if it does not already exist
-			if (empty($auth_admin->acl_options['id']['u_chgprofileinfo']))
-			{
-				$auth_admin->acl_add_option(array('global' => array('u_chgprofileinfo')));
-
-				// Now the tricky part, filling the permission
-				$old_id = $auth_admin->acl_options['id']['u_sig'];
-				$new_id = $auth_admin->acl_options['id']['u_chgprofileinfo'];
-
-				$tables = array(ACL_GROUPS_TABLE, ACL_ROLES_DATA_TABLE, ACL_USERS_TABLE);
-
-				foreach ($tables as $table)
-				{
-					$sql = 'SELECT *
-						FROM ' . $table . '
-						WHERE auth_option_id = ' . $old_id;
-					$result = _sql($sql, $errored, $error_ary);
-
-					$sql_ary = array();
-					while ($row = $db->sql_fetchrow($result))
-					{
-						$row['auth_option_id'] = $new_id;
-						$sql_ary[] = $row;
-					}
-					$db->sql_freeresult($result);
-
-					if (sizeof($sql_ary))
-					{
-						$db->sql_multi_insert($table, $sql_ary);
-					}
-				}
-
-				// Remove any old permission entries
-				$auth_admin->acl_clear_prefetch();
-			}
+			_add_permission($auth_admin, $db, 'u_chgprofileinfo', true, 'u_sig');
+			_add_permission($auth_admin, $db, 'a_extensions', true, 'a_styles');
 
 			// Update the auth setting for the module
 			$sql = 'UPDATE ' . MODULES_TABLE . "
diff --git a/phpBB/install/install_convert.php b/phpBB/install/install_convert.php
index 41de9de44c..9afe341ffa 100644
--- a/phpBB/install/install_convert.php
+++ b/phpBB/install/install_convert.php
@@ -121,10 +121,11 @@ class install_convert extends module
 
 				require($phpbb_root_path . 'config.' . $phpEx);
 				require($phpbb_root_path . 'includes/constants.' . $phpEx);
-				require($phpbb_root_path . 'includes/db/' . $dbms . '.' . $phpEx);
 				require($phpbb_root_path . 'includes/functions_convert.' . $phpEx);
 
-				$db = new $sql_db();
+				$dbms = phpbb_convert_30_dbms_to_31($dbms);
+
+				$db = new $dbms();
 				$db->sql_connect($dbhost, $dbuser, $dbpasswd, $dbname, $dbport, false, true);
 				unset($dbpasswd);
 
@@ -209,10 +210,11 @@ class install_convert extends module
 
 				require($phpbb_root_path . 'config.' . $phpEx);
 				require($phpbb_root_path . 'includes/constants.' . $phpEx);
-				require($phpbb_root_path . 'includes/db/' . $dbms . '.' . $phpEx);
 				require($phpbb_root_path . 'includes/functions_convert.' . $phpEx);
 
-				$db = new $sql_db();
+				$dbms = phpbb_convert_30_dbms_to_31($dbms);
+
+				$db = new $dbms();
 				$db->sql_connect($dbhost, $dbuser, $dbpasswd, $dbname, $dbport, false, true);
 				unset($dbpasswd);
 
@@ -332,10 +334,11 @@ class install_convert extends module
 
 		require($phpbb_root_path . 'config.' . $phpEx);
 		require($phpbb_root_path . 'includes/constants.' . $phpEx);
-		require($phpbb_root_path . 'includes/db/' . $dbms . '.' . $phpEx);
 		require($phpbb_root_path . 'includes/functions_convert.' . $phpEx);
 
-		$db = new $sql_db();
+		$dbms = phpbb_convert_30_dbms_to_31($dbms);
+
+		$db = new $dbms();
 		$db->sql_connect($dbhost, $dbuser, $dbpasswd, $dbname, $dbport, false, true);
 		unset($dbpasswd);
 
@@ -425,8 +428,7 @@ class install_convert extends module
 
 				if ($src_dbms != $dbms || $src_dbhost != $dbhost || $src_dbport != $dbport || $src_dbname != $dbname || $src_dbuser != $dbuser)
 				{
-					$sql_db = 'dbal_' . $src_dbms;
-					$src_db = new $sql_db();
+					$src_db = new $src_dbms();
 					$src_db->sql_connect($src_dbhost, $src_dbuser, htmlspecialchars_decode($src_dbpasswd), $src_dbname, $src_dbport, false, true);
 					$same_db = false;
 				}
@@ -575,10 +577,11 @@ class install_convert extends module
 
 		require($phpbb_root_path . 'config.' . $phpEx);
 		require($phpbb_root_path . 'includes/constants.' . $phpEx);
-		require($phpbb_root_path . 'includes/db/' . $dbms . '.' . $phpEx);
 		require($phpbb_root_path . 'includes/functions_convert.' . $phpEx);
 
-		$db = new $sql_db();
+		$dbms = phpbb_convert_30_dbms_to_31($dbms);
+
+		$db = new $dbms();
 		$db->sql_connect($dbhost, $dbuser, $dbpasswd, $dbname, $dbport, false, true);
 		unset($dbpasswd);
 
@@ -639,12 +642,8 @@ class install_convert extends module
 		$src_db = $same_db = null;
 		if ($convert->src_dbms != $dbms || $convert->src_dbhost != $dbhost || $convert->src_dbport != $dbport || $convert->src_dbname != $dbname || $convert->src_dbuser != $dbuser)
 		{
-			if ($convert->src_dbms != $dbms)
-			{
-				require($phpbb_root_path . 'includes/db/' . $convert->src_dbms . '.' . $phpEx);
-			}
-			$sql_db = 'dbal_' . $convert->src_dbms;
-			$src_db = new $sql_db();
+			$dbms = $convert->src_dbms;
+			$src_db = new $dbms();
 			$src_db->sql_connect($convert->src_dbhost, $convert->src_dbuser, htmlspecialchars_decode($convert->src_dbpasswd), $convert->src_dbname, $convert->src_dbport, false, true);
 			$same_db = false;
 		}
diff --git a/phpBB/install/install_install.php b/phpBB/install/install_install.php
index 4b2fa046bc..14f6ca30fb 100644
--- a/phpBB/install/install_install.php
+++ b/phpBB/install/install_install.php
@@ -1118,11 +1118,8 @@ class install_install extends module
 
 		$dbms = $available_dbms[$data['dbms']]['DRIVER'];
 
-		// Load the appropriate database class if not already loaded
-		include($phpbb_root_path . 'includes/db/' . $dbms . '.' . $phpEx);
-
 		// Instantiate the database
-		$db = new $sql_db();
+		$db = new $dbms();
 		$db->sql_connect($data['dbhost'], $data['dbuser'], htmlspecialchars_decode($data['dbpasswd']), $data['dbname'], $data['dbport'], false, false);
 
 		// NOTE: trigger_error does not work here.
@@ -1418,11 +1415,8 @@ class install_install extends module
 
 		$dbms = $available_dbms[$data['dbms']]['DRIVER'];
 
-		// Load the appropriate database class if not already loaded
-		include($phpbb_root_path . 'includes/db/' . $dbms . '.' . $phpEx);
-
 		// Instantiate the database
-		$db = new $sql_db();
+		$db = new $dbms();
 		$db->sql_connect($data['dbhost'], $data['dbuser'], htmlspecialchars_decode($data['dbpasswd']), $data['dbname'], $data['dbport'], false, false);
 
 		// NOTE: trigger_error does not work here.
@@ -2095,9 +2089,10 @@ class install_install extends module
 				'ACP_PERMISSION_ROLES',
 				'ACP_PERMISSION_MASKS',
 			),
-			'ACP_CAT_STYLES'		=> array(
+			'ACP_CAT_CUSTOMISE'		=> array(
 				'ACP_STYLE_MANAGEMENT',
-				'ACP_STYLE_COMPONENTS',
+				'ACP_EXTENSIONS_MANAGEMENT',
+				'ACP_LANGUAGE',
 			),
 			'ACP_CAT_MAINTENANCE'	=> array(
 				'ACP_FORUM_LOGS',
diff --git a/phpBB/install/install_update.php b/phpBB/install/install_update.php
index d71752f9c6..53f9c52556 100644
--- a/phpBB/install/install_update.php
+++ b/phpBB/install/install_update.php
@@ -83,7 +83,6 @@ class install_update extends module
 
 		// Init DB
 		require($phpbb_root_path . 'config.' . $phpEx);
-		require($phpbb_root_path . 'includes/db/' . $dbms . '.' . $phpEx);
 		require($phpbb_root_path . 'includes/constants.' . $phpEx);
 
 		// Special options for conflicts/modified files
@@ -92,7 +91,9 @@ class install_update extends module
 		define('MERGE_NEW_FILE', 3);
 		define('MERGE_MOD_FILE', 4);
 
-		$db = new $sql_db();
+		$dbms = phpbb_convert_30_dbms_to_31($dbms);
+
+		$db = new $dbms();
 
 		// Connect to DB
 		$db->sql_connect($dbhost, $dbuser, $dbpasswd, $dbname, $dbport, false, false);
diff --git a/phpBB/language/en/acp/common.php b/phpBB/language/en/acp/common.php
index 0096a84878..93f163364b 100644
--- a/phpBB/language/en/acp/common.php
+++ b/phpBB/language/en/acp/common.php
@@ -59,6 +59,7 @@ $lang = array_merge($lang, array(
 
 	'ACP_CAPTCHA'				=> 'CAPTCHA',
 
+	'ACP_CAT_CUSTOMISE'			=> 'Customise',
 	'ACP_CAT_DATABASE'			=> 'Database',
 	'ACP_CAT_DOT_MODS'			=> '.MODs',
 	'ACP_CAT_FORUMS'			=> 'Forums',
@@ -80,8 +81,10 @@ $lang = array_merge($lang, array(
 	'ACP_DISALLOW_USERNAMES'	=> 'Disallow usernames',
 
 	'ACP_EMAIL_SETTINGS'		=> 'Email settings',
-	'ACP_EXTENSION_GROUPS'		=> 'Manage extension groups',
-	'ACP_EXTENSIONS'			=> 'Manage board extensions',
+	'ACP_EXTENSION_GROUPS'		=> 'Manage attachment extension groups',
+	'ACP_EXTENSION_MANAGEMENT'	=> 'Extension management',
+	'ACP_EXTENSIONS'			=> 'Extensions',
+
 
 	'ACP_FORUM_BASED_PERMISSIONS'	=> 'Forum based permissions',
 	'ACP_FORUM_LOGS'				=> 'Forum logs',
@@ -119,7 +122,7 @@ $lang = array_merge($lang, array(
 	'ACP_MANAGE_ATTACHMENTS'			=> 'Manage attachments',
 	'ACP_MANAGE_ATTACHMENTS_EXPLAIN'	=> 'Here you can list and delete files attached to posts and private messages.',
 
-	'ACP_MANAGE_EXTENSIONS'		=> 'Manage extensions',
+	'ACP_MANAGE_EXTENSIONS'		=> 'Manage attachment extensions',
 	'ACP_MANAGE_FORUMS'			=> 'Manage forums',
 	'ACP_MANAGE_RANKS'			=> 'Manage ranks',
 	'ACP_MANAGE_REASONS'		=> 'Manage report/denial reasons',
@@ -166,7 +169,6 @@ $lang = array_merge($lang, array(
 	'ACP_SERVER_SETTINGS'		=> 'Server settings',
 	'ACP_SIGNATURE_SETTINGS'	=> 'Signature settings',
 	'ACP_SMILIES'				=> 'Smilies',
-	'ACP_STYLE_COMPONENTS'		=> 'Style components',
 	'ACP_STYLE_MANAGEMENT'		=> 'Style management',
 	'ACP_STYLES'				=> 'Styles',
 	'ACP_STYLES_CACHE'			=> 'Purge Cache',
diff --git a/tests/RUNNING_TESTS.txt b/tests/RUNNING_TESTS.txt
index 75a6fc94f6..cb0ec629d3 100644
--- a/tests/RUNNING_TESTS.txt
+++ b/tests/RUNNING_TESTS.txt
@@ -30,7 +30,7 @@ example for mysqli can be found below. More information on configuration
 options can be found on the wiki (see below).
 
     <?php
-    $dbms = 'mysqli';
+    $dbms = 'phpbb_db_driver_mysqli';
     $dbhost = 'localhost';
     $dbport = '';
     $dbname = 'database';
diff --git a/tests/dbal/connect_test.php b/tests/dbal/connect_test.php
index 505ce28fa1..1e352d6b03 100644
--- a/tests/dbal/connect_test.php
+++ b/tests/dbal/connect_test.php
@@ -22,9 +22,7 @@ class phpbb_dbal_connect_test extends phpbb_database_test_case
 
 		$config = $this->get_database_config();
 
-		require_once dirname(__FILE__) . '/../../phpBB/includes/db/' . $config['dbms'] . '.php';
-		$dbal = 'dbal_' . $config['dbms'];
-		$db = new $dbal();
+		$db = new $config['dbms']();
 
 		// Failure to connect results in a trigger_error call in dbal.
 		// phpunit converts triggered errors to exceptions.
diff --git a/tests/di/create_container_test.php b/tests/di/create_container_test.php
index c2b8a0fc0b..6de8803df9 100644
--- a/tests/di/create_container_test.php
+++ b/tests/di/create_container_test.php
@@ -9,7 +9,6 @@
 
 require_once dirname(__FILE__) . '/../../phpBB/includes/functions.php';
 require_once dirname(__FILE__) . '/../../phpBB/includes/functions_container.php';
-require_once dirname(__FILE__) . '/../../phpBB/includes/db/dbal.php';
 
 class phpbb_di_container_test extends phpbb_test_case
 {
@@ -52,7 +51,7 @@ class phpbb_di_container_test extends phpbb_test_case
     }
 }
 
-class dbal_container_mock extends dbal
+class phpbb_db_driver_container_mock extends phpbb_db_driver
 {
     public function sql_connect()
     {
diff --git a/tests/functional/memberlist_test.php b/tests/functional/memberlist_test.php
new file mode 100644
index 0000000000..879bee2f0e
--- /dev/null
+++ b/tests/functional/memberlist_test.php
@@ -0,0 +1,43 @@
+<?php
+/**
+*
+* @package testing
+* @copyright (c) 2012 phpBB Group
+* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2
+*
+*/
+
+/**
+* @group functional
+*/
+class phpbb_functional_memberlist_test extends phpbb_functional_test_case
+{
+	public function test_memberlist()
+	{
+		$this->create_user('memberlist-test-user');
+		// logs in as admin
+		$this->login();
+		$crawler = $this->request('GET', 'memberlist.php?sid=' . $this->sid);
+		$this->assert_response_success();
+		$this->assertContains('memberlist-test-user', $crawler->text());
+
+		// restrict by first character
+		$crawler = $this->request('GET', 'memberlist.php?first_char=m&sid=' . $this->sid);
+		$this->assert_response_success();
+		$this->assertContains('memberlist-test-user', $crawler->text());
+
+		// make sure results for wrong character are not returned
+		$crawler = $this->request('GET', 'memberlist.php?first_char=a&sid=' . $this->sid);
+		$this->assert_response_success();
+		$this->assertNotContains('memberlist-test-user', $crawler->text());
+	}
+
+	public function test_viewprofile()
+	{
+		$this->login();
+		// XXX hardcoded user id
+		$crawler = $this->request('GET', 'memberlist.php?mode=viewprofile&u=2&sid=' . $this->sid);
+		$this->assert_response_success();
+		$this->assertContains('admin', $crawler->filter('h2')->text());
+	}
+}
diff --git a/tests/functions/convert_30_dbms_to_31_test.php b/tests/functions/convert_30_dbms_to_31_test.php
new file mode 100644
index 0000000000..d08bf87f15
--- /dev/null
+++ b/tests/functions/convert_30_dbms_to_31_test.php
@@ -0,0 +1,40 @@
+<?php
+/**
+*
+* @package testing
+* @copyright (c) 2012 phpBB Group
+* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2
+*
+*/
+
+require_once dirname(__FILE__) . '/../../phpBB/includes/functions.php';
+
+class phpbb_convert_30_dbms_to_31_test extends phpbb_test_case
+{
+	public function convert_30_dbms_to_31_data()
+	{
+		return array(
+			array('firebird'),
+			array('mssql'),
+			array('mssql_odbc'),
+			array('mssqlnative'),
+			array('mysql'),
+			array('mysqli'),
+			array('oracle'),
+			array('postgres'),
+			array('sqlite'),
+		);
+	}
+
+	/**
+	* @dataProvider convert_30_dbms_to_31_data
+	*/
+	public function test_convert_30_dbms_to_31($input)
+	{
+		$expected = "phpbb_db_driver_$input";
+
+		$output = phpbb_convert_30_dbms_to_31($input);
+
+		$this->assertEquals($expected, $output);
+	}
+}
diff --git a/tests/session/testable_factory.php b/tests/session/testable_factory.php
index cb85a01c5c..1e2b194ece 100644
--- a/tests/session/testable_factory.php
+++ b/tests/session/testable_factory.php
@@ -59,10 +59,10 @@ class phpbb_session_testable_factory
 	/**
 	* Retrieve the configured session class instance
 	*
-	* @param dbal $dbal The database connection to use for session data
+	* @param phpbb_db_driver $dbal The database connection to use for session data
 	* @return phpbb_mock_session_testable A session instance
 	*/
-	public function get_session(dbal $dbal)
+	public function get_session(phpbb_db_driver $dbal)
 	{
 		// set up all the global variables used by session
 		global $SID, $_SID, $db, $config, $cache, $request;
diff --git a/tests/test_framework/phpbb_database_test_case.php b/tests/test_framework/phpbb_database_test_case.php
index b5076b92e9..72bce2e38a 100644
--- a/tests/test_framework/phpbb_database_test_case.php
+++ b/tests/test_framework/phpbb_database_test_case.php
@@ -49,7 +49,7 @@ abstract class phpbb_database_test_case extends PHPUnit_Extensions_Database_Test
 		$db_config = $this->get_database_config();
 
 		// Firebird requires table and column names to be uppercase
-		if ($db_config['dbms'] == 'firebird')
+		if ($db_config['dbms'] == 'phpbb_db_driver_firebird')
 		{
 			$xml_data = file_get_contents($path);
 			$xml_data = preg_replace_callback('/(?:(<table name="))([a-z_]+)(?:(">))/', 'phpbb_database_test_case::to_upper', $xml_data);
@@ -118,9 +118,7 @@ abstract class phpbb_database_test_case extends PHPUnit_Extensions_Database_Test
 
 		$config = $this->get_database_config();
 
-		require_once dirname(__FILE__) . '/../../phpBB/includes/db/' . $config['dbms'] . '.php';
-		$dbal = 'dbal_' . $config['dbms'];
-		$db = new $dbal();
+		$db = new $config['dbms']();
 		$db->sql_connect($config['dbhost'], $config['dbuser'], $config['dbpasswd'], $config['dbname'], $config['dbport']);
 
 		return $db;
diff --git a/tests/test_framework/phpbb_database_test_connection_manager.php b/tests/test_framework/phpbb_database_test_connection_manager.php
index d7c2804aa7..4ce5f03a8b 100644
--- a/tests/test_framework/phpbb_database_test_connection_manager.php
+++ b/tests/test_framework/phpbb_database_test_connection_manager.php
@@ -108,7 +108,7 @@ class phpbb_database_test_connection_manager
 
 		// These require different connection strings on the phpBB side than they do in PDO
 		// so you must provide a DSN string for ODBC separately
-		if (!empty($this->config['custom_dsn']) && ($this->config['dbms'] == 'mssql' || $this->config['dbms'] == 'firebird'))
+		if (!empty($this->config['custom_dsn']) && ($this->config['dbms'] == 'phpbb_db_driver_mssql' || $this->config['dbms'] == 'phpbb_db_driver_firebird'))
 		{
 			$dsn = 'odbc:' . $this->config['custom_dsn'];
 		}
@@ -117,12 +117,12 @@ class phpbb_database_test_connection_manager
 		{
 			switch ($this->config['dbms'])
 			{
-				case 'mssql':
-				case 'mssql_odbc':
+				case 'phpbb_db_driver_mssql':
+				case 'phpbb_db_driver_mssql_odbc':
 					$this->pdo = new phpbb_database_connection_odbc_pdo_wrapper('mssql', 0, $dsn, $this->config['dbuser'], $this->config['dbpasswd']);
 				break;
 
-				case 'firebird':
+				case 'phpbb_db_driver_firebird':
 					if (!empty($this->config['custom_dsn']))
 					{
 						$this->pdo = new phpbb_database_connection_odbc_pdo_wrapper('firebird', 0, $dsn, $this->config['dbuser'], $this->config['dbpasswd']);
@@ -165,8 +165,8 @@ class phpbb_database_test_connection_manager
 	{
 		switch ($this->config['dbms'])
 		{
-			case 'sqlite':
-			case 'firebird':
+			case 'phpbb_db_driver_sqlite':
+			case 'phpbb_db_driver_firebird':
 				$this->connect();
 				// Drop all of the tables
 				foreach ($this->get_tables() as $table)
@@ -176,7 +176,7 @@ class phpbb_database_test_connection_manager
 				$this->purge_extras();
 			break;
 
-			case 'oracle':
+			case 'phpbb_db_driver_oracle':
 				$this->connect();
 				// Drop all of the tables
 				foreach ($this->get_tables() as $table)
@@ -226,39 +226,39 @@ class phpbb_database_test_connection_manager
 
 		switch ($this->config['dbms'])
 		{
-			case 'mysql':
-			case 'mysql4':
-			case 'mysqli':
+			case 'phpbb_db_driver_mysql':
+			case 'phpbb_db_driver_mysql4':
+			case 'phpbb_db_driver_mysqli':
 				$sql = 'SHOW TABLES';
 			break;
 
-			case 'sqlite':
+			case 'phpbb_db_driver_sqlite':
 				$sql = 'SELECT name
 					FROM sqlite_master
 					WHERE type = "table"';
 			break;
 
-			case 'mssql':
-			case 'mssql_odbc':
-			case 'mssqlnative':
+			case 'phpbb_db_driver_mssql':
+			case 'phpbb_db_driver_mssql_odbc':
+			case 'phpbb_db_driver_mssqlnative':
 				$sql = "SELECT name
 					FROM sysobjects
 					WHERE type='U'";
 			break;
 
-			case 'postgres':
+			case 'phpbb_db_driver_postgres':
 				$sql = 'SELECT relname
 					FROM pg_stat_user_tables';
 			break;
 
-			case 'firebird':
+			case 'phpbb_db_driver_firebird':
 				$sql = 'SELECT rdb$relation_name
 					FROM rdb$relations
 					WHERE rdb$view_source is null
 						AND rdb$system_flag = 0';
 			break;
 
-			case 'oracle':
+			case 'phpbb_db_driver_oracle':
 				$sql = 'SELECT table_name
 					FROM USER_TABLES';
 			break;
@@ -293,8 +293,8 @@ class phpbb_database_test_connection_manager
 	protected function load_schema_from_file($directory)
 	{
 		$schema = $this->dbms['SCHEMA'];
-		
-		if ($this->config['dbms'] == 'mysql')
+
+		if ($this->config['dbms'] == 'phpbb_db_driver_mysql')
 		{
 			$sth = $this->pdo->query('SELECT VERSION() AS version');
 			$row = $sth->fetch(PDO::FETCH_ASSOC);
@@ -313,7 +313,7 @@ class phpbb_database_test_connection_manager
 
 		$queries = file_get_contents($filename);
 		$sql = phpbb_remove_comments($queries);
-		
+
 		$sql = split_sql_file($sql, $this->dbms['DELIM']);
 
 		foreach ($sql as $query)
@@ -328,47 +328,47 @@ class phpbb_database_test_connection_manager
 	protected function get_dbms_data($dbms)
 	{
 		$available_dbms = array(
-			'firebird'	=> array(
+			'phpbb_db_driver_firebird'	=> array(
 				'SCHEMA'		=> 'firebird',
 				'DELIM'			=> ';;',
 				'PDO'			=> 'firebird',
 			),
-			'mysqli'	=> array(
+			'phpbb_db_driver_mysqli'	=> array(
 				'SCHEMA'		=> 'mysql_41',
 				'DELIM'			=> ';',
 				'PDO'			=> 'mysql',
 			),
-			'mysql'		=> array(
+			'phpbb_db_driver_mysql'		=> array(
 				'SCHEMA'		=> 'mysql',
 				'DELIM'			=> ';',
 				'PDO'			=> 'mysql',
 			),
-			'mssql'		=> array(
+			'phpbb_db_driver_mssql'		=> array(
 				'SCHEMA'		=> 'mssql',
 				'DELIM'			=> 'GO',
 				'PDO'			=> 'odbc',
 			),
-			'mssql_odbc'=>	array(
+			'phpbb_db_driver_mssql_odbc'=>	array(
 				'SCHEMA'		=> 'mssql',
 				'DELIM'			=> 'GO',
 				'PDO'			=> 'odbc',
 			),
-			'mssqlnative'		=> array(
+			'phpbb_db_driver_mssqlnative'		=> array(
 				'SCHEMA'		=> 'mssql',
 				'DELIM'			=> 'GO',
 				'PDO'			=> 'sqlsrv',
 			),
-			'oracle'	=>	array(
+			'phpbb_db_driver_oracle'	=>	array(
 				'SCHEMA'		=> 'oracle',
 				'DELIM'			=> '/',
 				'PDO'			=> 'oci',
 			),
-			'postgres' => array(
+			'phpbb_db_driver_postgres' => array(
 				'SCHEMA'		=> 'postgres',
 				'DELIM'			=> ';',
 				'PDO'			=> 'pgsql',
 			),
-			'sqlite'		=> array(
+			'phpbb_db_driver_sqlite'		=> array(
 				'SCHEMA'		=> 'sqlite',
 				'DELIM'			=> ';',
 				'PDO'			=> 'sqlite2',
@@ -397,7 +397,7 @@ class phpbb_database_test_connection_manager
 
 		switch ($this->config['dbms'])
 		{
-			case 'firebird':
+			case 'phpbb_db_driver_firebird':
 				$sql = 'SELECT RDB$GENERATOR_NAME
 					FROM RDB$GENERATORS
 					WHERE RDB$SYSTEM_FLAG = 0';
@@ -409,7 +409,7 @@ class phpbb_database_test_connection_manager
 				}
 			break;
 
-			case 'oracle':
+			case 'phpbb_db_driver_oracle':
 				$sql = 'SELECT sequence_name
 					FROM USER_SEQUENCES';
 				$result = $this->pdo->query($sql);
@@ -444,7 +444,7 @@ class phpbb_database_test_connection_manager
 
 		switch ($this->config['dbms'])
 		{
-			case 'oracle':
+			case 'phpbb_db_driver_oracle':
 				// Get all of the information about the sequences
 				$sql = "SELECT t.table_name, tc.column_name, d.referenced_name as sequence_name, s.increment_by, s.min_value
 					FROM USER_TRIGGERS t
@@ -486,7 +486,7 @@ class phpbb_database_test_connection_manager
 				}
 			break;
 
-			case 'postgres':
+			case 'phpbb_db_driver_postgres':
 				// Get the sequences attached to the tables
 				$sql = 'SELECT column_name, table_name FROM information_schema.columns
 					WHERE table_name IN (' . implode(', ', $table_names) . ")
diff --git a/tests/test_framework/phpbb_functional_test_case.php b/tests/test_framework/phpbb_functional_test_case.php
index 6536ad8807..67a5050892 100644
--- a/tests/test_framework/phpbb_functional_test_case.php
+++ b/tests/test_framework/phpbb_functional_test_case.php
@@ -34,13 +34,36 @@ class phpbb_functional_test_case extends phpbb_test_case
 	static protected $config = array();
 	static protected $already_installed = false;
 
-	public function setUp()
+	static public function setUpBeforeClass()
 	{
+		parent::setUpBeforeClass();
+
+		self::$config = phpbb_test_case_helpers::get_test_config();
+
+		// Important: this is used both for installation and by
+		// test cases for querying the tables.
+		// Therefore table prefix must be set before a board is
+		// installed, and also before each test case is run.
+		self::$config['table_prefix'] = 'phpbb_';
+
 		if (!isset(self::$config['phpbb_functional_url']))
 		{
-			$this->markTestSkipped('phpbb_functional_url was not set in test_config and wasn\'t set as PHPBB_FUNCTIONAL_URL environment variable either.');
+			self::markTestSkipped('phpbb_functional_url was not set in test_config and wasn\'t set as PHPBB_FUNCTIONAL_URL environment variable either.');
 		}
 
+		if (!self::$already_installed)
+		{
+			self::install_board();
+			self::$already_installed = true;
+		}
+	}
+
+	public function setUp()
+	{
+		parent::setUp();
+
+		$this->bootstrap();
+
 		$this->cookieJar = new CookieJar;
 		$this->client = new Goutte\Client(array(), null, $this->cookieJar);
 		// Reset the curl handle because it is 0 at this point and not a valid
@@ -73,27 +96,16 @@ class phpbb_functional_test_case extends phpbb_test_case
 		$this->backupStaticAttributesBlacklist += array(
 			'phpbb_functional_test_case' => array('config', 'already_installed'),
 		);
-
-		if (!static::$already_installed)
-		{
-			$this->install_board();
-			$this->bootstrap();
-			static::$already_installed = true;
-		}
 	}
 
 	protected function get_db()
 	{
 		global $phpbb_root_path, $phpEx;
 		// so we don't reopen an open connection
-		if (!($this->db instanceof dbal))
+		if (!($this->db instanceof phpbb_db_driver))
 		{
-			if (!class_exists('dbal_' . self::$config['dbms']))
-			{
-				include($phpbb_root_path . 'includes/db/' . self::$config['dbms'] . ".$phpEx");
-			}
-			$sql_db = 'dbal_' . self::$config['dbms'];
-			$this->db = new $sql_db();
+			$dbms = self::$config['dbms'];
+			$this->db = new $dbms();
 			$this->db->sql_connect(self::$config['dbhost'], self::$config['dbuser'], self::$config['dbpasswd'], self::$config['dbname'], self::$config['dbport']);
 		}
 		return $this->db;
@@ -137,19 +149,11 @@ class phpbb_functional_test_case extends phpbb_test_case
 		return $this->extension_manager;
 	}
 
-	protected function install_board()
+	static protected function install_board()
 	{
 		global $phpbb_root_path, $phpEx;
 
-		self::$config = phpbb_test_case_helpers::get_test_config();
-
-		if (!isset(self::$config['phpbb_functional_url']))
-		{
-			return;
-		}
-
-		self::$config['table_prefix'] = 'phpbb_';
-		$this->recreate_database(self::$config);
+		self::recreate_database(self::$config);
 
 		if (file_exists($phpbb_root_path . "config.$phpEx"))
 		{
@@ -194,19 +198,30 @@ class phpbb_functional_test_case extends phpbb_test_case
 		));
 		// end data
 
-		$content = $this->do_request('install');
-		$this->assertContains('Welcome to Installation', $content);
-
-		$this->do_request('create_table', $data);
-
-		$this->do_request('config_file', $data);
+		$content = self::do_request('install');
+		self::assertNotSame(false, $content);
+		self::assertContains('Welcome to Installation', $content);
+
+		// Installer uses 3.0-style dbms name
+		$data['dbms'] = str_replace('phpbb_db_driver_', '', $data['dbms']);
+		$content = self::do_request('create_table', $data);
+		self::assertNotSame(false, $content);
+		self::assertContains('The database tables used by phpBB', $content);
+		// 3.0 or 3.1
+		self::assertContains('have been created and populated with some initial data.', $content);
+
+		$content = self::do_request('config_file', $data);
+		self::assertNotSame(false, $content);
+		self::assertContains('Configuration file', $content);
 		file_put_contents($phpbb_root_path . "config.$phpEx", phpbb_create_config_file_data($data, self::$config['dbms'], true, true));
 
-		$this->do_request('final', $data);
+		$content = self::do_request('final', $data);
+		self::assertNotSame(false, $content);
+		self::assertContains('You have successfully installed', $content);
 		copy($phpbb_root_path . "config.$phpEx", $phpbb_root_path . "config_test.$phpEx");
 	}
 
-	private function do_request($sub, $post_data = null)
+	static private function do_request($sub, $post_data = null)
 	{
 		$context = null;
 
@@ -225,7 +240,7 @@ class phpbb_functional_test_case extends phpbb_test_case
 		return file_get_contents(self::$config['phpbb_functional_url'] . 'install/index.php?mode=install&sub=' . $sub, false, $context);
 	}
 
-	private function recreate_database($config)
+	static private function recreate_database($config)
 	{
 		$db_conn_mgr = new phpbb_database_test_connection_manager($config);
 		$db_conn_mgr->recreate_db();
@@ -242,16 +257,12 @@ class phpbb_functional_test_case extends phpbb_test_case
 		// Required by unique_id
 		global $config;
 
-		if (!is_array($config))
-		{
-			$config = array();
-		}
-
+		$config = new phpbb_config(array());
 		$config['rand_seed'] = '';
 		$config['rand_seed_last_update'] = time() + 600;
 
 		// Required by user_add
-		global $db, $cache, $config, $phpbb_dispatcher;
+		global $db, $cache, $phpbb_dispatcher;
 		$db = $this->get_db();
 		if (!function_exists('phpbb_mock_null_cache'))
 		{
@@ -267,7 +278,6 @@ class phpbb_functional_test_case extends phpbb_test_case
 		{
 			require_once(__DIR__ . '/../../phpBB/includes/functions_user.php');
 		}
-		$config = new phpbb_config(array());
 		set_config(null, null, null, $config);
 		set_config_count(null, null, null, $config);
 		$phpbb_dispatcher = new phpbb_mock_event_dispatcher();
diff --git a/tests/test_framework/phpbb_test_case_helpers.php b/tests/test_framework/phpbb_test_case_helpers.php
index fe15eded90..47459832d5 100644
--- a/tests/test_framework/phpbb_test_case_helpers.php
+++ b/tests/test_framework/phpbb_test_case_helpers.php
@@ -54,7 +54,7 @@ class phpbb_test_case_helpers
 		if (extension_loaded('sqlite') && version_compare(PHPUnit_Runner_Version::id(), '3.4.15', '>='))
 		{
 			$config = array_merge($config, array(
-				'dbms'		=> 'sqlite',
+				'dbms'		=> 'phpbb_db_driver_sqlite',
 				'dbhost'	=> dirname(__FILE__) . '/../phpbb_unit_tests.sqlite2', // filename
 				'dbport'	=> '',
 				'dbname'	=> '',
@@ -78,7 +78,7 @@ class phpbb_test_case_helpers
 			include($test_config);
 
 			$config = array_merge($config, array(
-				'dbms'		=> $dbms,
+				'dbms'		=> phpbb_convert_30_dbms_to_31($dbms),
 				'dbhost'	=> $dbhost,
 				'dbport'	=> $dbport,
 				'dbname'	=> $dbname,
@@ -104,8 +104,13 @@ class phpbb_test_case_helpers
 
 		if (isset($_SERVER['PHPBB_TEST_DBMS']))
 		{
+			if (!function_exists('phpbb_convert_30_dbms_to_31'))
+			{
+				require_once dirname(__FILE__) . '/../../phpBB/includes/functions.php';
+			}
+
 			$config = array_merge($config, array(
-				'dbms'		=> isset($_SERVER['PHPBB_TEST_DBMS']) ? $_SERVER['PHPBB_TEST_DBMS'] : '',
+				'dbms'		=> isset($_SERVER['PHPBB_TEST_DBMS']) ? phpbb_convert_30_dbms_to_31($_SERVER['PHPBB_TEST_DBMS']) : '',
 				'dbhost'	=> isset($_SERVER['PHPBB_TEST_DBHOST']) ? $_SERVER['PHPBB_TEST_DBHOST'] : '',
 				'dbport'	=> isset($_SERVER['PHPBB_TEST_DBPORT']) ? $_SERVER['PHPBB_TEST_DBPORT'] : '',
 				'dbname'	=> isset($_SERVER['PHPBB_TEST_DBNAME']) ? $_SERVER['PHPBB_TEST_DBNAME'] : '',
diff --git a/travis/phpunit-mysql-travis.xml b/travis/phpunit-mysql-travis.xml
index 5366494c8b..cc033ff959 100644
--- a/travis/phpunit-mysql-travis.xml
+++ b/travis/phpunit-mysql-travis.xml
@@ -28,7 +28,7 @@
 	</groups>
 
 	<php>
-		<server name="PHPBB_TEST_DBMS" value="mysqli" />
+		<server name="PHPBB_TEST_DBMS" value="phpbb_db_driver_mysqli" />
 		<server name="PHPBB_TEST_DBHOST" value="0.0.0.0" />
 		<server name="PHPBB_TEST_DBPORT" value="3306" />
 		<server name="PHPBB_TEST_DBNAME" value="phpbb_tests" />
diff --git a/travis/phpunit-postgres-travis.xml b/travis/phpunit-postgres-travis.xml
index 0383edd9d6..5019c225b4 100644
--- a/travis/phpunit-postgres-travis.xml
+++ b/travis/phpunit-postgres-travis.xml
@@ -30,7 +30,7 @@
 	<php>
 		<!-- "Real" test database -->
 		<!-- uncomment, otherwise sqlite memory runs -->
-		<server name="PHPBB_TEST_DBMS" value="postgres"/>
+		<server name="PHPBB_TEST_DBMS" value="phpbb_db_driver_postgres"/>
 		<server name="PHPBB_TEST_DBHOST" value="localhost" />
 		<server name="PHPBB_TEST_DBPORT" value="5432" />
 		<server name="PHPBB_TEST_DBNAME" value="phpbb_tests" />