10 files changed, 41 insertions, 18 deletions
diff --git a/phpBB/install/database_update.php b/phpBB/install/database_update.php
index 594397c815..6e99fd56a0 100644
--- a/phpBB/install/database_update.php
+++ b/phpBB/install/database_update.php
@@ -1109,6 +1109,9 @@ function database_update_info()
 				GROUPS_TABLE		=> array(
 					'group_legend'		=> array('UINT', 0),
 				),
+				USERS_TABLE			=> array(
+					'user_timezone'		=> array('VCHAR:100', ''),
+				),
 			),
 		),
 	);
@@ -1123,6 +1126,8 @@ function change_database_data(&$no_updates, $version)
 {
 	global $db, $errored, $error_ary, $config, $phpbb_root_path, $phpEx, $db_tools;
 
+	$update_helpers = new phpbb_update_helpers();
+
 	switch ($version)
 	{
 		case '3.0.0':
@@ -1968,7 +1973,7 @@ function change_database_data(&$no_updates, $version)
 					'user_email'			=> '',
 					'user_lang'				=> $config['default_lang'],
 					'user_style'			=> $config['default_style'],
-					'user_timezone'			=> 0,
+					'user_timezone'			=> 'UTC',
 					'user_dateformat'		=> $config['default_dateformat'],
 					'user_allow_massemail'	=> 0,
 				);
@@ -2607,6 +2612,32 @@ function change_database_data(&$no_updates, $version)
 				$config->set('assets_version', '1');
 			}
 
+			// If the column exists, we did not yet update the users timezone
+			if ($db_tools->sql_column_exists(USERS_TABLE, 'user_dst'))
+			{
+				// Update user timezones
+				$sql = 'SELECT user_dst, user_timezone
+					FROM ' . USERS_TABLE . '
+					GROUP BY user_timezone, user_dst';
+				$result = $db->sql_query($sql);
+
+				while ($row = $db->sql_fetchrow($result))
+				{
+					$sql = 'UPDATE ' . USERS_TABLE . "
+						SET user_timezone = '" . $db->sql_escape($update_helpers->convert_phpbb30_timezone($row['user_timezone'], $row['user_dst'])) . "'
+						WHERE user_timezone = '" . $db->sql_escape($row['user_timezone']) . "'
+							AND user_dst = " . (int) $row['user_dst'];
+					_sql($sql, $errored, $error_ary);
+				}
+				$db->sql_freeresult($result);
+
+				// Update board default timezone
+				set_config('board_timezone', $update_helpers->convert_phpbb30_timezone($config['board_timezone'], $config['board_dst']));
+
+				// After we have calculated the timezones we can delete user_dst column from user table.
+				$db_tools->sql_column_remove(USERS_TABLE, 'user_dst');
+			}
+
 		break;
 	}
 }
diff --git a/phpBB/install/install_install.php b/phpBB/install/install_install.php
index bbd11f9a6f..40dee7b3d7 100644
--- a/phpBB/install/install_install.php
+++ b/phpBB/install/install_install.php
@@ -1795,7 +1795,7 @@ class install_install extends module
 				'user_email'			=> '',
 				'user_lang'				=> $data['default_lang'],
 				'user_style'			=> 1,
-				'user_timezone'			=> 0,
+				'user_timezone'			=> 'UTC',
 				'user_dateformat'		=> $lang['default_dateformat'],
 				'user_allow_massemail'	=> 0,
 			);
diff --git a/phpBB/install/schemas/firebird_schema.sql b/phpBB/install/schemas/firebird_schema.sql
index 51565ef2d4..155ac2a2d4 100644
--- a/phpBB/install/schemas/firebird_schema.sql
+++ b/phpBB/install/schemas/firebird_schema.sql
@@ -1242,8 +1242,7 @@ CREATE TABLE phpbb_users (
 	user_inactive_time INTEGER DEFAULT 0 NOT NULL,
 	user_posts INTEGER DEFAULT 0 NOT NULL,
 	user_lang VARCHAR(30) CHARACTER SET NONE DEFAULT '' NOT NULL,
-	user_timezone DOUBLE PRECISION DEFAULT 0 NOT NULL,
-	user_dst INTEGER DEFAULT 0 NOT NULL,
+	user_timezone VARCHAR(100) CHARACTER SET NONE DEFAULT 'UTC' NOT NULL,
 	user_dateformat VARCHAR(30) CHARACTER SET UTF8 DEFAULT 'd M Y H:i' NOT NULL COLLATE UNICODE,
 	user_style INTEGER DEFAULT 0 NOT NULL,
 	user_rank INTEGER DEFAULT 0 NOT NULL,
diff --git a/phpBB/install/schemas/mssql_schema.sql b/phpBB/install/schemas/mssql_schema.sql
index 2c78dd009f..3051f17bfa 100644
--- a/phpBB/install/schemas/mssql_schema.sql
+++ b/phpBB/install/schemas/mssql_schema.sql
@@ -1526,8 +1526,7 @@ CREATE TABLE [phpbb_users] (
 	[user_inactive_time] [int] DEFAULT (0) NOT NULL ,
 	[user_posts] [int] DEFAULT (0) NOT NULL ,
 	[user_lang] [varchar] (30) DEFAULT ('') NOT NULL ,
-	[user_timezone] [float] DEFAULT (0) NOT NULL ,
-	[user_dst] [int] DEFAULT (0) NOT NULL ,
+	[user_timezone] [varchar] (100) DEFAULT ('UTC') NOT NULL ,
 	[user_dateformat] [varchar] (30) DEFAULT ('d M Y H:i') NOT NULL ,
 	[user_style] [int] DEFAULT (0) NOT NULL ,
 	[user_rank] [int] DEFAULT (0) NOT NULL ,
diff --git a/phpBB/install/schemas/mysql_40_schema.sql b/phpBB/install/schemas/mysql_40_schema.sql
index d19f1930d0..d3c287112d 100644
--- a/phpBB/install/schemas/mysql_40_schema.sql
+++ b/phpBB/install/schemas/mysql_40_schema.sql
@@ -890,8 +890,7 @@ CREATE TABLE phpbb_users (
 	user_inactive_time int(11) UNSIGNED DEFAULT '0' NOT NULL,
 	user_posts mediumint(8) UNSIGNED DEFAULT '0' NOT NULL,
 	user_lang varbinary(30) DEFAULT '' NOT NULL,
-	user_timezone decimal(5,2) DEFAULT '0' NOT NULL,
-	user_dst tinyint(1) UNSIGNED DEFAULT '0' NOT NULL,
+	user_timezone varbinary(100) DEFAULT 'UTC' NOT NULL,
 	user_dateformat varbinary(90) DEFAULT 'd M Y H:i' NOT NULL,
 	user_style mediumint(8) UNSIGNED DEFAULT '0' NOT NULL,
 	user_rank mediumint(8) UNSIGNED DEFAULT '0' NOT NULL,
diff --git a/phpBB/install/schemas/mysql_41_schema.sql b/phpBB/install/schemas/mysql_41_schema.sql
index 3fd8d4f1d1..d7822436b1 100644
--- a/phpBB/install/schemas/mysql_41_schema.sql
+++ b/phpBB/install/schemas/mysql_41_schema.sql
@@ -890,8 +890,7 @@ CREATE TABLE phpbb_users (
 	user_inactive_time int(11) UNSIGNED DEFAULT '0' NOT NULL,
 	user_posts mediumint(8) UNSIGNED DEFAULT '0' NOT NULL,
 	user_lang varchar(30) DEFAULT '' NOT NULL,
-	user_timezone decimal(5,2) DEFAULT '0' NOT NULL,
-	user_dst tinyint(1) UNSIGNED DEFAULT '0' NOT NULL,
+	user_timezone varchar(100) DEFAULT 'UTC' NOT NULL,
 	user_dateformat varchar(30) DEFAULT 'd M Y H:i' NOT NULL,
 	user_style mediumint(8) UNSIGNED DEFAULT '0' NOT NULL,
 	user_rank mediumint(8) UNSIGNED DEFAULT '0' NOT NULL,
diff --git a/phpBB/install/schemas/oracle_schema.sql b/phpBB/install/schemas/oracle_schema.sql
index 8a0f3e56b1..96ead064a7 100644
--- a/phpBB/install/schemas/oracle_schema.sql
+++ b/phpBB/install/schemas/oracle_schema.sql
@@ -1638,8 +1638,7 @@ CREATE TABLE phpbb_users (
 	user_inactive_time number(11) DEFAULT '0' NOT NULL,
 	user_posts number(8) DEFAULT '0' NOT NULL,
 	user_lang varchar2(30) DEFAULT '' ,
-	user_timezone number(5, 2) DEFAULT '0' NOT NULL,
-	user_dst number(1) DEFAULT '0' NOT NULL,
+	user_timezone varchar2(100) DEFAULT 'UTC' NOT NULL,
 	user_dateformat varchar2(90) DEFAULT 'd M Y H:i' NOT NULL,
 	user_style number(8) DEFAULT '0' NOT NULL,
 	user_rank number(8) DEFAULT '0' NOT NULL,
diff --git a/phpBB/install/schemas/postgres_schema.sql b/phpBB/install/schemas/postgres_schema.sql
index c624024362..bb0563954d 100644
--- a/phpBB/install/schemas/postgres_schema.sql
+++ b/phpBB/install/schemas/postgres_schema.sql
@@ -1140,8 +1140,7 @@ CREATE TABLE phpbb_users (
 	user_inactive_time INT4 DEFAULT '0' NOT NULL CHECK (user_inactive_time >= 0),
 	user_posts INT4 DEFAULT '0' NOT NULL CHECK (user_posts >= 0),
 	user_lang varchar(30) DEFAULT '' NOT NULL,
-	user_timezone decimal(5,2) DEFAULT '0' NOT NULL,
-	user_dst INT2 DEFAULT '0' NOT NULL CHECK (user_dst >= 0),
+	user_timezone varchar(100) DEFAULT 'UTC' NOT NULL,
 	user_dateformat varchar(30) DEFAULT 'd M Y H:i' NOT NULL,
 	user_style INT4 DEFAULT '0' NOT NULL CHECK (user_style >= 0),
 	user_rank INT4 DEFAULT '0' NOT NULL CHECK (user_rank >= 0),
diff --git a/phpBB/install/schemas/schema_data.sql b/phpBB/install/schemas/schema_data.sql
index deefdafbc4..0bb1858c11 100644
--- a/phpBB/install/schemas/schema_data.sql
+++ b/phpBB/install/schemas/schema_data.sql
@@ -54,12 +54,11 @@ INSERT INTO phpbb_config (config_name, config_value) VALUES ('avatar_salt', 'php
 INSERT INTO phpbb_config (config_name, config_value) VALUES ('board_contact', 'contact@yourdomain.tld');
 INSERT INTO phpbb_config (config_name, config_value) VALUES ('board_disable', '0');
 INSERT INTO phpbb_config (config_name, config_value) VALUES ('board_disable_msg', '');
-INSERT INTO phpbb_config (config_name, config_value) VALUES ('board_dst', '0');
 INSERT INTO phpbb_config (config_name, config_value) VALUES ('board_email', 'address@yourdomain.tld');
 INSERT INTO phpbb_config (config_name, config_value) VALUES ('board_email_form', '0');
 INSERT INTO phpbb_config (config_name, config_value) VALUES ('board_email_sig', '{L_CONFIG_BOARD_EMAIL_SIG}');
 INSERT INTO phpbb_config (config_name, config_value) VALUES ('board_hide_emails', '1');
-INSERT INTO phpbb_config (config_name, config_value) VALUES ('board_timezone', '0');
+INSERT INTO phpbb_config (config_name, config_value) VALUES ('board_timezone', 'UTC');
 INSERT INTO phpbb_config (config_name, config_value) VALUES ('browser_check', '1');
 INSERT INTO phpbb_config (config_name, config_value) VALUES ('bump_interval', '10');
 INSERT INTO phpbb_config (config_name, config_value) VALUES ('bump_type', 'd');
diff --git a/phpBB/install/schemas/sqlite_schema.sql b/phpBB/install/schemas/sqlite_schema.sql
index bd002c93ed..2504586e6c 100644
--- a/phpBB/install/schemas/sqlite_schema.sql
+++ b/phpBB/install/schemas/sqlite_schema.sql
@@ -864,8 +864,7 @@ CREATE TABLE phpbb_users (
 	user_inactive_time INTEGER UNSIGNED NOT NULL DEFAULT '0',
 	user_posts INTEGER UNSIGNED NOT NULL DEFAULT '0',
 	user_lang varchar(30) NOT NULL DEFAULT '',
-	user_timezone decimal(5,2) NOT NULL DEFAULT '0',
-	user_dst INTEGER UNSIGNED NOT NULL DEFAULT '0',
+	user_timezone varchar(100) NOT NULL DEFAULT 'UTC',
 	user_dateformat varchar(30) NOT NULL DEFAULT 'd M Y H:i',
 	user_style INTEGER UNSIGNED NOT NULL DEFAULT '0',
 	user_rank INTEGER UNSIGNED NOT NULL DEFAULT '0',