5 files changed, 29 insertions, 12 deletions
diff --git a/phpBB/includes/acp/acp_attachments.php b/phpBB/includes/acp/acp_attachments.php
index 5b1db5c31b..a7035f38b7 100644
--- a/phpBB/includes/acp/acp_attachments.php
+++ b/phpBB/includes/acp/acp_attachments.php
@@ -1240,13 +1240,17 @@ class acp_attachments
 					$display_cat = isset($extensions[$row['extension']]['display_cat']) ? $extensions[$row['extension']]['display_cat'] : ATTACHMENT_CATEGORY_NONE;
 					$l_downloaded_viewed = ($display_cat == ATTACHMENT_CATEGORY_NONE) ? 'DOWNLOAD_COUNTS' : 'VIEWED_COUNTS';
 
+					// Capitalises the group name and checks if its key exists in the language file
+					$up_group_name = utf8_strtoupper($extensions[$row['extension']]['group_name']);
+					$ext_group_name = (!empty($up_group_name)) ? (isset($user->lang['EXT_GROUP_' .  $up_group_name]) ? $user->lang['EXT_GROUP_' .  $up_group_name] : '') : '';
+
 					$template->assign_block_vars('attachments', array(
 						'ATTACHMENT_POSTER'	=> get_username_string('full', (int) $row['poster_id'], (string) $row['username'], (string) $row['user_colour'], (string) $row['username']),
 						'FILESIZE'			=> get_formatted_filesize((int) $row['filesize']),
 						'FILETIME'			=> $user->format_date((int) $row['filetime']),
 						'REAL_FILENAME'		=> (!$row['in_message']) ? utf8_basename((string) $row['real_filename']) : '',
 						'PHYSICAL_FILENAME'	=> utf8_basename((string) $row['physical_filename']),
-						'EXT_GROUP_NAME'	=> (!empty($extensions[$row['extension']]['group_name'])) ? $user->lang['EXT_GROUP_' . $extensions[$row['extension']]['group_name']] : '',
+						'EXT_GROUP_NAME'	=> $ext_group_name,
 						'COMMENT'			=> $comment,
 						'TOPIC_TITLE'		=> (!$row['in_message']) ? (string) $row['topic_title'] : '',
 						'ATTACH_ID'			=> (int) $row['attach_id'],
diff --git a/phpBB/includes/acp/acp_board.php b/phpBB/includes/acp/acp_board.php
index f89f5535eb..e348c769bd 100644
--- a/phpBB/includes/acp/acp_board.php
+++ b/phpBB/includes/acp/acp_board.php
@@ -30,10 +30,13 @@ class acp_board
 
 	function main($id, $mode)
 	{
-		global $user, $template, $request;
+		global $user, $template, $request, $language;
 		global $config, $phpbb_root_path, $phpEx;
 		global $cache, $phpbb_container, $phpbb_dispatcher, $phpbb_log;
 
+		/** @var \phpbb\language\language $language Language object */
+		$language = $phpbb_container->get('language');
+
 		$user->add_lang('acp/board');
 
 		$submit = (isset($_POST['submit']) || isset($_POST['allow_quick_reply_enable'])) ? true : false;
@@ -56,7 +59,7 @@ class acp_board
 						'legend1'				=> 'ACP_BOARD_SETTINGS',
 						'sitename'				=> array('lang' => 'SITE_NAME',				'validate' => 'string',	'type' => 'text:40:255', 'explain' => false),
 						'site_desc'				=> array('lang' => 'SITE_DESC',				'validate' => 'string',	'type' => 'text:40:255', 'explain' => false),
-						'site_home_url'			=> array('lang' => 'SITE_HOME_URL',			'validate' => 'string',	'type' => 'url:40:255', 'explain' => true),
+						'site_home_url'			=> array('lang' => 'SITE_HOME_URL',			'validate' => 'url',	'type' => 'url:40:255', 'explain' => true),
 						'site_home_text'		=> array('lang' => 'SITE_HOME_TEXT',		'validate' => 'string',	'type' => 'text:40:255', 'explain' => true),
 						'board_index_text'		=> array('lang' => 'BOARD_INDEX_TEXT',		'validate' => 'string',	'type' => 'text:40:255', 'explain' => true),
 						'board_disable'			=> array('lang' => 'DISABLE_BOARD',			'validate' => 'bool',	'type' => 'custom', 'method' => 'board_disable', 'explain' => true),
@@ -122,6 +125,7 @@ class acp_board
 				$avatar_vars = array();
 				foreach ($avatar_drivers as $current_driver)
 				{
+					/** @var \phpbb\avatar\driver\driver_interface $driver */
 					$driver = $phpbb_avatar_manager->get_driver($current_driver, false);
 
 					/*
@@ -730,7 +734,7 @@ class acp_board
 			$template->assign_block_vars('options', array(
 				'KEY'			=> $config_key,
 				'TITLE'			=> (isset($user->lang[$vars['lang']])) ? $user->lang[$vars['lang']] : $vars['lang'],
-				'S_EXPLAIN'		=> $vars['explain'],
+				'S_EXPLAIN'		=> $vars['explain'] && !empty($l_explain),
 				'TITLE_EXPLAIN'	=> $l_explain,
 				'CONTENT'		=> $content,
 				)
diff --git a/phpBB/includes/acp/acp_database.php b/phpBB/includes/acp/acp_database.php
index 05f2b98524..c33c2e4d6f 100644
--- a/phpBB/includes/acp/acp_database.php
+++ b/phpBB/includes/acp/acp_database.php
@@ -216,7 +216,7 @@ class acp_database
 						}
 						else if (confirm_box(true))
 						{
-							switch ($backup_info['extensions'])
+							switch ($backup_info['extension'])
 							{
 								case 'sql':
 									$fp = fopen($backup_info['file_name'], 'rb');
diff --git a/phpBB/includes/acp/acp_forums.php b/phpBB/includes/acp/acp_forums.php
index be5a7a2f26..cb0593b14a 100644
--- a/phpBB/includes/acp/acp_forums.php
+++ b/phpBB/includes/acp/acp_forums.php
@@ -986,6 +986,13 @@ class acp_forums
 			$errors[] = $user->lang['FORUM_NAME_EMPTY'];
 		}
 
+		// No Emojis
+		if (preg_match_all('/[\x{10000}-\x{10FFFF}]/u', $forum_data_ary['forum_name'], $matches))
+		{
+			$character_list = implode('<br>', $matches[0]);
+			$errors[] = $user->lang('FORUM_NAME_EMOJI', $character_list);
+		}
+
 		if (utf8_strlen($forum_data_ary['forum_desc']) > 4000)
 		{
 			$errors[] = $user->lang['FORUM_DESC_TOO_LONG'];
diff --git a/phpBB/includes/acp/acp_update.php b/phpBB/includes/acp/acp_update.php
index 9124a59ef2..fa3afa6ce3 100644
--- a/phpBB/includes/acp/acp_update.php
+++ b/phpBB/includes/acp/acp_update.php
@@ -59,17 +59,19 @@ class acp_update
 
 		$update_link = $phpbb_root_path . 'install/app.' . $phpEx;
 
-		$template->assign_vars(array(
-			'S_UP_TO_DATE'			=> empty($updates_available),
-			'U_ACTION'				=> $this->u_action,
-			'U_VERSIONCHECK_FORCE'	=> append_sid($this->u_action . '&amp;versioncheck_force=1'),
+		$template_ary = [
+			'S_UP_TO_DATE'				=> empty($updates_available),
+			'U_ACTION'					=> $this->u_action,
+			'U_VERSIONCHECK_FORCE'		=> append_sid($this->u_action . '&amp;versioncheck_force=1'),
 
-			'CURRENT_VERSION'		=> $config['version'],
+			'CURRENT_VERSION'			=> $config['version'],
 
-			'UPDATE_INSTRUCTIONS'	=> sprintf($user->lang['UPDATE_INSTRUCTIONS'], $update_link),
+			'UPDATE_INSTRUCTIONS'		=> $user->lang('UPDATE_INSTRUCTIONS', $update_link),
 			'S_VERSION_UPGRADEABLE'		=> !empty($upgrades_available),
 			'UPGRADE_INSTRUCTIONS'		=> !empty($upgrades_available) ? $user->lang('UPGRADE_INSTRUCTIONS', $upgrades_available['current'], $upgrades_available['announcement']) : false,
-		));
+		];
+
+		$template->assign_vars($template_ary);
 
 		// Incomplete update?
 		if (phpbb_version_compare($config['version'], PHPBB_VERSION, '<'))