diff --git a/phpBB/includes/acp/acp_attachments.php b/phpBB/includes/acp/acp_attachments.php
index 92363b0ff9..5fa1f0beb3 100644
--- a/phpBB/includes/acp/acp_attachments.php
+++ b/phpBB/includes/acp/acp_attachments.php
@@ -272,15 +272,13 @@ class acp_attachments
 				$result = $db->sql_query($sql);
 
 				$defined_ips = '';
-				$ips = array();
 
 				while ($row = $db->sql_fetchrow($result))
 				{
-					$value = ($row['site_ip']) ? $row['site_ip'] : $row['site_hostname'];
+					$value = $row['site_ip'] ?: $row['site_hostname'];
 					if ($value)
 					{
 						$defined_ips .= '<option' . (($row['ip_exclude']) ? ' class="sep"' : '') . ' value="' . $row['site_id'] . '">' . $value . '</option>';
-						$ips[$row['site_id']] = $value;
 					}
 				}
 				$db->sql_freeresult($result);
@@ -353,7 +351,6 @@ class acp_attachments
 			break;
 
 			case 'extensions':
-
 				if ($submit || isset($_POST['add_extension_check']))
 				{
 					if ($submit)
@@ -422,30 +419,27 @@ class acp_attachments
 
 					if ($add_extension && $add)
 					{
+						$sql = 'SELECT extension_id
+							FROM ' . EXTENSIONS_TABLE . "
+							WHERE extension = '" . $db->sql_escape($add_extension) . "'";
+						$result = $db->sql_query($sql);
+
+						if ($row = $db->sql_fetchrow($result))
+						{
+							$error[] = sprintf($user->lang['EXTENSION_EXIST'], $add_extension);
+						}
+						$db->sql_freeresult($result);
+
 						if (!count($error))
 						{
-							$sql = 'SELECT extension_id
-								FROM ' . EXTENSIONS_TABLE . "
-								WHERE extension = '" . $db->sql_escape($add_extension) . "'";
-							$result = $db->sql_query($sql);
+							$sql_ary = array(
+								'group_id'	=>	$add_extension_group,
+								'extension'	=>	$add_extension
+							);
 
-							if ($row = $db->sql_fetchrow($result))
-							{
-								$error[] = sprintf($user->lang['EXTENSION_EXIST'], $add_extension);
-							}
-							$db->sql_freeresult($result);
+							$db->sql_query('INSERT INTO ' . EXTENSIONS_TABLE . ' ' . $db->sql_build_array('INSERT', $sql_ary));
 
-							if (!count($error))
-							{
-								$sql_ary = array(
-									'group_id'	=>	$add_extension_group,
-									'extension'	=>	$add_extension
-								);
-
-								$db->sql_query('INSERT INTO ' . EXTENSIONS_TABLE . ' ' . $db->sql_build_array('INSERT', $sql_ary));
-
-								$phpbb_log->add('admin', $user->data['user_id'], $user->ip, 'LOG_ATTACH_EXT_ADD', false, array($add_extension));
-							}
+							$phpbb_log->add('admin', $user->data['user_id'], $user->ip, 'LOG_ATTACH_EXT_ADD', false, array($add_extension));
 						}
 					}
 
@@ -747,7 +741,7 @@ class acp_attachments
 							$imglist = array_values($imglist);
 							$imglist = $imglist[0];
 
-							foreach ($imglist as $key => $img)
+							foreach ($imglist as $img)
 							{
 								if (!$ext_group_row['upload_icon'])
 								{
@@ -770,7 +764,7 @@ class acp_attachments
 
 						$i = 0;
 						$assigned_extensions = '';
-						foreach ($extensions as $num => $row)
+						foreach ($extensions as $row)
 						{
 							if ($row['group_id'] == $group_id && $group_id)
 							{
@@ -819,8 +813,8 @@ class acp_attachments
 							ORDER BY left_id ASC';
 						$result = $db->sql_query($sql, 600);
 
-						$right = $cat_right = $padding_inc = 0;
-						$padding = $forum_list = $holding = '';
+						$right = $cat_right = 0;
+						$padding = $holding = '';
 						$padding_store = array('0' => '');
 
 						while ($row = $db->sql_fetchrow($result))
@@ -1131,6 +1125,8 @@ class acp_attachments
 							WHERE ' . $db->sql_in_set('attach_id', $delete_files) . '
 								AND is_orphan = 0';
 						$result = $db->sql_query($sql);
+
+						$deleted_filenames = [];
 						while ($row = $db->sql_fetchrow($result))
 						{
 							$deleted_filenames[] = $row['real_filename'];
diff --git a/phpBB/includes/acp/acp_bbcodes.php b/phpBB/includes/acp/acp_bbcodes.php
index 3c0371a3a7..edf044e0aa 100644
--- a/phpBB/includes/acp/acp_bbcodes.php
+++ b/phpBB/includes/acp/acp_bbcodes.php
@@ -216,15 +216,6 @@ class acp_bbcodes
 						}
 					}
 
-					if (substr($data['bbcode_tag'], -1) === '=')
-					{
-						$test = substr($data['bbcode_tag'], 0, -1);
-					}
-					else
-					{
-						$test = $data['bbcode_tag'];
-					}
-
 					if (strlen($data['bbcode_tag']) > 16)
 					{
 						trigger_error($user->lang['BBCODE_TAG_TOO_LONG'] . adm_back_link($this->u_action), E_USER_WARNING);
diff --git a/phpBB/includes/acp/acp_forums.php b/phpBB/includes/acp/acp_forums.php
index ba3901f67a..077c037484 100644
--- a/phpBB/includes/acp/acp_forums.php
+++ b/phpBB/includes/acp/acp_forums.php
@@ -1224,7 +1224,7 @@ class acp_forums
 					if ($action_subforums == 'delete')
 					{
 						$rows = get_forum_branch($row['forum_id'], 'children', 'descending', false);
-
+						$forum_ids = [];
 						foreach ($rows as $_row)
 						{
 							// Do not remove the forum id we are about to change. ;)
@@ -2183,29 +2183,4 @@ class acp_forums
 
 		adm_page_footer();
 	}
-
-	/**
-	* Display copy permission page
-	* Not used at the moment - we will have a look at it for 3.0.7
-	*/
-	function copy_permission_page($forum_data)
-	{
-		global $phpEx, $phpbb_admin_path, $template, $user;
-
-		$acl_url = '&amp;mode=setting_forum_local&amp;forum_id[]=' . $forum_data['forum_id'];
-		$action = append_sid($this->u_action . "&amp;parent_id={$this->parent_id}&amp;f={$forum_data['forum_id']}&amp;action=copy_perm");
-
-		$l_acl = sprintf($user->lang['COPY_TO_ACL'], '<a href="' . append_sid("{$phpbb_admin_path}index.$phpEx", 'i=permissions' . $acl_url) . '">', '</a>');
-
-		$this->tpl_name = 'acp_forums_copy_perm';
-
-		$template->assign_vars(array(
-			'U_ACL'				=> append_sid("{$phpbb_admin_path}index.$phpEx", 'i=permissions' . $acl_url),
-			'L_ACL_LINK'		=> $l_acl,
-			'L_BACK_LINK'		=> adm_back_link($this->u_action . '&amp;parent_id=' . $this->parent_id),
-			'S_COPY_ACTION'		=> $action,
-			'S_FORUM_OPTIONS'	=> make_forum_select($forum_data['parent_id'], $forum_data['forum_id'], false, false, false),
-		));
-	}
-
 }
diff --git a/phpBB/includes/acp/acp_icons.php b/phpBB/includes/acp/acp_icons.php
index 6429424983..b0be8b6135 100644
--- a/phpBB/includes/acp/acp_icons.php
+++ b/phpBB/includes/acp/acp_icons.php
@@ -40,7 +40,6 @@ class acp_icons
 		$action = (isset($_POST['edit'])) ? 'edit' : $action;
 		$action = (isset($_POST['import'])) ? 'import' : $action;
 		$icon_id = $request->variable('id', 0);
-		$submit = $request->is_set_post('submit', false);
 
 		$form_key = 'acp_icons';
 		add_form_key($form_key);
@@ -148,7 +147,7 @@ class acp_icons
 			case 'add':
 
 				$smilies = $default_row = array();
-				$smiley_options = $order_list = $add_order_list = '';
+				$smiley_options = '';
 
 				if ($action == 'add' && $mode == 'smilies')
 				{
diff --git a/phpBB/includes/acp/acp_logs.php b/phpBB/includes/acp/acp_logs.php
index b98cd64f49..4e5c1f3f88 100644
--- a/phpBB/includes/acp/acp_logs.php
+++ b/phpBB/includes/acp/acp_logs.php
@@ -21,7 +21,7 @@ if (!defined('IN_PHPBB'))
 
 class acp_logs
 {
-	var $u_action;
+	public $u_action;
 
 	function main($id, $mode)
 	{
@@ -45,7 +45,6 @@ class acp_logs
 		$sort_dir	= $request->variable('sd', 'd');
 
 		$this->tpl_name = 'acp_logs';
-		$this->log_type = constant('LOG_' . strtoupper($mode));
 
 		/* @var $pagination \phpbb\pagination */
 		$pagination = $phpbb_container->get('pagination');
diff --git a/phpBB/includes/acp/acp_main.php b/phpBB/includes/acp/acp_main.php
index 80e102db21..5fac9de7ef 100644
--- a/phpBB/includes/acp/acp_main.php
+++ b/phpBB/includes/acp/acp_main.php
@@ -197,7 +197,6 @@ class acp_main
 						}
 
 						// Resync post counts
-						$start = $max_post_id = 0;
 
 						// Find the maximum post ID, we can only stop the cycle when we've reached it
 						$sql = 'SELECT MAX(forum_last_post_id) as max_post_id
@@ -226,6 +225,7 @@ class acp_main
 						$step = ($config['num_posts']) ? (max((int) ($config['num_posts'] / 5), 20000)) : 20000;
 						$db->sql_query('UPDATE ' . USERS_TABLE . ' SET user_posts = 0');
 
+						$start = 0;
 						while ($start < $max_post_id)
 						{
 							$sql = 'SELECT COUNT(post_id) AS num_posts, poster_id
diff --git a/phpBB/includes/acp/acp_modules.php b/phpBB/includes/acp/acp_modules.php
index fb0c09055e..8b09dfa911 100644
--- a/phpBB/includes/acp/acp_modules.php
+++ b/phpBB/includes/acp/acp_modules.php
@@ -75,7 +75,6 @@ class acp_modules
 		$this->parent_id = $request->variable('parent_id', 0);
 		$module_id = $request->variable('m', 0);
 		$action = $request->variable('action', '');
-		$errors = array();
 
 		switch ($action)
 		{
@@ -249,12 +248,8 @@ class acp_modules
 							trigger_error($msg . adm_back_link($this->u_action . '&amp;parent_id=' . $this->parent_id), E_USER_WARNING);
 						}
 
-						if (!count($errors))
-						{
-							$module_manager->remove_cache_file($this->module_class);
-
-							trigger_error($user->lang['MODULE_ADDED'] . adm_back_link($this->u_action . '&amp;parent_id=' . $this->parent_id));
-						}
+						$module_manager->remove_cache_file($this->module_class);
+						trigger_error($user->lang['MODULE_ADDED'] . adm_back_link($this->u_action . '&amp;parent_id=' . $this->parent_id));
 					}
 				}
 				else
@@ -364,12 +359,8 @@ class acp_modules
 						trigger_error($msg . adm_back_link($this->u_action . '&amp;parent_id=' . $this->parent_id), E_USER_WARNING);
 					}
 
-					if (!count($errors))
-					{
-						$module_manager->remove_cache_file($this->module_class);
-
-						trigger_error((($action == 'add') ? $user->lang['MODULE_ADDED'] : $user->lang['MODULE_EDITED']) . adm_back_link($this->u_action . '&amp;parent_id=' . $this->parent_id));
-					}
+					$module_manager->remove_cache_file($this->module_class);
+					trigger_error((($action == 'add') ? $user->lang['MODULE_ADDED'] : $user->lang['MODULE_EDITED']) . adm_back_link($this->u_action . '&amp;parent_id=' . $this->parent_id));
 				}
 
 				// Category/not category?
@@ -430,38 +421,11 @@ class acp_modules
 					array_change_key_case($module_data, CASE_UPPER))
 				);
 
-				if (count($errors))
-				{
-					$template->assign_vars(array(
-						'S_ERROR'	=> true,
-						'ERROR_MSG'	=> implode('<br />', $errors))
-					);
-				}
-
 				return;
 
 			break;
 		}
 
-		// Default management page
-		if (count($errors))
-		{
-			if ($request->is_ajax())
-			{
-				$json_response = new \phpbb\json_response;
-				$json_response->send(array(
-					'MESSAGE_TITLE'	=> $user->lang('ERROR'),
-					'MESSAGE_TEXT'	=> implode('<br />', $errors),
-					'SUCCESS'	=> false,
-				));
-			}
-
-			$template->assign_vars(array(
-				'S_ERROR'	=> true,
-				'ERROR_MSG'	=> implode('<br />', $errors))
-			);
-		}
-
 		if (!$this->parent_id)
 		{
 			$navigation = strtoupper($this->module_class);
@@ -605,7 +569,7 @@ class acp_modules
 			ORDER BY left_id ASC";
 		$result = $db->sql_query($sql);
 
-		$right = $iteration = 0;
+		$right = 0;
 		$padding_store = array('0' => '');
 		$module_list = $padding = '';
 
diff --git a/phpBB/includes/acp/acp_permissions.php b/phpBB/includes/acp/acp_permissions.php
index 80c65cfd6f..fdab868068 100644
--- a/phpBB/includes/acp/acp_permissions.php
+++ b/phpBB/includes/acp/acp_permissions.php
@@ -1060,11 +1060,11 @@ class acp_permissions
 
 			foreach ($hold_ary as $group_id => $forum_ary)
 			{
-				$groups[$group_id]['auth_setting'] = $hold_ary[$group_id][$forum_id][$permission];
+				$groups[$group_id]['auth_setting'] = $forum_ary[$forum_id][$permission];
 			}
 			unset($hold_ary);
 
-			foreach ($groups as $id => $row)
+			foreach ($groups as $row)
 			{
 				switch ($row['auth_setting'])
 				{
diff --git a/phpBB/includes/acp/acp_profile.php b/phpBB/includes/acp/acp_profile.php
index 49da7d84a4..a234a511b9 100644
--- a/phpBB/includes/acp/acp_profile.php
+++ b/phpBB/includes/acp/acp_profile.php
@@ -344,10 +344,10 @@ class acp_profile
 
 					$s_hidden_fields = '<input type="hidden" name="field_id" value="' . $field_id . '" />';
 				}
-				else
+				else // action = create
 				{
 					// We are adding a new field, define basic params
-					$lang_options = $field_row = array();
+					$lang_options = array();
 
 					$field_type = $request->variable('field_type', '');
 
@@ -475,41 +475,6 @@ class acp_profile
 					$cp->vars[$key] = $var;
 				}
 
-				// step 3 - all arrays
-				if ($action == 'edit')
-				{
-					// Get language entries
-					$sql = 'SELECT *
-						FROM ' . PROFILE_FIELDS_LANG_TABLE . '
-						WHERE lang_id <> ' . $this->edit_lang_id . "
-							AND field_id = $field_id
-						ORDER BY option_id ASC";
-					$result = $db->sql_query($sql);
-
-					$l_lang_options = array();
-					while ($row = $db->sql_fetchrow($result))
-					{
-						$l_lang_options[$row['lang_id']][$row['option_id']] = $row['lang_value'];
-					}
-					$db->sql_freeresult($result);
-
-					$sql = 'SELECT lang_id, lang_name, lang_explain, lang_default_value
-						FROM ' . PROFILE_LANG_TABLE . '
-						WHERE lang_id <> ' . $this->edit_lang_id . "
-							AND field_id = $field_id
-						ORDER BY lang_id ASC";
-					$result = $db->sql_query($sql);
-
-					$l_lang_name = $l_lang_explain = $l_lang_default_value = array();
-					while ($row = $db->sql_fetchrow($result))
-					{
-						$l_lang_name[$row['lang_id']] = $row['lang_name'];
-						$l_lang_explain[$row['lang_id']] = $row['lang_explain'];
-						$l_lang_default_value[$row['lang_id']] = $row['lang_default_value'];
-					}
-					$db->sql_freeresult($result);
-				}
-
 				foreach ($exclude[3] as $key)
 				{
 					$cp->vars[$key] = $request->variable($key, array(0 => ''), true);
@@ -670,7 +635,7 @@ class acp_profile
 						// Build options based on profile type
 						$options = $profile_field->get_options($this->lang_defs['iso'][$config['default_lang']], $cp->vars);
 
-						foreach ($options as $num => $option_ary)
+						foreach ($options as $option_ary)
 						{
 							$template->assign_block_vars('option', $option_ary);
 						}
diff --git a/phpBB/includes/acp/acp_prune.php b/phpBB/includes/acp/acp_prune.php
index c5f7789de8..705d8ed62d 100644
--- a/phpBB/includes/acp/acp_prune.php
+++ b/phpBB/includes/acp/acp_prune.php
@@ -110,6 +110,7 @@ class acp_prune
 				if ($row = $db->sql_fetchrow($result))
 				{
 					$prune_ids = array();
+					$p_result = [];
 					$p_result['topics'] = 0;
 					$p_result['posts'] = 0;
 					$log_data = '';
diff --git a/phpBB/includes/acp/acp_storage.php b/phpBB/includes/acp/acp_storage.php
index f6dce91ff9..2f651f0e18 100644
--- a/phpBB/includes/acp/acp_storage.php
+++ b/phpBB/includes/acp/acp_storage.php
@@ -21,7 +21,7 @@ if (!defined('IN_PHPBB'))
 
 class acp_storage
 {
-	/** @var \phpbb\config $config */
+	/** @var \phpbb\config\config $config */
 	protected $config;
 
 	/** @var \phpbb\language\language $lang */
@@ -33,9 +33,6 @@ class acp_storage
 	/** @var \phpbb\template\template */
 	protected $template;
 
-	/** @var \phpbb\user */
-	protected $user;
-
 	/** @var \phpbb\di\service_collection */
 	protected $provider_collection;
 
@@ -70,7 +67,6 @@ class acp_storage
 		$this->lang = $phpbb_container->get('language');
 		$this->request = $phpbb_container->get('request');
 		$this->template = $phpbb_container->get('template');
-		$this->user = $phpbb_container->get('user');
 		$this->provider_collection = $phpbb_container->get('storage.provider_collection');
 		$this->storage_collection = $phpbb_container->get('storage.storage_collection');
 		$this->phpbb_root_path = $phpbb_root_path;
diff --git a/phpBB/includes/mcp/mcp_main.php b/phpBB/includes/mcp/mcp_main.php
index 5ca5d22d66..df6fe9f95b 100644
--- a/phpBB/includes/mcp/mcp_main.php
+++ b/phpBB/includes/mcp/mcp_main.php
@@ -594,11 +594,6 @@ function mcp_move_topic($topic_ids)
 		$topic_data = phpbb_get_topic_data($topic_ids);
 		$leave_shadow = (isset($_POST['move_leave_shadow'])) ? true : false;
 
-		$forum_sync_data = array();
-
-		$forum_sync_data[$forum_id] = current($topic_data);
-		$forum_sync_data[$to_forum_id] = $forum_data;
-
 		$topics_moved = $topics_moved_unapproved = $topics_moved_softdeleted = 0;
 		$posts_moved = $posts_moved_unapproved = $posts_moved_softdeleted = 0;
 
@@ -636,12 +631,8 @@ function mcp_move_topic($topic_ids)
 		}
 
 		$shadow_topics = 0;
-		$forum_ids = array($to_forum_id);
 		foreach ($topic_data as $topic_id => $row)
 		{
-			// Get the list of forums to resync
-			$forum_ids[] = $row['forum_id'];
-
 			// We add the $to_forum_id twice, because 'forum_id' is updated
 			// when the topic is moved again later.
 			$phpbb_log->add('mod', $user->data['user_id'], $user->ip, 'LOG_MOVE', false, array(
@@ -1202,7 +1193,7 @@ function mcp_delete_post($post_ids, $is_soft = false, $soft_delete_reason = '',
 
 		$post_data = phpbb_get_post_data($post_ids);
 
-		foreach ($post_data as $id => $row)
+		foreach ($post_data as $row)
 		{
 			$post_username = ($row['poster_id'] == ANONYMOUS && !empty($row['post_username'])) ? $row['post_username'] : $row['username'];
 			$phpbb_log->add('mod', $user->data['user_id'], $user->ip, 'LOG_DELETE_POST', false, array(
@@ -1741,7 +1732,7 @@ function mcp_fork_topic($topic_ids)
 		$config->increment('num_topics', count($new_topic_id_list), false);
 		$config->increment('num_posts', $total_posts, false);
 
-		foreach ($new_topic_id_list as $topic_id => $new_topic_id)
+		foreach ($new_topic_id_list as $new_topic_id)
 		{
 			$phpbb_log->add('mod', $user->data['user_id'], $user->ip, 'LOG_FORK', false, array(
 				'forum_id' => $to_forum_id,
diff --git a/phpBB/includes/mcp/mcp_pm_reports.php b/phpBB/includes/mcp/mcp_pm_reports.php
index eecfe9cbc8..63fabb35db 100644
--- a/phpBB/includes/mcp/mcp_pm_reports.php
+++ b/phpBB/includes/mcp/mcp_pm_reports.php
@@ -135,6 +135,7 @@ class mcp_pm_reports
 						ORDER BY filetime DESC';
 					$result = $db->sql_query($sql);
 
+					$attachments = [];
 					while ($row = $db->sql_fetchrow($result))
 					{
 						$attachments[] = $row;
@@ -242,12 +243,10 @@ class mcp_pm_reports
 					ORDER BY $sort_order_sql";
 				$result = $db->sql_query_limit($sql, $config['topics_per_page'], $start);
 
-				$i = 0;
 				$report_ids = array();
 				while ($row = $db->sql_fetchrow($result))
 				{
 					$report_ids[] = $row['report_id'];
-					$row_num[$row['report_id']] = $i++;
 				}
 				$db->sql_freeresult($result);
 
diff --git a/phpBB/includes/mcp/mcp_post.php b/phpBB/includes/mcp/mcp_post.php
index 3f399dd0c6..f8e316c0ca 100644
--- a/phpBB/includes/mcp/mcp_post.php
+++ b/phpBB/includes/mcp/mcp_post.php
@@ -129,7 +129,7 @@ function mcp_post_details($id, $mode, $action)
 
 	// Set some vars
 	$users_ary = $usernames_ary = array();
-	$attachments = $extensions = array();
+	$attachments = array();
 	$post_id = $post_info['post_id'];
 
 	// Get topic tracking info
diff --git a/phpBB/includes/mcp/mcp_queue.php b/phpBB/includes/mcp/mcp_queue.php
index eebb8e4fc4..bff8412cb6 100644
--- a/phpBB/includes/mcp/mcp_queue.php
+++ b/phpBB/includes/mcp/mcp_queue.php
@@ -369,7 +369,6 @@ class mcp_queue
 				$user->add_lang(array('viewtopic', 'viewforum'));
 
 				$topic_id = $request->variable('t', 0);
-				$forum_info = array();
 
 				// If 'sort' is set, "Go" was pressed which is located behind the forums <select> box
 				// Then, unset the topic id so it does not override the forum id
@@ -413,13 +412,6 @@ class mcp_queue
 					{
 						trigger_error('NOT_MODERATOR');
 					}
-
-					$sql = 'SELECT SUM(forum_topics_approved) as sum_forum_topics
-						FROM ' . FORUMS_TABLE . '
-						WHERE ' . $db->sql_in_set('forum_id', $forum_list);
-					$result = $db->sql_query($sql);
-					$forum_info['forum_topics_approved'] = (int) $db->sql_fetchfield('sum_forum_topics');
-					$db->sql_freeresult($result);
 				}
 				else
 				{
@@ -486,12 +478,10 @@ class mcp_queue
 
 					$result = $db->sql_query_limit($sql, $config['topics_per_page'], $start);
 
-					$i = 0;
 					$post_ids = array();
 					while ($row = $db->sql_fetchrow($result))
 					{
 						$post_ids[] = $row['post_id'];
-						$row_num[$row['post_id']] = $i++;
 					}
 					$db->sql_freeresult($result);
 
diff --git a/phpBB/includes/mcp/mcp_reports.php b/phpBB/includes/mcp/mcp_reports.php
index d8910f8659..1cd27de1a2 100644
--- a/phpBB/includes/mcp/mcp_reports.php
+++ b/phpBB/includes/mcp/mcp_reports.php
@@ -342,7 +342,6 @@ class mcp_reports
 					$topic_id = $request->variable('t', 0, false, \phpbb\request\request_interface::POST);
 				}
 
-				$forum_info = array();
 				$forum_list_reports = get_forum_list('m_report', false, true);
 				$forum_list_read = array_flip(get_forum_list('f_read', true, true)); // Flipped so we can isset() the forum IDs
 
@@ -389,13 +388,6 @@ class mcp_reports
 					{
 						trigger_error('NOT_MODERATOR');
 					}
-
-					$sql = 'SELECT SUM(forum_topics_approved) as sum_forum_topics
-						FROM ' . FORUMS_TABLE . '
-						WHERE ' . $db->sql_in_set('forum_id', $forum_list);
-					$result = $db->sql_query($sql);
-					$forum_info['forum_topics_approved'] = (int) $db->sql_fetchfield('sum_forum_topics');
-					$db->sql_freeresult($result);
 				}
 				else
 				{
diff --git a/phpBB/includes/ucp/ucp_login_link.php b/phpBB/includes/ucp/ucp_login_link.php
index 8f7c212aaa..c7c66304b0 100644
--- a/phpBB/includes/ucp/ucp_login_link.php
+++ b/phpBB/includes/ucp/ucp_login_link.php
@@ -199,7 +199,7 @@ class ucp_login_link
 	*/
 	protected function process_login_result($result)
 	{
-		global $config, $template, $user, $phpbb_container;
+		global $config, $template, $user, $phpbb_container, $phpbb_root_path, $phpEx;
 
 		$login_error = null;
 
diff --git a/phpBB/includes/ucp/ucp_main.php b/phpBB/includes/ucp/ucp_main.php
index afd0ca9941..7d2a4616cc 100644
--- a/phpBB/includes/ucp/ucp_main.php
+++ b/phpBB/includes/ucp/ucp_main.php
@@ -658,6 +658,7 @@ class ucp_main
 						WHERE ' . $db->sql_in_set('topic_id', array_unique($topic_ids));
 					$result = $db->sql_query($sql);
 
+					$topic_rows = [];
 					while ($row = $db->sql_fetchrow($result))
 					{
 						$topic_rows[$row['topic_id']] = $row;
@@ -882,7 +883,7 @@ class ucp_main
 		$sql = $db->sql_build_query('SELECT', $sql_array);
 		$result = $db->sql_query_limit($sql, $config['topics_per_page'], $start);
 
-		$topic_list = $topic_forum_list = $global_announce_list = $rowset = array();
+		$topic_list = $topic_forum_list = $rowset = array();
 		while ($row = $db->sql_fetchrow($result))
 		{
 			$topic_id = (isset($row['b_topic_id'])) ? $row['b_topic_id'] : $row['topic_id'];
@@ -892,11 +893,6 @@ class ucp_main
 
 			$topic_forum_list[$row['forum_id']]['forum_mark_time'] = ($config['load_db_lastread']) ? $row['forum_mark_time'] : 0;
 			$topic_forum_list[$row['forum_id']]['topics'][] = $topic_id;
-
-			if ($row['topic_type'] == POST_GLOBAL)
-			{
-				$global_announce_list[] = $topic_id;
-			}
 		}
 		$db->sql_freeresult($result);
 
diff --git a/phpBB/includes/ucp/ucp_pm.php b/phpBB/includes/ucp/ucp_pm.php
index d8633975a9..b3a278fb9c 100644
--- a/phpBB/includes/ucp/ucp_pm.php
+++ b/phpBB/includes/ucp/ucp_pm.php
@@ -45,7 +45,7 @@ class ucp_pm
 
 	function main($id, $mode)
 	{
-		global $user, $template, $phpbb_root_path, $auth, $phpEx, $db, $config, $request;
+		global $user, $template, $phpbb_root_path, $auth, $phpEx, $db, $config, $request, $global_privmsgs_rules, $global_rule_conditions;
 
 		if (!$user->data['is_registered'])
 		{
diff --git a/phpBB/includes/ucp/ucp_pm_compose.php b/phpBB/includes/ucp/ucp_pm_compose.php
index 7cb4c85916..b08dc1275f 100644
--- a/phpBB/includes/ucp/ucp_pm_compose.php
+++ b/phpBB/includes/ucp/ucp_pm_compose.php
@@ -1030,7 +1030,7 @@ function compose_pm($id, $mode, $action, $user_folders = array())
 
 			parse_attachments(false, $preview_message, $attachment_data, $update_count, true);
 
-			foreach ($attachment_data as $i => $attachment)
+			foreach ($attachment_data as $attachment)
 			{
 				$template->assign_block_vars('attachment', array(
 					'DISPLAY_ATTACHMENT'	=> $attachment)
diff --git a/phpBB/includes/ucp/ucp_profile.php b/phpBB/includes/ucp/ucp_profile.php
index 51ab5eddac..12ba01fb00 100644
--- a/phpBB/includes/ucp/ucp_profile.php
+++ b/phpBB/includes/ucp/ucp_profile.php
@@ -37,7 +37,7 @@ class ucp_profile
 		$user->add_lang('posting');
 
 		$submit		= $request->variable('submit', false, false, \phpbb\request\request_interface::POST);
-		$error = $data = array();
+		$error = array();
 		$s_hidden_fields = '';
 
 		switch ($mode)
diff --git a/phpBB/includes/ucp/ucp_register.php b/phpBB/includes/ucp/ucp_register.php
index 38a2bd4fc5..6c35f27d9a 100644
--- a/phpBB/includes/ucp/ucp_register.php
+++ b/phpBB/includes/ucp/ucp_register.php
@@ -106,7 +106,7 @@ class ucp_register
 		/* @var $cp \phpbb\profilefields\manager */
 		$cp = $phpbb_container->get('profilefields.manager');
 
-		$error = $cp_data = $cp_error = array();
+		$error = $cp_data = array();
 		$s_hidden_fields = array();
 
 		// Handle login_link data added to $_hidden_fields