[ticket/13454] Remove unused variables

This is part 2 of the pr.

PHPBB3-13454

phpBB/phpbb/captcha/plugins/captcha_abstract.php

@@ -191,7 +191,7 @@ abstract class captcha_abstract
 
 	function validate()
 	{
-		global $config, $db, $user;
+		global $user;
 
 		if (!$user->is_setup())
 		{

phpBB/phpbb/db/extractor/oracle_extractor.php

@@ -192,8 +192,6 @@ class oracle_extractor extends base_extractor
 			$ary_name[$i] = ocicolumnname($result, $i + 1);
 		}
 
-		$sql_data = '';
-
 		while ($row = $this->db->sql_fetchrow($result))
 		{
 			$schema_vals = $schema_fields = array();

phpBB/phpbb/log/log.php

@@ -420,7 +420,7 @@ class log implements \phpbb\log\log_interface
 		$this->entry_count = 0;
 		$this->last_page_offset = $offset;
 
-		$post_id_list = $topic_id_list = $reportee_id_list = array();
+		$topic_id_list = $reportee_id_list = array();
 
 		$profile_url = ($this->get_is_admin() && $this->phpbb_admin_path) ? append_sid("{$this->phpbb_admin_path}index.{$this->php_ext}", 'i=users&mode=overview') : append_sid("{$this->phpbb_root_path}memberlist.{$this->php_ext}", 'mode=viewprofile');
 

phpBB/phpbb/search/fulltext_native.php

@@ -352,9 +352,6 @@ class fulltext_native extends \phpbb\search\base
 		$this->must_not_contain_ids = array();
 		$this->must_exclude_one_ids = array();
 
-		$mode = '';
-		$ignore_no_id = true;
-
 		foreach ($query as $word)
 		{
 			if (empty($word))

phpBB/phpbb/search/fulltext_sphinx.php

@@ -404,7 +404,7 @@ class fulltext_sphinx
 					$variable = $section->get_variable_by_name($key);
 					if (!$variable)
 					{
-						$variable = $section->create_variable($key, $value);
+						$section->create_variable($key, $value);
 					}
 					else
 					{
@@ -413,7 +413,7 @@ class fulltext_sphinx
 				}
 				else
 				{
-					$variable = $section->create_variable($key, $value);
+					$section->create_variable($key, $value);
 				}
 			}
 		}
@@ -437,7 +437,6 @@ class fulltext_sphinx
 			$match		= array('#\sand\s#i', '#\sor\s#i', '#\snot\s#i', '#\+#', '#-#', '#\|#', '#@#');
 			$replace	= array(' & ', ' | ', '  - ', ' +', ' -', ' |', '');
 
-			$replacements = 0;
 			$keywords = preg_replace($match, $replace, $keywords);
 			$this->sphinx->SetMatchMode(SPH_MATCH_EXTENDED);
 		}

phpBB/phpbb/textformatter/s9e/renderer.php

@@ -232,7 +232,6 @@ class renderer implements \phpbb\textformatter\renderer_interface
 		{
 			$xml = $this->quote_helper->inject_metadata($xml);
 		}
-		$renderer = $this;
 
 		/**
 		* Modify a parsed text before it is rendered

phpBB/phpbb/tree/nestedset.php

@@ -391,7 +391,6 @@ abstract class nestedset implements \phpbb\tree\tree_interface
 			throw new \OutOfBoundsException($this->message_prefix . 'INVALID_PARENT');
 		}
 
-		$diff = sizeof($move_items) * 2;
 		$sql_exclude_moved_items = $this->db->sql_in_set($this->column_item_id, $move_items, true);
 
 		$this->db->sql_transaction('begin');

phpBB/phpbb/user.php

@@ -281,7 +281,7 @@ class user extends \phpbb\session
 		// User has wrong style
 		if (!$this->style && $style_id == $this->data['user_style'])
 		{
-			$style_id = $this->data['user_style'] = $config['default_style'];
+			$this->data['user_style'] = $config['default_style'];
 
 			$sql = 'UPDATE ' . USERS_TABLE . "
 				SET user_style = $style_id