remove unused code: vars, foreach keys, etc

22 files changed, 15 insertions, 73 deletions

diff --git a/engine/classes/ElggEntity.php b/engine/classes/ElggEntity.php
index 0cb8e5f7c..f44e73023 100644
--- a/engine/classes/ElggEntity.php
+++ b/engine/classes/ElggEntity.php
@@ -1735,8 +1735,6 @@ abstract class ElggEntity extends ElggData implements
 	 * @return array
 	 */
 	public function getTags($tag_names = NULL) {
-		global $CONFIG;
-
 		if ($tag_names && !is_array($tag_names)) {
 			$tag_names = array($tag_names);
 		}
diff --git a/engine/classes/ElggFile.php b/engine/classes/ElggFile.php
index 3f652ff19..532db3617 100644
--- a/engine/classes/ElggFile.php
+++ b/engine/classes/ElggFile.php
@@ -365,7 +365,6 @@ class ElggFile extends ElggObject {
 		// need to get all filestore::* metadata because the rest are "parameters" that
 		// get passed to filestore::setParameters()
 		if ($this->guid) {
-			$db_prefix = elgg_get_config('dbprefix');
 			$options = array(
 				'guid' => $this->guid,
 				'where' => array("n.string LIKE 'filestore::%'"),
diff --git a/engine/classes/ElggMenuBuilder.php b/engine/classes/ElggMenuBuilder.php
index 028eef15f..6da951597 100644
--- a/engine/classes/ElggMenuBuilder.php
+++ b/engine/classes/ElggMenuBuilder.php
@@ -227,7 +227,6 @@ class ElggMenuBuilder {
 					if ($children) {
 						$stack = array_merge($stack, $children);
 					}
-					$p = count($stack);
 				}
 			}
 		}
diff --git a/engine/lib/annotations.php b/engine/lib/annotations.php
index a95aba8f8..e5566a00a 100644
--- a/engine/lib/annotations.php
+++ b/engine/lib/annotations.php
@@ -465,7 +465,6 @@ function export_annotation_plugin_hook($hook, $entity_type, $returnvalue, $param
 	}
 
 	$guid = (int)$params['guid'];
-	$name = $params['name'];
 
 	$result = elgg_get_annotations(array(
 		'guid' => $guid,
diff --git a/engine/lib/cron.php b/engine/lib/cron.php
index dd83a9849..4f3d05b93 100644
--- a/engine/lib/cron.php
+++ b/engine/lib/cron.php
@@ -30,8 +30,6 @@ function cron_init() {
  * @access private
  */
 function cron_page_handler($page) {
-	global $CONFIG;
-
 	if (!isset($page[0])) {
 		forward();
 	}
diff --git a/engine/lib/database.php b/engine/lib/database.php
index 18c30cb8e..dcf50545d 100644
--- a/engine/lib/database.php
+++ b/engine/lib/database.php
@@ -79,7 +79,7 @@ $dbcalls = 0;
  */
 function establish_db_link($dblinkname = "readwrite") {
 	// Get configuration, and globalise database link
-	global $CONFIG, $dblink, $DB_QUERY_CACHE, $dbcalls;
+	global $CONFIG, $dblink, $DB_QUERY_CACHE;
 
 	if ($dblinkname != "readwrite" && isset($CONFIG->db[$dblinkname])) {
 		if (is_array($CONFIG->db[$dblinkname])) {
@@ -137,7 +137,7 @@ function establish_db_link($dblinkname = "readwrite") {
  * @access private
  */
 function setup_db_connections() {
-	global $CONFIG, $dblink;
+	global $CONFIG;
 
 	if (!empty($CONFIG->db->split)) {
 		establish_db_link('read');
@@ -250,7 +250,7 @@ function explain_query($query, $link) {
  * @access private
  */
 function execute_query($query, $dblink) {
-	global $CONFIG, $dbcalls;
+	global $dbcalls;
 
 	if ($query == NULL) {
 		throw new DatabaseException(elgg_echo('DatabaseException:InvalidQuery'));
@@ -389,7 +389,7 @@ function get_data_row($query, $callback = "") {
  * @access private
  */
 function elgg_query_runner($query, $callback = null, $single = false) {
-	global $CONFIG, $DB_QUERY_CACHE;
+	global $DB_QUERY_CACHE;
 
 	// Since we want to cache results of running the callback, we need to
 	// need to namespace the query with the callback and single result request.
@@ -454,7 +454,7 @@ function elgg_query_runner($query, $callback = null, $single = false) {
  * @access private
  */
 function insert_data($query) {
-	global $CONFIG, $DB_QUERY_CACHE;
+	global $DB_QUERY_CACHE;
 
 	elgg_log("DB query $query", 'NOTICE');
 	
@@ -486,7 +486,7 @@ function insert_data($query) {
  * @access private
  */
 function update_data($query) {
-	global $CONFIG, $DB_QUERY_CACHE;
+	global $DB_QUERY_CACHE;
 
 	elgg_log("DB query $query", 'NOTICE');
 
@@ -517,7 +517,7 @@ function update_data($query) {
  * @access private
  */
 function delete_data($query) {
-	global $CONFIG, $DB_QUERY_CACHE;
+	global $DB_QUERY_CACHE;
 
 	elgg_log("DB query $query", 'NOTICE');
 
@@ -644,7 +644,7 @@ function run_sql_script($scriptlocation) {
 			$statement = str_replace("prefix_", $CONFIG->dbprefix, $statement);
 			if (!empty($statement)) {
 				try {
-					$result = update_data($statement);
+					update_data($statement);
 				} catch (DatabaseException $e) {
 					$errors[] = $e->getMessage();
 				}
diff --git a/engine/lib/elgglib.php b/engine/lib/elgglib.php
index 6a2ebf97b..4cac79a22 100644
--- a/engine/lib/elgglib.php
+++ b/engine/lib/elgglib.php
@@ -128,8 +128,6 @@ function elgg_load_library($name) {
  * @throws SecurityException
  */
 function forward($location = "", $reason = 'system') {
-	global $CONFIG;
-
 	if (!headers_sent()) {
 		if ($location === REFERER) {
 			$location = $_SERVER['HTTP_REFERER'];
@@ -385,7 +383,7 @@ function elgg_load_external_file($type, $name) {
 		$item->url = '';
 		$item->location = '';
 
-		$priority = $CONFIG->externals[$type]->add($item);
+		$CONFIG->externals[$type]->add($item);
 		$CONFIG->externals_map[$type][$name] = $item;
 	}
 }
@@ -563,7 +561,7 @@ function system_messages($message = null, $register = "success", $count = false)
 			return sizeof($_SESSION['msg'][$register]);
 		} else {
 			$count = 0;
-			foreach ($_SESSION['msg'] as $register => $submessages) {
+			foreach ($_SESSION['msg'] as $submessages) {
 				$count += sizeof($submessages);
 			}
 			return $count;
@@ -1294,8 +1292,6 @@ function elgg_deprecated_notice($msg, $dep_version, $backtrace_level = 1) {
  * @return string The current page URL.
  */
 function current_page_url() {
-	global $CONFIG;
-
 	$url = parse_url(elgg_get_site_url());
 
 	$page = $url['scheme'] . "://";
@@ -1489,8 +1485,6 @@ function elgg_http_add_url_query_elements($url, array $elements) {
  * @since 1.8.0
  */
 function elgg_http_url_is_identical($url1, $url2, $ignore_params = array('offset', 'limit')) {
-	global $CONFIG;
-
 	// if the server portion is missing but it starts with / then add the url in.
 	// @todo use elgg_normalize_url()
 	if (elgg_substr($url1, 0, 1) == '/') {
@@ -1629,7 +1623,7 @@ $sort_type = SORT_LOCALE_STRING) {
 
 	$sort = array();
 
-	foreach ($array as $k => $v) {
+	foreach ($array as $v) {
 		if (isset($v[$element])) {
 			$sort[] = strtolower($v[$element]);
 		} else {
diff --git a/engine/lib/export.php b/engine/lib/export.php
index 1996bc885..ecc894e63 100644
--- a/engine/lib/export.php
+++ b/engine/lib/export.php
@@ -40,8 +40,6 @@ function get_uuid_from_object($object) {
  * @return string
  */
 function guid_to_uuid($guid) {
-	global $CONFIG;
-
 	return elgg_get_site_url()  . "export/opendd/$guid/";
 }
 
@@ -53,8 +51,6 @@ function guid_to_uuid($guid) {
  * @return bool
  */
 function is_uuid_this_domain($uuid) {
-	global $CONFIG;
-
 	if (strpos($uuid, elgg_get_site_url()) === 0) {
 		return true;
 	}
diff --git a/engine/lib/filestore.php b/engine/lib/filestore.php
index 677fac931..a3c7ba439 100644
--- a/engine/lib/filestore.php
+++ b/engine/lib/filestore.php
@@ -308,8 +308,6 @@ function get_image_resize_parameters($width, $height, $options) {
 function file_delete($guid) {
 	if ($file = get_entity($guid)) {
 		if ($file->canEdit()) {
-			$container = get_entity($file->container_guid);
-
 			$thumbnail = $file->thumbnail;
 			$smallthumb = $file->smallthumb;
 			$largethumb = $file->largethumb;
diff --git a/engine/lib/input.php b/engine/lib/input.php
index 2d71fb77e..bbb9ff94d 100644
--- a/engine/lib/input.php
+++ b/engine/lib/input.php
@@ -266,10 +266,8 @@ function input_livesearch_page_handler($page) {
 	}
 
 	if (get_input('match_owner', false)) {
-		$owner_guid = $user->getGUID();
 		$owner_where = 'AND e.owner_guid = ' . $user->getGUID();
 	} else {
-		$owner_guid = null;
 		$owner_where = '';
 	}
 
diff --git a/engine/lib/languages.php b/engine/lib/languages.php
index 11722f744..3c231d964 100644
--- a/engine/lib/languages.php
+++ b/engine/lib/languages.php
@@ -104,8 +104,6 @@ function add_translation($country_code, $language_array) {
  * @return string The language code for the site/user or "en" if not set
  */
 function get_current_language() {
-	global $CONFIG;
-
 	$language = get_language();
 
 	if (!$language) {
diff --git a/engine/lib/metastrings.php b/engine/lib/metastrings.php
index 264d2ba2c..698c8c1a9 100644
--- a/engine/lib/metastrings.php
+++ b/engine/lib/metastrings.php
@@ -520,9 +520,6 @@ function elgg_get_metastring_sql($table, $names = null, $values = null,
 
 	$db_prefix = elgg_get_config('dbprefix');
 
-	// join counter for incremental joins.
-	$i = 1;
-
 	// binary forces byte-to-byte comparision of strings, making
 	// it case- and diacritical-mark- sensitive.
 	// only supported on values.
diff --git a/engine/lib/navigation.php b/engine/lib/navigation.php
index 0e8914bbb..118a7214c 100644
--- a/engine/lib/navigation.php
+++ b/engine/lib/navigation.php
@@ -152,7 +152,7 @@ function elgg_is_menu_item_registered($menu_name, $item_name) {
 		return false;
 	}
 
-	foreach ($CONFIG->menus[$menu_name] as $index => $menu_object) {
+	foreach ($CONFIG->menus[$menu_name] as $menu_object) {
 		/* @var ElggMenuItem $menu_object */
 		if ($menu_object->getName() == $item_name) {
 			return true;
@@ -313,8 +313,8 @@ function elgg_site_menu_setup($hook, $type, $return, $params) {
 	
 	// check if we have anything selected
 	$selected = false;
-	foreach ($return as $section_name => $section) {
-		foreach ($section as $key => $item) {
+	foreach ($return as $section) {
+		foreach ($section as $item) {
 			if ($item->getSelected()) {
 				$selected = true;
 				break 2;
diff --git a/engine/lib/notification.php b/engine/lib/notification.php
index d72b1352a..f0aff84e6 100644
--- a/engine/lib/notification.php
+++ b/engine/lib/notification.php
@@ -86,7 +86,7 @@ function unregister_notification_handler($method) {
  * @throws NotificationException
  */
 function notify_user($to, $from, $subject, $message, array $params = NULL, $methods_override = "") {
-	global $NOTIFICATION_HANDLERS, $CONFIG;
+	global $NOTIFICATION_HANDLERS;
 
 	// Sanitise
 	if (!is_array($to)) {
diff --git a/engine/lib/output.php b/engine/lib/output.php
index fefb94b3e..da8e1ab86 100644
--- a/engine/lib/output.php
+++ b/engine/lib/output.php
@@ -224,7 +224,6 @@ function elgg_normalize_url($url) {
 	$php_5_3_0_to_5_3_2 = version_compare(PHP_VERSION, '5.3.0', '>=') &&
 			version_compare(PHP_VERSION, '5.3.3', '<');
 
-	$validated = false;
 	if ($php_5_2_13_and_below || $php_5_3_0_to_5_3_2) {
 		$tmp_address = str_replace("-", "", $url);
 		$validated = filter_var($tmp_address, FILTER_VALIDATE_URL);
diff --git a/engine/lib/plugins.php b/engine/lib/plugins.php
index d6f03c795..0ea4404f3 100644
--- a/engine/lib/plugins.php
+++ b/engine/lib/plugins.php
@@ -309,8 +309,6 @@ function elgg_is_active_plugin($plugin_id, $site_guid = null) {
  * @access private
  */
 function elgg_load_plugins() {
-	global $CONFIG;
-
 	$plugins_path = elgg_get_plugins_path();
 	$start_flags =	ELGG_PLUGIN_INCLUDE_START
 					| ELGG_PLUGIN_REGISTER_VIEWS
diff --git a/engine/lib/relationships.php b/engine/lib/relationships.php
index 6f18bda93..c1a7cc080 100644
--- a/engine/lib/relationships.php
+++ b/engine/lib/relationships.php
@@ -589,8 +589,6 @@ function import_relationship_plugin_hook($hook, $entity_type, $returnvalue, $par
  * @access private
  */
 function export_relationship_plugin_hook($hook, $entity_type, $returnvalue, $params) {
-	global $CONFIG;
-
 	// Sanity check values
 	if ((!is_array($params)) && (!isset($params['guid']))) {
 		throw new InvalidParameterException(elgg_echo('InvalidParameterException:GUIDNotForExport'));
@@ -626,7 +624,6 @@ function export_relationship_plugin_hook($hook, $entity_type, $returnvalue, $par
 function relationship_notification_hook($event, $type, $object) {
 	/* @var ElggRelationship $object */
 	$user_one = get_entity($object->guid_one);
-	$user_two = get_entity($object->guid_two);
 	/* @var ElggUser $user_one */
 
 	return notify_user($object->guid_two,
diff --git a/engine/lib/river.php b/engine/lib/river.php
index 6274887b5..f2ec1e101 100644
--- a/engine/lib/river.php
+++ b/engine/lib/river.php
@@ -664,10 +664,6 @@ function elgg_river_page_handler($page) {
 	}
 	set_input('page_type', $page_type);
 
-	// content filter code here
-	$entity_type = '';
-	$entity_subtype = '';
-
 	require_once("{$CONFIG->path}pages/river.php");
 	return true;
 }
diff --git a/engine/lib/sessions.php b/engine/lib/sessions.php
index 3dd95aa2f..a34c2045b 100644
--- a/engine/lib/sessions.php
+++ b/engine/lib/sessions.php
@@ -286,8 +286,6 @@ function check_rate_limit_exceeded($user_guid) {
  * @throws LoginException
  */
 function login(ElggUser $user, $persistent = false) {
-	global $CONFIG;
-
 	// User is banned, return false.
 	if ($user->isBanned()) {
 		throw new LoginException(elgg_echo('LoginException:BannedUser'));
@@ -334,8 +332,6 @@ function login(ElggUser $user, $persistent = false) {
  * @return bool
  */
 function logout() {
-	global $CONFIG;
-
 	if (isset($_SESSION['user'])) {
 		if (!elgg_trigger_event('logout', 'user', $_SESSION['user'])) {
 			return false;
@@ -618,8 +614,6 @@ function _elgg_session_destroy($id) {
 		$sess_file = "$sess_save_path/sess_$id";
 		return @unlink($sess_file);
 	}
-
-	return false;
 }
 
 /**
diff --git a/engine/lib/sites.php b/engine/lib/sites.php
index 8ee3213d3..3de0eccc2 100644
--- a/engine/lib/sites.php
+++ b/engine/lib/sites.php
@@ -118,8 +118,6 @@ function create_site_entity($guid, $name, $description, $url) {
  * @return bool
  */
 function add_site_user($site_guid, $user_guid) {
-	global $CONFIG;
-
 	$site_guid = (int)$site_guid;
 	$user_guid = (int)$user_guid;
 
@@ -150,8 +148,6 @@ function remove_site_user($site_guid, $user_guid) {
  * @return mixed
  */
 function add_site_object($site_guid, $object_guid) {
-	global $CONFIG;
-
 	$site_guid = (int)$site_guid;
 	$object_guid = (int)$object_guid;
 
diff --git a/engine/lib/upgrade.php b/engine/lib/upgrade.php
index ae4591b0b..2883dc509 100644
--- a/engine/lib/upgrade.php
+++ b/engine/lib/upgrade.php
@@ -17,8 +17,6 @@
  * @access private
  */
 function upgrade_code($version, $quiet = FALSE) {
-	global $CONFIG;
-
 	$version = (int) $version;
 	$upgrade_path = elgg_get_config('path') . 'engine/lib/upgrades/';
 	$processed_upgrades = elgg_get_processed_upgrades();
@@ -291,7 +289,6 @@ function elgg_upgrade_bootstrap_17_to_18() {
 		'2011010101.php',
 	);
 
-	$upgrades_17 = array();
 	$upgrade_files = elgg_get_upgrade_files();
 	$processed_upgrades = array();
 
diff --git a/engine/lib/users.php b/engine/lib/users.php
index c4e06895d..8e9086f57 100644
--- a/engine/lib/users.php
+++ b/engine/lib/users.php
@@ -343,8 +343,6 @@ function user_add_friend($user_guid, $friend_guid) {
  * @return bool Depending on success
  */
 function user_remove_friend($user_guid, $friend_guid) {
-	global $CONFIG;
-
 	$user_guid = (int) $user_guid;
 	$friend_guid = (int) $friend_guid;
 
@@ -675,8 +673,6 @@ function find_active_users($seconds = 600, $limit = 10, $offset = 0, $count = fa
  * @return bool
  */
 function send_new_password_request($user_guid) {
-	global $CONFIG;
-
 	$user_guid = (int)$user_guid;
 
 	$user = get_entity($user_guid);
@@ -916,9 +912,6 @@ function validate_email_address($address) {
 function register_user($username, $password, $name, $email,
 $allow_multiple_emails = false, $friend_guid = 0, $invitecode = '') {
 
-	// Load the configuration
-	global $CONFIG;
-
 	// no need to trim password.
 	$username = trim($username);
 	$name = trim(strip_tags($name));
@@ -1205,8 +1198,6 @@ function set_last_login($user_guid) {
  * @access private
  */
 function user_create_hook_add_site_relationship($event, $object_type, $object) {
-	global $CONFIG;
-
 	add_entity_relationship($object->getGUID(), 'member_of_site', elgg_get_site_entity()->guid);
 }