18 files changed, 24 insertions, 24 deletions
diff --git a/phpBB/includes/config/config.php b/phpBB/includes/config/config.php
index 12a4a418b2..4b533dd55c 100644
--- a/phpBB/includes/config/config.php
+++ b/phpBB/includes/config/config.php
@@ -109,7 +109,7 @@ class phpbb_config implements ArrayAccess, IteratorAggregate, Countable
 	* @param  String $key       The configuration option's name
 	* @param  bool   $use_cache Whether this variable should be cached or if it
 	*                           changes too frequently to be efficiently cached
-	* @return void
+	* @return null
 	*/
 	public function delete($key, $use_cache = true)
 	{
diff --git a/phpBB/includes/config/db.php b/phpBB/includes/config/db.php
index 993a764a7f..45f9f1cb21 100644
--- a/phpBB/includes/config/db.php
+++ b/phpBB/includes/config/db.php
@@ -96,7 +96,7 @@ class phpbb_config_db extends phpbb_config
 	* @param  String $key       The configuration option's name
 	* @param  bool   $use_cache Whether this variable should be cached or if it
 	*                           changes too frequently to be efficiently cached
-	* @return void
+	* @return null
 	*/
 	public function delete($key, $use_cache = true)
 	{
diff --git a/phpBB/includes/cron/manager.php b/phpBB/includes/cron/manager.php
index ccaa4f3764..84c9650830 100644
--- a/phpBB/includes/cron/manager.php
+++ b/phpBB/includes/cron/manager.php
@@ -54,7 +54,7 @@ class phpbb_cron_manager
 	*
 	* @param array|Traversable $tasks		Array of instances of phpbb_cron_task
 	*
-	* @return void
+	* @return null
 	*/
 	public function load_tasks($tasks)
 	{
diff --git a/phpBB/includes/cron/task/core/prune_all_forums.php b/phpBB/includes/cron/task/core/prune_all_forums.php
index 252e16e57d..ee0b5f7626 100644
--- a/phpBB/includes/cron/task/core/prune_all_forums.php
+++ b/phpBB/includes/cron/task/core/prune_all_forums.php
@@ -50,7 +50,7 @@ class phpbb_cron_task_core_prune_all_forums extends phpbb_cron_task_base
 	/**
 	* Runs this cron task.
 	*
-	* @return void
+	* @return null
 	*/
 	public function run()
 	{
diff --git a/phpBB/includes/cron/task/core/prune_forum.php b/phpBB/includes/cron/task/core/prune_forum.php
index 41d60af921..fa7a761d88 100644
--- a/phpBB/includes/cron/task/core/prune_forum.php
+++ b/phpBB/includes/cron/task/core/prune_forum.php
@@ -70,7 +70,7 @@ class phpbb_cron_task_core_prune_forum extends phpbb_cron_task_base implements p
 	/**
 	* Runs this cron task.
 	*
-	* @return void
+	* @return null
 	*/
 	public function run()
 	{
@@ -138,7 +138,7 @@ class phpbb_cron_task_core_prune_forum extends phpbb_cron_task_base implements p
 	*
 	* @param phpbb_request_interface $request Request object.
 	*
-	* @return void
+	* @return null
 	*/
 	public function parse_parameters(phpbb_request_interface $request)
 	{
diff --git a/phpBB/includes/cron/task/core/queue.php b/phpBB/includes/cron/task/core/queue.php
index c765660906..732f9c6bea 100644
--- a/phpBB/includes/cron/task/core/queue.php
+++ b/phpBB/includes/cron/task/core/queue.php
@@ -43,7 +43,7 @@ class phpbb_cron_task_core_queue extends phpbb_cron_task_base
 	/**
 	* Runs this cron task.
 	*
-	* @return void
+	* @return null
 	*/
 	public function run()
 	{
diff --git a/phpBB/includes/cron/task/core/tidy_cache.php b/phpBB/includes/cron/task/core/tidy_cache.php
index 6017eea561..16a45dae7c 100644
--- a/phpBB/includes/cron/task/core/tidy_cache.php
+++ b/phpBB/includes/cron/task/core/tidy_cache.php
@@ -40,7 +40,7 @@ class phpbb_cron_task_core_tidy_cache extends phpbb_cron_task_base
 	/**
 	* Runs this cron task.
 	*
-	* @return void
+	* @return null
 	*/
 	public function run()
 	{
diff --git a/phpBB/includes/cron/task/core/tidy_database.php b/phpBB/includes/cron/task/core/tidy_database.php
index 1d256f964f..b882e7b500 100644
--- a/phpBB/includes/cron/task/core/tidy_database.php
+++ b/phpBB/includes/cron/task/core/tidy_database.php
@@ -43,7 +43,7 @@ class phpbb_cron_task_core_tidy_database extends phpbb_cron_task_base
 	/**
 	* Runs this cron task.
 	*
-	* @return void
+	* @return null
 	*/
 	public function run()
 	{
diff --git a/phpBB/includes/cron/task/core/tidy_search.php b/phpBB/includes/cron/task/core/tidy_search.php
index 2e5f3d79d5..fdbe31346e 100644
--- a/phpBB/includes/cron/task/core/tidy_search.php
+++ b/phpBB/includes/cron/task/core/tidy_search.php
@@ -54,7 +54,7 @@ class phpbb_cron_task_core_tidy_search extends phpbb_cron_task_base
 	/**
 	* Runs this cron task.
 	*
-	* @return void
+	* @return null
 	*/
 	public function run()
 	{
diff --git a/phpBB/includes/cron/task/core/tidy_sessions.php b/phpBB/includes/cron/task/core/tidy_sessions.php
index 13531aa30b..95f55235c9 100644
--- a/phpBB/includes/cron/task/core/tidy_sessions.php
+++ b/phpBB/includes/cron/task/core/tidy_sessions.php
@@ -40,7 +40,7 @@ class phpbb_cron_task_core_tidy_sessions extends phpbb_cron_task_base
 	/**
 	* Runs this cron task.
 	*
-	* @return void
+	* @return null
 	*/
 	public function run()
 	{
diff --git a/phpBB/includes/cron/task/core/tidy_warnings.php b/phpBB/includes/cron/task/core/tidy_warnings.php
index 8dd0674fe5..2a7798e56e 100644
--- a/phpBB/includes/cron/task/core/tidy_warnings.php
+++ b/phpBB/includes/cron/task/core/tidy_warnings.php
@@ -45,7 +45,7 @@ class phpbb_cron_task_core_tidy_warnings extends phpbb_cron_task_base
 	/**
 	* Runs this cron task.
 	*
-	* @return void
+	* @return null
 	*/
 	public function run()
 	{
diff --git a/phpBB/includes/cron/task/parametrized.php b/phpBB/includes/cron/task/parametrized.php
index 0714b2e701..5f0e46eafc 100644
--- a/phpBB/includes/cron/task/parametrized.php
+++ b/phpBB/includes/cron/task/parametrized.php
@@ -46,7 +46,7 @@ interface phpbb_cron_task_parametrized extends phpbb_cron_task
 	*
 	* @param phpbb_request_interface $request Request object.
 	*
-	* @return void
+	* @return null
 	*/
 	public function parse_parameters(phpbb_request_interface $request);
 }
diff --git a/phpBB/includes/cron/task/task.php b/phpBB/includes/cron/task/task.php
index 7b08fed413..2d585df96d 100644
--- a/phpBB/includes/cron/task/task.php
+++ b/phpBB/includes/cron/task/task.php
@@ -31,7 +31,7 @@ interface phpbb_cron_task
 	/**
 	* Runs this cron task.
 	*
-	* @return void
+	* @return null
 	*/
 	public function run();
 
diff --git a/phpBB/includes/functions_download.php b/phpBB/includes/functions_download.php
index b6371dbecc..fc6f1cc762 100644
--- a/phpBB/includes/functions_download.php
+++ b/phpBB/includes/functions_download.php
@@ -433,7 +433,7 @@ function set_modified_headers($stamp, $browser)
 *
 * @param bool $exit		Whether to die or not.
 *
-* @return void
+* @return null
 */
 function file_gc($exit = true)
 {
diff --git a/phpBB/includes/group_positions.php b/phpBB/includes/group_positions.php
index 74de3516cb..60352ed97d 100644
--- a/phpBB/includes/group_positions.php
+++ b/phpBB/includes/group_positions.php
@@ -104,7 +104,7 @@ class phpbb_group_positions
 	* Addes a group by group_id
 	*
 	* @param	int		$group_id	group_id of the group to be added
-	* @return	void
+	* @return	null
 	*/
 	public function add_group($group_id)
 	{
@@ -128,7 +128,7 @@ class phpbb_group_positions
 	*
 	* @param	int		$group_id		group_id of the group to be deleted
 	* @param	bool	$skip_group		Skip setting the group to GROUP_DISABLED, to save the query, when you need to update it anyway.
-	* @return	void
+	* @return	null
 	*/
 	public function delete_group($group_id, $skip_group = false)
 	{
@@ -159,7 +159,7 @@ class phpbb_group_positions
 	* Moves a group up by group_id
 	*
 	* @param	int		$group_id	group_id of the group to be moved
-	* @return	void
+	* @return	null
 	*/
 	public function move_up($group_id)
 	{
@@ -170,7 +170,7 @@ class phpbb_group_positions
 	* Moves a group down by group_id
 	*
 	* @param	int		$group_id	group_id of the group to be moved
-	* @return	void
+	* @return	null
 	*/
 	public function move_down($group_id)
 	{
@@ -184,7 +184,7 @@ class phpbb_group_positions
 	* @param	int		$delta		number of steps:
 	*								- positive = move up
 	*								- negative = move down
-	* @return	void
+	* @return	null
 	*/
 	public function move($group_id, $delta)
 	{
diff --git a/phpBB/includes/lock/db.php b/phpBB/includes/lock/db.php
index fa559d6887..6e94dd5a85 100644
--- a/phpBB/includes/lock/db.php
+++ b/phpBB/includes/lock/db.php
@@ -125,7 +125,7 @@ class phpbb_lock_db
 	* Note: Attempting to release a lock that is already released,
 	* that is, calling release() multiple times, is harmless.
 	*
-	* @return void
+	* @return null
 	*/
 	public function release()
 	{
diff --git a/phpBB/includes/style/resource_locator.php b/phpBB/includes/style/resource_locator.php
index 04beddb434..4cf767c062 100644
--- a/phpBB/includes/style/resource_locator.php
+++ b/phpBB/includes/style/resource_locator.php
@@ -110,7 +110,7 @@ class phpbb_style_resource_locator implements phpbb_template_locator
 	* Typically it is one directory level deep, e.g. "template/".
 	*
 	* @param string $template_path Relative path to templates directory within style directories
-	* @return void
+	* @return null
 	*/
 	public function set_template_path($template_path)
 	{
@@ -121,7 +121,7 @@ class phpbb_style_resource_locator implements phpbb_template_locator
 	* Sets the location of templates directory within style directories
 	* to the default, which is "template/".
 	*
-	* @return void
+	* @return null
 	*/
 	public function set_default_template_path()
 	{
diff --git a/phpBB/includes/template/compile.php b/phpBB/includes/template/compile.php
index 82b301c1a2..d0b3d0f115 100644
--- a/phpBB/includes/template/compile.php
+++ b/phpBB/includes/template/compile.php
@@ -118,7 +118,7 @@ class phpbb_template_compile
 	*
 	* @param resource $source_stream Source stream
 	* @param resource $dest_stream Destination stream
-	* @return void
+	* @return null
 	*/
 	private function compile_stream_to_stream($source_stream, $dest_stream)
 	{