diff --git a/src/ChangeTask.php b/src/ChangeTask.php
index 78a875adf26..d52ade6e5b4 100644
--- a/src/ChangeTask.php
+++ b/src/ChangeTask.php
@@ -44,7 +44,7 @@ public static function getTypeName($nb = 0)
     /**
      * Populate the planning with planned ticket tasks
      *
-     * @param $options array of possible options:
+     * @param array $options array of possible options:
      *    - who ID of the user (0 = undefined)
      *    - whogroup ID of the group of users (0 = undefined)
      *    - begin Date
@@ -76,7 +76,7 @@ public static function displayPlanningItem(array $val, $who, $type = "", $comple
     /**
      * Populate the planning with not planned ticket tasks
      *
-     * @param $options array of possible options:
+     * @param array $options array of possible options:
      *    - who ID of the user (0 = undefined)
      *    - whogroup ID of the group of users (0 = undefined)
      *    - begin Date
diff --git a/src/Change_Problem.php b/src/Change_Problem.php
index af01758ef7b..5afb95bc5b7 100644
--- a/src/Change_Problem.php
+++ b/src/Change_Problem.php
@@ -102,6 +102,7 @@ public static function displayTabContentForItem(CommonGLPI $item, $tabnum = 1, $
      * Show tickets for a problem
      *
      * @param Problem $problem
+     * @return void
      **/
     public static function showForProblem(Problem $problem)
     {
@@ -109,7 +110,7 @@ public static function showForProblem(Problem $problem)
 
         $ID = $problem->getField('id');
         if (!$problem->can($ID, READ)) {
-            return false;
+            return;
         }
 
         $canedit = $problem->canEdit($ID);
@@ -194,6 +195,7 @@ public static function showForProblem(Problem $problem)
      * Show problems for a change
      *
      * @param Change $change object
+     * @return void
      **/
     public static function showForChange(Change $change)
     {
@@ -201,7 +203,7 @@ public static function showForChange(Change $change)
 
         $ID = $change->getField('id');
         if (!$change->can($ID, READ)) {
-            return false;
+            return;
         }
 
         $canedit = $change->canEdit($ID);
diff --git a/src/Change_Ticket.php b/src/Change_Ticket.php
index 2920ed246c8..56031d12f55 100644
--- a/src/Change_Ticket.php
+++ b/src/Change_Ticket.php
@@ -206,6 +206,7 @@ public static function processMassiveActionsForOneItemtype(
      * Show tickets for a change
      *
      * @param Change $change
+     * @return void
      **/
     public static function showForChange(Change $change)
     {
@@ -213,7 +214,7 @@ public static function showForChange(Change $change)
 
         $ID = $change->getField('id');
         if (!$change->can($ID, READ)) {
-            return false;
+            return;
         }
 
         $canedit = $change->canEdit($ID);
@@ -307,6 +308,7 @@ public static function showForChange(Change $change)
      * Show changes for a ticket
      *
      * @param Ticket $ticket object
+     * @return void
      **/
     public static function showForTicket(Ticket $ticket)
     {
@@ -314,7 +316,7 @@ public static function showForTicket(Ticket $ticket)
 
         $ID = $ticket->getField('id');
         if (!$ticket->can($ID, READ)) {
-            return false;
+            return;
         }
 
         $canedit = $ticket->canEdit($ID);
diff --git a/src/CommonITILRecurrent.php b/src/CommonITILRecurrent.php
index e321b7c244b..a652c1d61a3 100644
--- a/src/CommonITILRecurrent.php
+++ b/src/CommonITILRecurrent.php
@@ -44,6 +44,7 @@
  */
 abstract class CommonITILRecurrent extends CommonDropdown
 {
+    /** @use Clonable<static> */
     use Clonable;
 
     /**
diff --git a/src/ProblemTask.php b/src/ProblemTask.php
index 6735fbaba25..6235067511a 100644
--- a/src/ProblemTask.php
+++ b/src/ProblemTask.php
@@ -43,7 +43,7 @@ public static function getTypeName($nb = 0)
     /**
      * Populate the planning with planned problem tasks
      *
-     * @param $options  array of possible options:
+     * @param array $options  array of possible options:
      *    - who         ID of the user (0 = undefined)
      *    - whogroup    ID of the group of users (0 = undefined)
      *    - begin Date
@@ -75,7 +75,7 @@ public static function displayPlanningItem(array $val, $who, $type = "", $comple
     /**
      * Populate the planning with not planned problem tasks
      *
-     * @param $options  array of possible options:
+     * @param array $options  array of possible options:
      *    - who         ID of the user (0 = undefined)
      *    - whogroup    ID of the group of users (0 = undefined)
      *    - begin Date
diff --git a/src/Problem_Ticket.php b/src/Problem_Ticket.php
index d666b61d3c2..7742c37b34b 100644
--- a/src/Problem_Ticket.php
+++ b/src/Problem_Ticket.php
@@ -191,13 +191,14 @@ public static function processMassiveActionsForOneItemtype(
      * Show tickets for a problem
      *
      * @param Problem $problem
+     * @return void
      **/
     public static function showForProblem(Problem $problem)
     {
         $ID = $problem->getField('id');
 
         if (!static::canView() || !$problem->can($ID, READ)) {
-            return false;
+            return;
         }
 
         $canedit = $problem->canEdit($ID);
@@ -266,6 +267,7 @@ public static function showForProblem(Problem $problem)
      * Show problems for a ticket
      *
      * @param Ticket $ticket object
+     * @return void
      **/
     public static function showForTicket(Ticket $ticket)
     {
@@ -273,7 +275,7 @@ public static function showForTicket(Ticket $ticket)
         $ID = $ticket->getField('id');
 
         if (!static::canView() || !$ticket->can($ID, READ)) {
-            return false;
+            return;
         }
 
         $canedit = $ticket->can($ID, UPDATE);
diff --git a/src/TicketTask.php b/src/TicketTask.php
index 353df8c787a..6691d62fbc7 100644
--- a/src/TicketTask.php
+++ b/src/TicketTask.php
@@ -43,7 +43,7 @@ public static function getTypeName($nb = 0)
     /**
      * Populate the planning with planned ticket tasks
      *
-     * @param $options   array of possible options:
+     * @param array $options   array of possible options:
      *    - who          ID of the user (0 = undefined)
      *    - whogroup     ID of the group of users (0 = undefined)
      *    - begin        Date
@@ -60,7 +60,7 @@ public static function populatePlanning($options = []): array
     /**
      * Populate the planning with planned ticket tasks
      *
-     * @param $options   array of possible options:
+     * @param array $options   array of possible options:
      *    - who          ID of the user (0 = undefined)
      *    - whogroup     ID of the group of users (0 = undefined)
      *    - begin        Date