diff --git a/main/admin/careers.php b/main/admin/careers.php
index cae9ba108c..889486294a 100755
--- a/main/admin/careers.php
+++ b/main/admin/careers.php
@@ -204,7 +204,7 @@ switch ($action) {
         api_protect_admin_script();
         // Action handling: delete
         if ($check) {
-            $childCareers = $career->get_all(['parent_id' =>  $_GET['id']]);
+            $childCareers = $career->get_all(['parent_id' => $_GET['id']]);
             if (!empty($childCareers)) {
                 Display::addFlash(
                     Display::return_message(get_lang('CareerCannotBeDeletedAsItHasChildren'), 'warning')
diff --git a/main/inc/lib/career.lib.php b/main/inc/lib/career.lib.php
index cf8821d198..e0f3b3d5a7 100755
--- a/main/inc/lib/career.lib.php
+++ b/main/inc/lib/career.lib.php
@@ -101,14 +101,13 @@ class Career extends Model
     }
 
     /**
-     * Order the careers by its hierarchy
+     * Order the careers by its hierarchy.
      *
      * @param $careers
-     * @return array
      */
     public function orderCareersByHierarchy($careers): array
     {
-        $orderedCareers = array();
+        $orderedCareers = [];
         foreach ($careers as &$career) {
             if (is_null($career['parent_id'])) {
                 $orderedCareers[] = &$career;
@@ -119,7 +118,7 @@ class Career extends Model
                     break;
                 } else {
                     if (!isset($careers[$pid]['children'])) {
-                        $careers[$pid]['children'] = array();
+                        $careers[$pid]['children'] = [];
                     }
                     $careers[$pid]['children'][] = &$career;
                 }
@@ -128,6 +127,7 @@ class Career extends Model
 
         return $orderedCareers;
     }
+
     /**
      * Update all promotion status by career.
      *
@@ -180,17 +180,16 @@ class Career extends Model
     }
 
     /**
-     * Return the name of the careers that are parents of others
+     * Return the name of the careers that are parents of others.
      */
     public function getHierarchies(): array
     {
         $return = [];
-        $result = Database::select('name, id', $this->table, [ 'order' => 'id ASC']);
+        $result = Database::select('name, id', $this->table, ['order' => 'id ASC']);
         foreach ($result as $item) {
             $return[$item['id']] = $item['name'];
         }
         array_unshift($return, '--');
-
         return $return;
 
     }
diff --git a/src/Chamilo/CoreBundle/Entity/Career.php b/src/Chamilo/CoreBundle/Entity/Career.php
index a74e17fbe1..e3b340bf7a 100644
--- a/src/Chamilo/CoreBundle/Entity/Career.php
+++ b/src/Chamilo/CoreBundle/Entity/Career.php
@@ -58,7 +58,7 @@ class Career
     protected $updatedAt;
 
     /**
-     * var int
+     * var int.
      *
      * ORM\Column(name="parent_id", type="integer", nullable=true)
      */