diff --git a/main/admin/legal_add.php b/main/admin/legal_add.php
index 34e847bc64..cb58019888 100755
--- a/main/admin/legal_add.php
+++ b/main/admin/legal_add.php
@@ -41,7 +41,7 @@ foreach ($types as $variable => $name) {
         'changeable' => true,
         'filter' => true,
         'visible_to_self' => true,
-        'visible_to_others' => true
+        'visible_to_others' => true,
     ];
     $extraField->save($params);
 }
@@ -162,10 +162,8 @@ if (isset($_POST['language'])) {
         [],
         false,
         true
-
     );
 
-
     $jqueryReady = $returnParams['jquery_ready_content'];
 
     $form->addElement('textarea', 'changes', get_lang('ExplainChanges'), ['width' => '20']);
diff --git a/main/auth/courses_controller.php b/main/auth/courses_controller.php
index f64cf3d01a..df517fb00e 100755
--- a/main/auth/courses_controller.php
+++ b/main/auth/courses_controller.php
@@ -111,7 +111,6 @@ class CoursesController
         //$browse_course_categories = CoursesAndSessionsCatalog::getCourseCategories();
         $listCategories = CoursesAndSessionsCatalog::getCourseCategoriesTree();
 
-
         $data['countCoursesInCategory'] = CourseCategory::countCoursesInCategory($category_code);
         if ($action === 'display_random_courses') {
             // Random value is used instead limit filter
@@ -122,7 +121,6 @@ class CoursesController
 
             $data['countCoursesInCategory'] = count($data['browse_courses_in_category']);
         } else {
-
             if (!isset($category_code)) {
                 $category_code = $listCategories['ALL']['code']; // by default first category
             }
diff --git a/main/inc/lib/CoursesAndSessionsCatalog.class.php b/main/inc/lib/CoursesAndSessionsCatalog.class.php
index 409a0cf3f9..55a31ed352 100644
--- a/main/inc/lib/CoursesAndSessionsCatalog.class.php
+++ b/main/inc/lib/CoursesAndSessionsCatalog.class.php
@@ -174,7 +174,7 @@ class CoursesAndSessionsCatalog
             'parent_id' => null,
             'tree_pos' => 0,
             'number_courses' => $countCourses,
-            'level' => 0
+            'level' => 0,
         ];
 
         $allCategories = CourseCategory::getAllCategories();
@@ -205,7 +205,7 @@ class CoursesAndSessionsCatalog
             'auth_course_child' => true,
             'auth_cat_child' => true,
             'number_courses' => $count_courses,
-            'level' => 0
+            'level' => 0,
         ];
 
         $result = array_merge($list, $categories);
@@ -213,7 +213,6 @@ class CoursesAndSessionsCatalog
         return $result;
     }
 
-
     /**
      * @return array
      */
@@ -382,7 +381,6 @@ class CoursesAndSessionsCatalog
                           $visibilityCondition
                     ORDER BY title $limitFilter ";
             } else {
-
                 $sql = "SELECT *, id as real_id FROM $tbl_course course
                         WHERE
                             $conditionCode 
@@ -694,9 +692,11 @@ class CoursesAndSessionsCatalog
     }
 
     /**
-     * Build a recursive tree of course categories
+     * Build a recursive tree of course categories.
+     *
      * @param $categories
      * @param $parentId
+     *
      * @return array
      */
     public static function buildCourseCategoryTree($categories, $parentId = 0, $level = 0)
@@ -731,8 +731,10 @@ class CoursesAndSessionsCatalog
     }
 
     /**
-     * List Code Search Category
+     * List Code Search Category.
+     *
      * @param $code
+     *
      * @return array
      */
     public static function childrenCategories($code)
diff --git a/main/inc/lib/extra_field.lib.php b/main/inc/lib/extra_field.lib.php
index 3fb8d774d2..a638e1b41d 100755
--- a/main/inc/lib/extra_field.lib.php
+++ b/main/inc/lib/extra_field.lib.php
@@ -51,7 +51,7 @@ class ExtraField extends Model
         'extra_field_type',
         //Enable this when field_loggeable is introduced as a table field (2.0)
         //'field_loggeable',
-        'created_at'
+        'created_at',
     ];
 
     public $ops = [
@@ -1107,7 +1107,7 @@ class ExtraField extends Model
                 $translatedDisplayText = get_lang($field_details['display_text'], true);
                 $translatedDisplayHelpText = '';
                 if ($help) {
-                    $translatedDisplayHelpText .= get_lang($field_details['display_text'] . 'Help');
+                    $translatedDisplayHelpText .= get_lang($field_details['display_text'].'Help');
                 }
                 $label = [$translatedDisplayText, $translatedDisplayHelpText];
                 if (!empty($translatedDisplayText)) {
@@ -1148,7 +1148,6 @@ class ExtraField extends Model
                                 'Width' => '100%',
                                 'Height' => '130',
                                 'id' => 'extra_'.$field_details['variable'],
-
                             ]
                         );
                         $form->applyFilter('extra_'.$field_details['variable'], 'stripslashes');