Minor - format code, check variable

main/admin/user_edit.php

@@ -69,8 +69,8 @@ $htmlHeadXtra[] = api_get_css_asset('cropper/dist/cropper.min.css');
 $htmlHeadXtra[] = api_get_asset('cropper/dist/cropper.min.js');
 $tool_name = get_lang('ModifyUserInfo');
 
-$interbreadcrumb[] = ['url' => 'index.php', "name" => get_lang('PlatformAdmin')];
-$interbreadcrumb[] = ['url' => "user_list.php", "name" => get_lang('UserList')];
+$interbreadcrumb[] = ['url' => 'index.php', 'name' => get_lang('PlatformAdmin')];
+$interbreadcrumb[] = ['url' => 'user_list.php', 'name' => get_lang('UserList')];
 
 $table_user = Database::get_main_table(TABLE_MAIN_USER);
 $table_admin = Database::get_main_table(TABLE_MAIN_ADMIN);

main/forum/forumfunction.inc.php

@@ -3287,17 +3287,17 @@ function show_add_post_form($current_forum, $action, $form_values = '', $showPre
         $hide = api_get_configuration_value('hide_forum_post_revision_language');
         $form->addHidden('give_revision', 1);
         if ($hide === false) {
-        $extraField = new ExtraField('forum_post');
+            $extraField = new ExtraField('forum_post');
             $extraField->addElements(
-            $form,
-            null,
-            [], //exclude
-            false, // filter
-            false, // tag as select
-            ['revision_language'], //show only fields
-            [], // order fields
-            [] // extra data
-        );
+                $form,
+                null,
+                [], //exclude
+                false, // filter
+                false, // tag as select
+                ['revision_language'], //show only fields
+                [], // order fields
+                [] // extra data
+            );
         } else {
             $form->addHidden('extra_revision_language', 1);
         }

main/inc/lib/api.lib.php

@@ -9457,16 +9457,14 @@ function api_get_language_list_for_flag()
 }
 
 /**
- *
  * @return string
- *
  */
 function api_get_language_translate_html()
 {
     $translate = api_get_configuration_value('translate_html');
 
     if (!$translate) {
-       return '';
+        return '';
     }
 
     $languageList = api_get_languages();

main/inc/lib/document.lib.php

@@ -726,6 +726,10 @@ class DocumentManager
         $getInvisibleList = false,
         $path = ''
     ) {
+        if (empty($_course)) {
+            return [];
+        }
+
         $TABLE_ITEMPROPERTY = Database::get_course_table(TABLE_ITEM_PROPERTY);
         $TABLE_DOCUMENT = Database::get_course_table(TABLE_DOCUMENT);
         $groupIid = (int) $groupIid;