Minor - Avoid warning when no extra field

main/inc/lib/dashboard.lib.php

@@ -162,6 +162,7 @@ class DashboardManager
             // clean from extra user data
             $field_variable = 'dashboard';
             $extra_user_data = UserManager::get_extra_user_data_by_field_variable($field_variable);
+            if (!empty($extra_user_data) && count($extra_user_data) > 0) {
                 foreach ($extra_user_data as $key => $user_data) {
                     $user_id = $key;
                     $user_block_data = self::get_user_block_data($user_id);
@@ -185,7 +186,7 @@ class DashboardManager
                     // update extra user blocks data
                     self::store_user_blocks($user_id, $user_blocks_id, $columns);
                 }
-
+            }
             // clean from block data
             if (!empty($not_selected_blocks_id)) {
                 $sql_check = "SELECT id FROM $tbl_block WHERE id IN(".implode(',',$not_selected_blocks_id).")";
@@ -197,6 +198,7 @@ class DashboardManager
             }
 
             // store selected plugins
+            if (!empty($selected_plugins) && count($selected_plugins) > 0) {
                 foreach ($selected_plugins as $testplugin) {
                     $selected_path = Database::escape_string($testplugin);
 
@@ -210,7 +212,7 @@ class DashboardManager
                         $affected_rows = Database::affected_rows($result);
                     } else {
                         // insert
-                    $plugin_info_file = $dashboard_pluginpath.$testplugin."/$testplugin.info";
+                        $plugin_info_file = $dashboard_pluginpath . $testplugin . "/$testplugin.info";
                         $plugin_info = array();
                         if (file_exists($plugin_info_file)) {
                             $plugin_info = parse_info_file($plugin_info_file);
@@ -242,6 +244,7 @@ class DashboardManager
                     }
                 }
             }
+        }
 
         return $affected_rows;
     }