Minor - fixing PHP warning.

main/document/document.php

@@ -1298,8 +1298,7 @@ if ($is_allowed_to_edit ||
 /* 	VISIBILITY COMMANDS */
 if ($is_allowed_to_edit) {
     if ((isset($_GET['set_invisible']) && !empty($_GET['set_invisible'])) ||
-        (isset($_GET['set_visible']) && !empty($_GET['set_visible'])) &&
-        $_GET['set_visible'] != '*' && $_GET['set_invisible'] != '*'
+        (isset($_GET['set_visible']) && !empty($_GET['set_visible']))
     ) {
         // Make visible or invisible?
         if (isset($_GET['set_visible'])) {
@@ -1334,7 +1333,6 @@ if ($is_allowed_to_edit) {
             null,
             $sessionId)
         ) {
-            //don't use ViMod because firt is load ViMdod (Gradebook). VisibilityChanged (trad4all)
             $message = Display::return_message(get_lang('VisibilityChanged'), 'confirmation');
         } else {
             $message = Display::return_message(get_lang('ViModProb'), 'error');

main/inc/lib/main_api.lib.php

@@ -3493,7 +3493,7 @@ function api_item_property_update(
                         WHERE
                             c_id = $course_id AND
                             tool = '$tool' AND
-                            ref='$item_id' AND
+                            ref = '$item_id' AND
                             id_session = '$session_id'";
                 $rs = Database::query($sql);
                 if (Database::num_rows($rs) > 0) {
@@ -3501,7 +3501,7 @@ function api_item_property_update(
                             SET
                                 lastedit_type = '".str_replace('_', '', ucwords($tool))."Invisible',
                                 lastedit_date = '$time',
-                                lastedit_user_id='$user_id',
+                                lastedit_user_id = '$user_id',
                                 visibility = '$visibility',
                                 id_session = '$session_id' $set_type
                             WHERE $filter";