Added error logging at `yii\caching\FileCache::gcRecursive()`

framework/CHANGELOG.md

@@ -123,6 +123,7 @@ Yii Framework 2 Change Log
 - Enh #3380: Allow `value` in `defaultValueValidator` to be a closure (Alex-Code)
 - Enh #3384: Added callback-style transactions (leandrogehlen, Ragazzo, samdark)
 - Enh #3399, #3241: Added support for MS SQL Server older than 2012 (fourteenmeister, samdark)
+- Enh #3459: Added logging of errors, which may occur at `yii\caching\FileCache::gc()` (klimov-paul)
 - Enh #3472: Added configurable option to encode spaces in dropDownLists and listBoxes (kartik-v)
 - Enh #3518: `yii\helpers\Html::encode()` now replaces invalid code sequences with "�" (DaSourcerer)
 - Enh #3520: Added `unlinkAll()`-method to active record to remove all records of a model relation (NmDimas, samdark, cebe)

framework/caching/FileCache.php

@@ -240,10 +240,16 @@ class FileCache extends Cache
                 if (is_dir($fullPath)) {
                     $this->gcRecursive($fullPath, $expiredOnly);
                     if (!$expiredOnly) {
-                        @rmdir($fullPath);
+                        if (!@rmdir($fullPath)) {
+                            $error = error_get_last();
+                            Yii::warning("Unable to remove directory '{$fullPath}': {$error['message']}", __METHOD__);
+                        }
                     }
                 } elseif (!$expiredOnly || $expiredOnly && @filemtime($fullPath) < time()) {
-                    @unlink($fullPath);
+                    if (!@unlink($fullPath)) {
+                        $error = error_get_last();
+                        Yii::warning("Unable to remove file '{$fullPath}': {$error['message']}", __METHOD__);
+                    }
                 }
             }
             closedir($handle);