Fixes #16752: Fix rotating files under Windows

framework/CHANGELOG.md

@@ -4,6 +4,7 @@ Yii Framework 2 Change Log
 2.0.16 under development
 ------------------------
 
+- Bug #16752: Fix rotating files under Windows (samdark, nadirvishun)
 - Bug #16716: The ability to filter by pressing the Enter key when the option `$filterOnFocusOut` off (s1lver)
 - Bug #15791: Added a warning when the form names conflict (s1lver, rustamwin)
 - Enh #16151: `ActiveQuery::getTableNameAndAlias()` is now protected (s1lver)

framework/log/FileTarget.php

@@ -115,9 +115,9 @@ class FileTarget extends Target
             clearstatcache();
         }
         if ($this->enableRotation && @filesize($this->logFile) > $this->maxFileSize * 1024) {
-            $this->rotateFiles();
             @flock($fp, LOCK_UN);
             @fclose($fp);
+            $this->rotateFiles();
             $writeResult = @file_put_contents($this->logFile, $text, FILE_APPEND | LOCK_EX);
             if ($writeResult === false) {
                 $error = error_get_last();