code: public function actionFix($root = null)
      {
          $files = $this->findFiles($root, false);
  
          $nFilesTotal = 0;
          $nFilesUpdated = 0;
          foreach ($files as $file) {
              $contents = file_get_contents($file);
              $hash = $this->hash($contents);
  
              // fix line endings
              $lines = preg_split('/(\r\n|\n|\r)/', $contents);
  
              if (!$this->skipFrameworkRequirements) {
                  $this->fixFileDoc($lines);
              }
              $this->fixDocBlockIndentation($lines);
              $lines = array_values($this->fixLineSpacing($lines));
  
              $newContent = implode("\n", $lines);
              if ($hash !== $this->hash($newContent)) {
                  file_put_contents($file, $newContent);
                  $nFilesUpdated++;
              }
              $nFilesTotal++;
          }
  
          $this->stdout("\nParsed $nFilesTotal files.\n");
          $this->stdout("Updated $nFilesUpdated files.\n");
      }
docs: Fix some issues with PHPDoc in files.
  
  @param string $root the directory to parse files from. Defaults to YII2_PATH.