code: public static function getRootBackslash($pathname) {
          
          // Remove leading slash if necessary.
          if($pathname[0] == '\\') {
              $pathname = substr($pathname, 1);
          }
  
          // Create array from path
          $arr = explode('\\', $pathname);
          
          // If a pathname was given (as opposed to just a filename like "myFile.php")
          // Return the first part of it. Otherwise just return nothing for root.
          if (count($arr) > 1) {
              return $arr[0];
          }
          return '';
      }
docs: Get the 'models' out of 'models\folder\fileName.php