original_string: public function move($filename, $pathTo, $pathFrom = null)
      {
          if ($pathFrom==null) {
              $pathFrom=$this->_filePath;
          }
          if (file_exists($pathFrom."/".$filename)) {
              $this->createDir($pathTo);
              return rename($pathFrom."/".$filename, $pathTo."/".$filename);
          } else {
              return null;
          }
      }
code: public function move($filename, $pathTo, $pathFrom = null)
      {
          if ($pathFrom==null) {
              $pathFrom=$this->_filePath;
          }
          if (file_exists($pathFrom."/".$filename)) {
              $this->createDir($pathTo);
              return rename($pathFrom."/".$filename, $pathTo."/".$filename);
          } else {
              return null;
          }
      }
code_tokens: public function move ( $ filename , $ pathTo , $ pathFrom = null ) { if ( $ pathFrom == null ) { $ pathFrom = $ this -> _filePath ; } if ( file_exists ( $ pathFrom . "/" . $ filename ) ) { $ this -> createDir ( $ pathTo ) ; return rename ( $ pathFrom . "/" . $ filename , $ pathTo . "/" . $ filename ) ; } else { return null ; } }
docstring: Move a file
  
  @param string $filename
  @param string $pathTo
  @param string $pathToFrom
  @return bool
docstring_tokens: Move a file