public function close() {
        if (!empty($this->_fp)) {
            fclose($this->_fp);
            $this->_fp = null;
        }
    }
public function close() {
        if (!empty($this->_fp)) {
            fclose($this->_fp);
            $this->_fp = null;
        }
    }
public function close ( ) { if ( ! empty ( $ this -> _fp ) ) { fclose ( $ this -> _fp ) ; $ this -> _fp = null ; } }
Release iteration related resources

@return void
Release iteration related resources