src/Csv.php
protected function _check_data($file = null) {
        if (empty($this->file_data)) {
            if (is_null($file)) {
                $file = $this->file;
            }

            return $this->load_data($file);
        }

        return true;
    }
protected function _check_data($file = null) {
        if (empty($this->file_data)) {
            if (is_null($file)) {
                $file = $this->file;
            }

            return $this->load_data($file);
        }

        return true;
    }
protected function _check_data ( $ file = null ) { if ( empty ( $ this -> file_data ) ) { if ( is_null ( $ file ) ) { $ file = $ this -> file ; } return $ this -> load_data ( $ file ) ; } return true ; }
Check file data

@param  string|null $file local filename

@return bool
Check file data