php drupal 读日期/百分数格式问题/excel_import解析

excel_import（）解析

缺陷一：

drupal 利用 PHPExcel_IOFactory 对象封装了一个excel_import的方法，但是这个方法有个漏洞，就是设置了  setReadDataOnly 模式。

开启这个模式有什么优势我不知道，但是这个模式的作用是丢掉了读取excel中每个cell的的formatCode，并统一将他们的formatCode设置为general。

这样做的结果是，某些特殊的格式在倒入数据库中得不到正确的格式/值。例如2019-03-06，得到的结果是43530

缺陷二：

没有转换格式的操作。

这是缺陷一带来的必然结果，因为每个cell的formatCode都是general了，还换啥格式？

解决方法（我修改了一下excel_import方法）：

思路很简单。

一：拿掉setReadDataOnly模式。

二：增加转换格式操作。

function phpexcel_import_change_format($path, $keyed_by_headers = TRUE, $keyed_by_worksheet = FALSE) {
    if (is_readable($path)) {
        $library = libraries_load('PHPExcel');

        if (!empty($library['loaded'])) {
            // Determine caching method.
            list($cache_method, $cache_settings) = _phpexcel_get_cache_settings();

            // Is it available ? If not, return an error.
            if (empty($cache_method)) {
                return PHPEXCEL_CACHING_METHOD_UNAVAILABLE;
            }

            PHPExcel_Settings::setCacheStorageMethod($cache_method, $cache_settings);

            $xls_reader = PHPExcel_IOFactory::createReaderForFile($path);
//注释掉setReadDataOnly模式操作

//      if (!empty($custom_calls)) {
//        foreach ($custom_calls as $method => $args) {
//          if (method_exists($xls_reader, $method)) {
//            call_user_func_array(array($xls_reader, $method), $args);
//          }
//        }
//      }

            $xls_data = $xls_reader->load($path);

            $data = array();
            $headers = array();
            $options = array(
                'path' => $path,
                'keyed_by_headers' => $keyed_by_headers,
                'keyed_by_worksheet' => $keyed_by_worksheet,
            );
            $i = 0;

            phpexcel_invoke('import', 'full', $xls_data, $xls_reader, $options);

            foreach ($xls_data->getWorksheetIterator() as $worksheet) {
                $j = 0;

                phpexcel_invoke('import', 'sheet', $worksheet, $xls_reader, $options);

                foreach ($worksheet->getRowIterator() as $row) {
                    if ($keyed_by_worksheet) {
                        $i = $worksheet->getTitle();
                    }
                    $k = 0;

                    $cells = $row->getCellIterator();

                    $cells->setIterateOnlyExistingCells(FALSE);

                    phpexcel_invoke('import', 'row', $row, $xls_reader, $options);

                    foreach ($cells as $cell) {
//转换格式操作
                        $style=$xls_data->getActiveSheet()->getParent()->getCellXfByIndex($cell->getXfIndex());
                        $value_t = $cell->getValue();
                        $value=PHPExcel_Style_NumberFormat::toFormattedString(
                            $value_t,
                            ($style && $style->getNumberFormat()) ?
                                $style->getNumberFormat()->getFormatCode() :
                                PHPExcel_Style_NumberFormat::FORMAT_GENERAL
                        );
                        $value = drupal_strlen($value) ? trim($value) : '';

                        if (!$j && $keyed_by_headers) {
                            $value = drupal_strlen($value) ? $value : $k;

                            phpexcel_invoke(
                                'import',
                                'pre cell',
                                $value,
                                $cell,
                                $options,
                                $k,
                                $j
                            );

                            $headers[$i][] = $value;
                        }
                        elseif ($keyed_by_headers) {
                            phpexcel_invoke(
                                'import',
                                'pre cell',
                                $value,
                                $cell,
                                $options,
                                $k,
                                $j
                            );

                            $data[$i][$j - 1][$headers[$i][$k]] = $value;

                            phpexcel_invoke(
                                'import',
                                'post cell',
                                $data[$i][$j - 1][$headers[$i][$k]],
                                $cell,
                                $options,
                                $k,
                                $j
                            );
                        }
                        else {
                            $col_index = $k;
                            if ($cells->getIterateOnlyExistingCells()) {
                                $col_index = PHPExcel_Cell::columnIndexFromString($cell->getColumn()) - 1;
                            }

                            phpexcel_invoke(
                                'import',
                                'pre cell',
                                $value,
                                $cell,
                                $options,
                                $col_index,
                                $j
                            );

                            $data[$i][$j][$col_index] = $value;

                            phpexcel_invoke(
                                'import',
                                'post cell',
                                $data[$i][$j][$col_index],
                                $cell,
                                $options,
                                $col_index,
                                $j
                            );
                        }

                        $k++;
                    }

                    $j++;
                }

                if (!$keyed_by_worksheet) {
                    $i++;
                }
            }

            // Free up memory.
            $xls_data->disconnectWorksheets();
            unset($xls_data);

            return $data;
        }
        else {
            watchdog('phpexcel', "Couldn't find the PHPExcel library. Excel import aborted.", array(), WATCHDOG_ERROR);

            return PHPEXCEL_ERROR_LIBRARY_NOT_FOUND;
        }
    }
    else {
        watchdog('phpexcel', "The path '@path' is not readable. Excel import aborted.", array('@path' => $path));

        return PHPEXCEL_ERROR_FILE_NOT_READABLE;
    }
}