使用 phpSpreadSheet 读写 excel 文件后，图形消失

Question

我正在尝试使用来自 mysql 服务器并使用 phpSpreadSheet 的数据填充 excel 文件。然后，我需要创建一个图表，以便用户可以看到已经制作好的图表。我可以毫无问题地填充 excel 文件，但图表没有显示。所以我决定通过在一个空文件中添加 headers 和图形来简化问题，读取这个文件，将数据写入这个文件，并为用户导出（使用下载按钮）。但即使在这种情况下，打开后也没有图表。然后我使用了一个非常简单的代码，但它仍然没有出现。所以我认为我无法解决的问题在所有情况下都是一样的。我做错了什么所以图表消失了？这是我在创建文件并尝试创建图表时首次使用的代码：

$pdo = new PDO("mysql:host=localhost;dbname=XXXXXXX", "root", "");
$nameSens = $_POST['nameSens'];
$query = "SELECT hours, values from $nameSens";
$stmt = $pdo->prepare($query);
$stmt->execute();
$result = $stmt->fetchAll();

$spreadsheet = $file->getActiveSheet();
$spreadsheet->setTitle($nameSens);
$file->getActiveSheet()->getColumnDimension('A:F')->setAutoSize(true);
$file->getActiveSheet()->getStyle('A1:B1')->getFont()->getColor()->setARGB('FFFFFFFF');
$file->getActiveSheet()->getStyle('A1:B1')->getFill()->setFillType(\PhpOffice\PhpSpreadsheet\Style\Fill::FILL_SOLID)->getStartColor()->setARGB('FF3333CC');
$file->getActiveSheet()->getStyle('F1')->getFont()->getColor()->setARGB('FFFFFFFF');
$file->getActiveSheet()->getStyle('F1')->getFill()->setFillType(\PhpOffice\PhpSpreadsheet\Style\Fill::FILL_SOLID)->getStartColor()->setARGB('FF3333CC');
$spreadsheet->getStyle('A1:F1')->getAlignment()->setHorizontal('center');
$spreadsheet->getStyle('A:F')->getAlignment()->setHorizontal('center');
$spreadsheet->setCellValue('A1', 'day');
$spreadsheet->setCellValue('B1', 'hour');
$spreadsheet->setCellValue('F1', 'Values');

$count = 2;
foreach($result as $row) {
        $day = substr($row["hours"], 0, -9);
        $hour = substr($row["hours"], 11,);
        $spreadsheet->setCellValue('A' . $count, $day);
        $spreadsheet->getStyle('A' . $count)->getNumberFormat()->setFormatCode(PhpOffice\PhpSpreadsheet\Style\NumberFormat::FORMAT_DATE_YYYYMMDD);
        $spreadsheet->setCellValue('B' . $count, $hour);
        $spreadsheet->getStyle('B' . $count)->getNumberFormat()->setFormatCode(PhpOffice\PhpSpreadsheet\Style\NumberFormat::FORMAT_DATE_TIME6);
        $dayA = $file->getActiveSheet()->getCell('A' . $count)->getValue();
        $spreadsheet->setCellValue('C' . $count, $dayA);
        $spreadsheet->getStyle('C' . $count)->getNumberFormat()->setFormatCode(PhpOffice\PhpSpreadsheet\Style\NumberFormat::FORMAT_NUMBER_COMMA_SEPARATED1);
        $hourB = $file->getActiveSheet()->getCell('B' . $count)->getValue();
        $spreadsheet->setCellValue('D' . $count, $hourB);
        $spreadsheet->getStyle('D' . $count)->getNumberFormat()->setFormatCode(PhpOffice\PhpSpreadsheet\Style\NumberFormat::FORMAT_NUMBER_COMMA_SEPARATED1);
        $dateExcel = $file->getActiveSheet()->getCell('C' . $count)->getValue() + $file->getActiveSheet()->getCell('D' . $count)->getValue();
        $dateExcel = \DateTime::createFromFormat('Y-m-d H:i', substr($row["hours"], 0, -3))->getTimestamp();
        $dateExcel = ((($dateExcel/60)/60)/24)+25569.08;
        $spreadsheet->setCellValue('E' . $count, $dateExcel);
        $spreadsheet->getStyle('E' . $count)->getNumberFormat()->setFormatCode(PhpOffice\PhpSpreadsheet\Style\NumberFormat::FORMAT_NUMBER_COMMA_SEPARATED1);
        $spreadsheet->setCellValue('F' . $count, $row["values"]);
        $count++;
}


$dataSeriesLabels = [
        new DataSeriesValues(DataSeriesValues::DATASERIES_TYPE_STRING, 'Worksheet!$F', null, 1),
];
$xAxisTickValues = [
        new DataSeriesValues(DataSeriesValues::DATASERIES_TYPE_NUMBER, 'Worksheet!$E:$E', null, 5),
];

$dataSeriesValues = [
        new DataSeriesValues(DataSeriesValues::DATASERIES_TYPE_NUMBER, 'Worksheet!$F:$F', null, 5),
];
// Build the dataseries
$series = new DataSeries(
        DataSeries::TYPE_LINECHART,     // plotType
        DataSeries::GROUPING_STACKED,   // plotGrouping
        range(0, count($dataSeriesValues) - 1), // plotOrder
        $dataSeriesLabels,              // plotLabel
        $xAxisTickValues,               // plotCategory
        $dataSeriesValues               // plotValues
);
$series->setPlotDirection(DataSeries::DIRECTION_COL);

// Set the series in the plot area
$layout1 = new Layout();
$layout1->setShowVal(true);
$plotArea = new PlotArea($layout1, [$series]);

// Set the chart legend
$legend = new Legend(Legend::POSITION_TOPRIGHT, null, false);

$title = new Title('Data F01');
$yAxisLabel = new Title('Values (mm)');
        
// Create the chart
$chart = new Chart(
        'chart1', // name
        $title, // title
        $legend, // legend
        $plotArea, // plotArea
        true, // plotVisibleOnly
        DataSeries::EMPTY_AS_GAP, // displayBlanksAs
        null, // xAxisLabel
        $yAxisLabel,  // yAxisLabel
);

// Set the position where the chart should appear in the worksheet
$chart->setTopLeftPosition('H1');
$chart->setBottomRightPosition('O15');

// Add the chart to the worksheet
$spreadsheet->addChart($chart);*/

$writer = \PhpOffice\PhpSpreadsheet\IOFactory::createWriter($file, 'Xls');
$writer = new Xls($file);
$writer->setIncludeCharts(true);
$file_name = 'donnees-'.$nameSens.'.xls';
header('Content-Type: application/vnd.ms-excel');
header('Content-Disposition: attachment;filename="'.$file_name.'"');
header('Cache-Control: max-age=0');
ob_end_clean();
$writer->save('php://output');
exit;

这是我得到的（请注意，如果我使用 E 列和 F 列手动制作图形，它工作正常）：

这是我在 excel 文件中使用的简单代码，该文件已经包含图表

$spreadsheet = \PhpOffice\PhpSpreadsheet\IOFactory::load('../data/data.xls');
$worksheet = $spreadsheet->getActiveSheet();
$worksheet->getCell('C3')->setValue('data1');
$worksheet->getCell('D3')->setValue('data2');
$writer = \PhpOffice\PhpSpreadsheet\IOFactory::createWriter($spreadsheet, 'Xls');
$writer->save('write.xls');

以下是我的资料。顶部是输入文件 (data.xls)，底部是输出 (write.xls)

感谢您的帮助

洛朗

Answer 1

感谢 Kramar，我解决了我的问题： PHPSpreadsheet generates invalid file with charts

我只是将 displayBlanksAs 更改为 'gap' 而不是 0！

使用 phpSpreadSheet 读写 excel 文件后，图形消失

After reading and writing an excel file using phpSpreadSheet, the graph disappears

php

excel

phpoffice

phpspreadsheet