使用phpSpreadSheet读写Excel文件后，图形消失

问题描述

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，我需要创建一个图形，以便用户可以看到已经制作的图形。我可以填充excel文件没有问题，但是该图没有显示。因此，我决定通过在一个空文件中添加标题和图形来简化问题，读取该文件，将数据写入该文件，然后将其导出给用户（使用下载按钮）。但是即使在这种情况下，打开图形后该图形也不存在。然后，我使用了一个非常简单的代码，但它仍然没有显示。因此，我认为我无法解决的问题在所有情况下都是相同的。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形时首先使用的代码：

$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"],-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"],-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$1',null,1),];
$xAxisTickValues = [
        new DataSeriesValues(DataSeriesValues::DATASERIES_TYPE_NUMBER,'Worksheet!$E$2:$E$6',5),];

$dataSeriesValues = [
        new DataSeriesValues(DataSeriesValues::DATASERIES_TYPE_NUMBER,'Worksheet!$F$2:$F$6',];
// 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,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->setBott@R_404_6425@ightPosition('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;

这就是我得到的（请注意，如果我使用E和F列手动制作图形，则可以正常工作）：

那是我与已经包含图形的excel文件一起使用的简单代码

$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');

下面是我所拥有的。顶部是输入文件（data.xls），底部是输出（write.xls）

感谢您的帮助

洛朗

解决方法

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！

excel excel phpspreadsheet