<?phpusePhpOffice\PhpSpreadsheet\IOFactory;usePhpOffice\PhpSpreadsheet\Writer\Xlsx;require__DIR__.'/../Header.php';// Create temporary file that will be read$sampleSpreadsheet=require__DIR__.'/../templates/chartSpreadsheet.php';$filename=$helper->getTemporaryFilename();$writer=newXlsx($sampleSpreadsheet);$writer->save($filename);$helper->log('Load from Xlsx file');$reader=IOFactory::createReader('Xlsx');$reader->setIncludeCharts(true);$spreadsheet=$reader->load($filename);$helper->log('Update cell data values that are displayed in the chart');$worksheet=$spreadsheet->getActiveSheet();$worksheet->fromArray([[50-12,50-15,50-21],[50-56,50-73,50-86],[50-52,50-61,50-69],[50-30,50-32,50],],null,'B2');// Save Excel 2007 file$filename=$helper->getFilename(__FILE__);$writer=IOFactory::createWriter($spreadsheet,'Xlsx');$writer->setIncludeCharts(true);$callStartTime=microtime(true);$writer->save($filename);$helper->logWrite($writer,$filename,$callStartTime);