Графическая диаграмма PHPExcel вызывает нечитаемое содержимое и диаграмму удалены

Я использовал PHPExcel для генерации диаграммы, все вещи верны, но иногда, когда я открываю файл, который он показывает, сообщение указывает на нечитаемый контент, когда я нажимаю кнопку «Да» для восстановления. Бой мой код.

$workbook = new PHPExcel(); for($sh = 0; $sh <= 2; $sh++) { if($sh == 0) { $sheet = $workbook->createSheet($sh); $sheet = $workbook->setActiveSheetIndex($sh); $workbook->getActiveSheet()->setTitle($this->lang->line('co_repBased_pos')); $sheet_name = $sheet->getTitle(); } elseif($sh == 1) { //$sheet = $workbook->createSheet($sh); $sheet = $workbook->setActiveSheetIndex($sh); $workbook->getActiveSheet()->setTitle($this->lang->line('co_repBased_jloc')); $sheet_name = $sheet->getTitle(); } elseif($sh == 2) { $sheet = $workbook->createSheet($sh); $sheet = $workbook->setActiveSheetIndex($sh); $workbook->getActiveSheet()->setTitle($this->lang->line('co_total_rep')); $sheet_name = $sheet->getTitle(); } $sheet->getTabColor()->setRGB('CC000#'); // Set the page setting for easy print option $sheet->getPageSetup()->setOrientation(PHPExcel_Worksheet_PageSetup::ORIENTATION_PORTRAIT); $sheet->getPageSetup()->setPaperSize(PHPExcel_Worksheet_PageSetup::PAPERSIZE_A4); $sheet->getPageSetup()->setFitToPage(TRUE); $sheet->getPageSetup()->setFitToWidth(1); $sheet->getPageSetup()->setFitToHeight(0); // Set the protection of work book and sheet $workbook->getSecurity()->setLockWindows(true); $workbook->getSecurity()->setLockStructure(true); $workbook->getSecurity()->setWorkbookPassword("pAsSwOrD"); // Set sheet password protected $sheet->getProtection()->setSheet(TRUE); $sheet->getProtection()->setSort(true); $sheet->getProtection()->setInsertRows(true); $sheet->getProtection()->setInsertColumns(true); $sheet->getProtection()->setFormatCells(true); $sheet->getProtection()->setSelectUnlockedCells(false); $sheet->getProtection()->setSelectLockedCells(true); $sheet->getProtection()->setObjects(true); $sheet->getProtection()->setPassword("pAsSwOrD"); $styleHeadings = array( 'borders' => array( 'allborders' => array( 'style' => PHPExcel_Style_Border::BORDER_THIN, 'color' => array('argb' => '#DBDBB7'), ), ), 'font' => array( 'bold' => true, 'size' => 20 ), 'fill' => array( 'type' => PHPExcel_Style_Fill::FILL_GRADIENT_LINEAR, 'startcolor' => array( 'argb' => 'E9E9E9', ), 'endcolor' => array( 'argb' => 'E9E9E9', ), ), 'alignment' => array( 'horizontal' => PHPExcel_Style_Alignment::HORIZONTAL_CENTER ), ); if($this->mng_auth->get_language()=='en') { $sheet->setRightToLeft(false); } else { $sheet->setRightToLeft(true); } $start_headRow = $total_rows+1; $end_headRow = $total_rows+2; // Make the chart area setting $j = 'B'; for($k = 0; $k < $course_count; $k++) { $m=$k; $col = $j; $j = chr(ord($j)+$m); } $total_std = 0; foreach($chart_total_stdOfCourse as $row) { if($row[1] > $total_std) { $total_std = $row[1]; } } $input_string = $col; $base_value = 64; $decimal_value = 26; $column_index = 0; for ($d = 0; $d < strlen($input_string); $d++) { // take the ASCII value. $char_value = ord($input_string[$d]); $char_value -= $base_value; $char_value *= pow($decimal_value, (strlen($input_string) - ($d + 1))); $column_index += $char_value; } //create column for present $present = PHPExcel_Cell::stringFromColumnIndex($column_index); //echo $course_count.'/'.$column_index.'/'.$end_headRow.'/'.$present; exit; if($column_index <= 9) { $present = 'J'; $column_index = 9; } // End of chart area setting $sheet->getStyle('A'.$start_headRow.':'.$present.$end_headRow)->applyFromArray($styleHeadings); if($sh == 0) { $sheet->setCellValue('A'.$start_headRow,'ÑÇæÑ æÑÓ åÇ Èå ÇÓÇÓ ÑÊÈå ÔÇÑÏ'); } elseif($sh == 1) { $sheet->setCellValue('A'.$start_headRow,'ÑÇæÑ æÑÓ åÇ Èå ÇÓÇÓ ãÍá æÙíÝå ÔÇÑÏ'); } elseif($sh == 2) { $sheet->setCellValue('A'.$start_headRow,'ÑÇæÑ æÑÓ åÇ Èå ÇÓÇÓ ãÌãæÚå ÔÇÑÏÇä'); } $sheet->getStyle('A'.$start_headRow.':'.$present.$end_headRow)->getAlignment()->setWrapText(true); // Set mergeCells start from 0 $sheet->mergeCellsByColumnAndRow(0,$start_headRow,$column_index,$end_headRow); if($sh == 0) { $sheet->fromArray( $course_rep, NULL, 'B'.$startRow_num ); } elseif($sh == 1) { $sheet->fromArray( $course_jobLocBasedrep, NULL, 'B'.$startRow_num ); } else { $sheet->fromArray( $chart_total_stdOfCourse, NULL, 'B'.$startRow_num ); } if($sh <= 1) { $labels = array( new PHPExcel_Chart_DataSeriesValues('String', "'".$sheet_name."'".'!$C$'.$startRow_num, null, 1), new PHPExcel_Chart_DataSeriesValues('String', "'".$sheet_name."'".'!$D$'.$startRow_num, null, 1), new PHPExcel_Chart_DataSeriesValues('String', "'".$sheet_name."'".'!$E$'.$startRow_num, null, 1), new PHPExcel_Chart_DataSeriesValues('String', "'".$sheet_name."'".'!$F$'.$startRow_num, null, 1), ); // find the end row number of data source because we write from A2 so A3 is the start of main data $categories = array( new PHPExcel_Chart_DataSeriesValues('String', "'".$sheet_name."'".'!$B$'.$category_start.':$B$'.$total_rows, null, 4), ); $values = array( new PHPExcel_Chart_DataSeriesValues('Number', "'".$sheet_name."'".'!$C$'.$category_start.':$C$'.$total_rows, null, 4), new PHPExcel_Chart_DataSeriesValues('Number', "'".$sheet_name."'".'!$D$'.$category_start.':$D$'.$total_rows, null, 4), new PHPExcel_Chart_DataSeriesValues('Number', "'".$sheet_name."'".'!$E$'.$category_start.':$E$'.$total_rows, null, 4), new PHPExcel_Chart_DataSeriesValues('Number', "'".$sheet_name."'".'!$F$'.$category_start.':$F$'.$total_rows, null, 4), ); $series = new PHPExcel_Chart_DataSeries( PHPExcel_Chart_DataSeries::TYPE_BARCHART_3D, // plotType PHPExcel_Chart_DataSeries::GROUPING_STACKED, // plotGrouping array(0,1,2,3), // plotOrder $labels, // plotLabel $categories, // plotCategory $values // plotValues ); } elseif($sh == 2) { // Total student chart $labels = array( //new PHPExcel_Chart_DataSeriesValues('String', $sheet_name.'!$Q$'.$startRow_num, null, 1), new PHPExcel_Chart_DataSeriesValues('String', "'".$sheet_name."'".'!$C$'.$startRow_num, null, 1) ); // find the end row number of data source because we write from A2 so A3 is the start of main data $categories = array( new PHPExcel_Chart_DataSeriesValues('String', "'".$sheet_name."'".'!$B$'.$category_start.':$B$'.$total_rows, null, 1) ); $values = array( new PHPExcel_Chart_DataSeriesValues('Number', "'".$sheet_name."'".'!$C$'.$category_start.':$C$'.$total_rows, null, 1) //new PHPExcel_Chart_DataSeriesValues('Number', $sheet_name.'!$B$'.$category_start.':$B$'.$total_rows, null, 4), ); $series = new PHPExcel_Chart_DataSeries( PHPExcel_Chart_DataSeries::TYPE_BARCHART_3D, // plotType PHPExcel_Chart_DataSeries::GROUPING_STACKED, // plotGrouping array(0), // plotOrder $labels, // plotLabel $categories, // plotCategory $values // plotValues ); } $series->setPlotDirection(PHPExcel_Chart_DataSeries::DIRECTION_COL); $layout1 = new PHPExcel_Chart_Layout(); // Create object of chart layout to set data label $layout1->setShowVal(TRUE); $layout1->setManual3dAlign(true); $layout1->setXRotation(20); $layout1->setYRotation(20); $layout1->setPerspective(15); $layout1->setRightAngleAxes(TRUE); //$layout1->setShowPercent(TRUE); //$layout1->setShowCatName(TRUE); //$layout1->setShowSerName(TRUE); //$layout1->setShowBubbleSize(TRUE); //$layout1->setShowLeaderLines(TRUE); //$layout1->setShowLegendKey(TRUE); //$image = base_url().'image/app_req.jpeg'; //$header1 = new PHPExcel_Worksheet(); //$header1->setHeaderFooter(PHPExcel_Worksheet_HeaderFooter::addImage($image,'A12')); $plotarea = new PHPExcel_Chart_PlotArea($layout1, array($series)); $title_name = $this->lang->line('co_report').''.$this->lang->line('co_reportFrom').$rep_sdate.''.$this->lang->line('co_reportto').''.$rep_edate; //echo $title_name; exit; $title = new PHPExcel_Chart_Title($title_name, null); //$title = new PHPExcel_Chart_Title(new PHPExcel_RichText(new PHPExcel_Cell('A','1','Ttile Chart',PHPExcel_Cell_DataType::TYPE_STRING,$sheet))); $legend = new PHPExcel_Chart_Legend(PHPExcel_Chart_Legend::POSITION_RIGHT, null, false); $xTitle = new PHPExcel_Chart_Title($this->lang->line('course_names')); $yTitle = new PHPExcel_Chart_Title($this->lang->line('no_std')); $chart = new PHPExcel_Chart( 'chart1', // name $title, // title $legend, // legend $plotarea, // plotArea true, // plotVisibleOnly 0, // displayBlanksAs $xTitle, // xAxisLabel $yTitle // yAxisLabel ); $start_ofChart = $end_headRow+2; $chart->setTopLeftPosition('A'.$start_ofChart); if($total_std < 20) { $total_std+= 20; $present++; //echo $total_std; exit; $chart->setBottomRightPosition((string)$present."$total_std"); } $sheet->addChart($chart); } header('Content-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'); header('Content-Disposition: attachment;filename="training report.xlsx"'); header('Cache-Control: max-age=0'); $writer = PHPExcel_IOFactory::createWriter($workbook, 'Excel2007'); $writer->setIncludeCharts(TRUE); ob_start(); ob_end_clean(); $writer->save('php://output'); 

Но когда я открываю файл, это сообщение показывает нечитаемый контент, и когда я нажимаю кнопку «Да» для восстановления, диаграмма удаляется. Так что за любую помощь решить эту проблему спасибо.