我通过加载 Excel 工作表来生成 Excel 报告，这些工作表是用 Excel 生成的，并通过 PHP 代码填写一些数据。
现在，我想将这些 Excel 工作表转换为 PDF，因为我看到 PHPExcel 1.7.x 支持创建 PDF，所以我想：完美，我不必检查 OpenOffice 引擎，因为该引擎对于生成 PDF 没有用处实时网络用户。
但是：除此之外，我没有任何机会使用 PHPExcel 中的 PDF 编写器来编写加载的 Excel 模板。甚至无法加载和写入交付的 xls 文件。
我尝试仅通过 PHP 代码构建 excel 并删除 excel 模板：excel-to-pdf 已经失败，生成的最简单的 excel 合并了两个单元格。
这个作家是完全不能用于这样的任务吗？
附录，2013-06-09：对不起，这可能理解错误：这可能都是我的错，或者我只是没有理解核心原则。
如果要输出 pdf，则以下简单的 excel 生成代码将失败：
<?php
/** Error reporting */
error_reporting(E_ALL);
ini_set('display_errors', TRUE);
ini_set('display_startup_errors', TRUE);
date_default_timezone_set('Europe/London');
if (PHP_SAPI == 'cli')
die('This example should only be run from a Web Browser');
/** Include PHPExcel */
require_once 'app/_includes/PHPExcel_1.7/PHPExcel.php';
$rendererName = PHPExcel_Settings::PDF_RENDERER_TCPDF;
$rendererLibrary = 'tcpdf';
$rendererLibraryPath = '/inet/xxx/HTTP/devel/app/_includes/PHPExcel_1.7/'. $rendererLibrary;
if (!PHPExcel_Settings::setPdfRenderer(
$rendererName,
$rendererLibraryPath
)) {
die(
'NOTICE: Please set the $rendererName and $rendererLibraryPath values' .
'<br />' .
'at the top of this script as appropriate for your directory structure'
);
}
// Create new PHPExcel object
$objPHPExcel = new PHPExcel();
// Set document properties
$objPHPExcel->getProperties()->setCreator("Company X")
->setDescription("Test document for PDF, generated using PHP classes.");
$objPHPExcel->getActiveSheet()->getPageSetup()->setOrientation(PHPExcel_Worksheet_PageSetup::ORIENTATION_LANDSCAPE);
// Add some data
$objPHPExcel->setActiveSheetIndex(0)
->setCellValue('A1', 'Date')
->setCellValue('B1', 'Time')
->setCellValue('B2', 'Start')
->setCellValue('C2', 'End');
// This line generated errors inside the output pdf -> corrupts PDF
$objPHPExcel->setActiveSheetIndex(0)->mergeCells('B1:C1');
$objPHPExcel->getActiveSheet()->getColumnDimension('A')->setWidth(8);
$objPHPExcel->getActiveSheet()->getColumnDimension('B')->setWidth(14);
$objPHPExcel->getActiveSheet()->getColumnDimension('C')->setWidth(4);
// Rename worksheet
$objPHPExcel->getActiveSheet()->setTitle('Simple');
$objPHPExcel->getActiveSheet()->setShowGridLines(false);
// Set active sheet index to the first sheet, so Excel opens this as the first sheet
$objPHPExcel->setActiveSheetIndex(0);
// Redirect output to a client.s web browser (PDF)
header('Content-Type: application/pdf');
header('Content-Disposition: attachment;filename="p1.pdf"');
header('Cache-Control: max-age=0');
$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'PDF');
$objWriter->save('php://output');
exit;
附录，2013-06-09：这是生成的PDF文件的开头：
Notice: Array to string conversion in /inet/xxx/HTTP/devel/app/_includes/PHPExcel_1.7/PHPExcel/Writer/HTML.php on line 1236
Call Stack:
0.0010 257896 1. {main}() /inet/xxx/HTTP/devel/p1.php:0
0.0243 7798872 2. PHPExcel_Writer_PDF->save() /inet/xxx/HTTP/devel/p1.php:62
0.0243 7799224 3. PHPExcel_Writer_PDF->__call() /inet/xxx/HTTP/devel/p1.php:62
0.0243 7799728 4. call_user_func_array() /inet/xxx/HTTP/devel/app/_includes/PHPExcel_1.7/PHPExcel/Writer/PDF.php:87
0.0243 7800064 5. PHPExcel_Writer_PDF_tcPDF->save() /inet/xxx/HTTP/devel/app/_includes/PHPExcel_1.7/PHPExcel/Writer/PDF.php:87
0.0309 8678376 6. PHPExcel_Writer_HTML->generateSheetData() /inet/xxx/HTTP/devel/app/_includes/PHPExcel_1.7/PHPExcel/Writer/PDF/tcPDF.php:119
0.0313 8683176 7. PHPExcel_Writer_HTML->_generateRow() /inet/xxx/HTTP/devel/app/_includes/PHPExcel_1.7/PHPExcel/Writer/HTML.php:436
Warning: Illegal string offset 'width' in /inet/xxx/HTTP/devel/app/_includes/PHPExcel_1.7/PHPExcel/Writer/HTML.php on line 1257
Call Stack:
0.0010 257896 1. {main}() /inet/xxx/HTTP/devel/p1.php:0
0.0243 7798872 2. PHPExcel_Writer_PDF->save() /inet/xxx/HTTP/devel/p1.php:62
0.0243 7799224 3. PHPExcel_Writer_PDF->__call() /inet/xxx/HTTP/devel/p1.php:62
0.0243 7799728 4. call_user_func_array() /inet/xxx/HTTP/devel/app/_includes/PHPExcel_1.7/PHPExcel/Writer/PDF.php:87
0.0243 7800064 5. PHPExcel_Writer_PDF_tcPDF->save() /inet/xxx/HTTP/devel/app/_includes/PHPExcel_1.7/PHPExcel/Writer/PDF.php:87
0.0309 8678376 6. PHPExcel_Writer_HTML->generateSheetData() /inet/xxx/HTTP/devel/app/_includes/PHPExcel_1.7/PHPExcel/Writer/PDF/tcPDF.php:119
0.0313 8683176 7. PHPExcel_Writer_HTML->_generateRow() /inet/xxx/HTTP/devel/app/_includes/PHPExcel_1.7/PHPExcel/Writer/HTML.php:436
Warning: Invalid argument supplied for foreach() in /inet/xxx/HTTP/devel/app/_includes/PHPExcel_1.7/PHPExcel/Writer/HTML.php on line 1315
Call Stack:
0.0010 257896 1. {main}() /inet/xxx/HTTP/devel/p1.php:0
0.0243 7798872 2. PHPExcel_Writer_PDF->save() /inet/xxx/HTTP/devel/p1.php:62
0.0243 7799224 3. PHPExcel_Writer_PDF->__call() /inet/xxx/HTTP/devel/p1.php:62
0.0243 7799728 4. call_user_func_array() /inet/xxx/HTTP/devel/app/_includes/PHPExcel_1.7/PHPExcel/Writer/PDF.php:87
0.0243 7800064 5. PHPExcel_Writer_PDF_tcPDF->save() /inet/xxx/HTTP/devel/app/_includes/PHPExcel_1.7/PHPExcel/Writer/PDF.php:87
0.0309 8678376 6. PHPExcel_Writer_HTML->generateSheetData() /inet/xxx/HTTP/devel/app/_includes/PHPExcel_1.7/PHPExcel/Writer/PDF/tcPDF.php:119
0.0313 8683176 7. PHPExcel_Writer_HTML->_generateRow() /inet/xxx/HTTP/devel/app/_includes/PHPExcel_1.7/PHPExcel/Writer/HTML.php:436
0.0320 8701296 8. PHPExcel_Writer_HTML->_assembleCSS() /inet/xxx/HTTP/devel/app/_includes/PHPExcel_1.7/PHPExcel/Writer/HTML.php:1267
%PDF-1.7
附录，2013-06-10：我用 tcpdf 尝试了 21pdf.php 示例。它向我显示了一些警告，但生成了 pdf。这些是 php 输出：
21:55:52 Create new PHPExcel object
21:55:52 Set document properties
21:55:52 Add some data
21:55:52 Add comments
21:55:52 Add rich-text string
21:55:52 Merge cells
21:55:52 Protect cells
21:55:52 Set cell number formats
21:55:52 Set column widths
21:55:52 Set fonts
21:55:52 Set alignments
21:55:52 Set thin black border outline around column
21:55:52 Set thick brown border outline around Total
21:55:52 Set fills
21:55:52 Set style for header row using alternative method
21:55:52 Unprotect a cell
21:55:52 Add a hyperlink to the sheet
21:55:52 Add a drawing to the worksheet
21:55:52 Add a drawing to the worksheet
21:55:52 Add a drawing to the worksheet
21:55:52 Play around with inserting and removing rows and columns
21:55:52 Set header/footer
21:55:52 Set page orientation and size
21:55:52 Rename first worksheet
21:55:52 Create a second Worksheet object
21:55:52 Add some data
21:55:52 Set the worksheet tab color
21:55:52 Set alignments
21:55:52 Set column widths
21:55:52 Set fonts
21:55:52 Add a drawing to the worksheet
21:55:52 Set page orientation and size
21:55:52 Rename second worksheet
21:55:52 Hide grid lines
21:55:52 Set orientation to landscape
21:55:52 Write to PDF format using tcPDF
Notice: Array to string conversion in /inet/xxx/HTTP/devel/app/_includes/PHPExcel_1.7/PHPExcel/Writer/HTML.php on line 1236 Call Stack: 0.0010 258104 1. {main}() /inet/xxx/HTTP/devel/21pdf.php:0 0.1375 8979304 2. PHPExcel_Writer_PDF->save() /inet/xxx/HTTP/devel/21pdf.php:80 0.1375 8979656 3. PHPExcel_Writer_PDF->__call() /inet/xxx/HTTP/devel/21pdf.php:80 0.1375 8980096 4. call_user_func_array() /inet/xxx/HTTP/devel/app/_includes/PHPExcel_1.7/PHPExcel/Writer/PDF.php:87 0.1375 8980432 5. PHPExcel_Writer_PDF_tcPDF->save() /inet/xxx/HTTP/devel/app/_includes/PHPExcel_1.7/PHPExcel/Writer/PDF.php:87 0.1569 9542416 6. PHPExcel_Writer_HTML->generateSheetData() /inet/xxx/HTTP/devel/app/_includes/PHPExcel_1.7/PHPExcel/Writer/PDF/tcPDF.php:119 0.2014 9683184 7. PHPExcel_Writer_HTML->_generateRow() /inet/xxx/HTTP/devel/app/_includes/PHPExcel_1.7/PHPExcel/Writer/HTML.php:436 Warning: Illegal string offset 'width' in /inet/xxx/HTTP/devel/app/_includes/PHPExcel_1.7/PHPExcel/Writer/HTML.php on line 1257 Call Stack: 0.0010 258104 1. {main}() /inet/xxx/HTTP/devel/21pdf.php:0 0.1375 8979304 2. PHPExcel_Writer_PDF->save() /inet/xxx/HTTP/devel/21pdf.php:80 0.1375 8979656 3. PHPExcel_Writer_PDF->__call() /inet/xxx/HTTP/devel/21pdf.php:80 0.1375 8980096 4. call_user_func_array() /inet/xxx/HTTP/devel/app/_includes/PHPExcel_1.7/PHPExcel/Writer/PDF.php:87 0.1375 8980432 5. PHPExcel_Writer_PDF_tcPDF->save() /inet/xxx/HTTP/devel/app/_includes/PHPExcel_1.7/PHPExcel/Writer/PDF.php:87 0.1569 9542416 6. PHPExcel_Writer_HTML->generateSheetData() /inet/xxx/HTTP/devel/app/_includes/PHPExcel_1.7/PHPExcel/Writer/PDF/tcPDF.php:119 0.2014 9683184 7. PHPExcel_Writer_HTML->_generateRow() /inet/xxx/HTTP/devel/app/_includes/PHPExcel_1.7/PHPExcel/Writer/HTML.php:436 Warning: Invalid argument supplied for foreach() in /inet/xxx/HTTP/devel/app/_includes/PHPExcel_1.7/PHPExcel/Writer/HTML.php on line 1315 Call Stack: 0.0010 258104 1. {main}() /inet/xxx/HTTP/devel/21pdf.php:0 0.1375 8979304 2. PHPExcel_Writer_PDF->save() /inet/xxx/HTTP/devel/21pdf.php:80 0.1375 8979656 3. PHPExcel_Writer_PDF->__call() /inet/xxx/HTTP/devel/21pdf.php:80 0.1375 8980096 4. call_user_func_array() /inet/xxx/HTTP/devel/app/_includes/PHPExcel_1.7/PHPExcel/Writer/PDF.php:87 0.1375 8980432 5. PHPExcel_Writer_PDF_tcPDF->save() /inet/xxx/HTTP/devel/app/_includes/PHPExcel_1.7/PHPExcel/Writer/PDF.php:87 0.1569 9542416 6. PHPExcel_Writer_HTML->generateSheetData() /inet/xxx/HTTP/devel/app/_includes/PHPExcel_1.7/PHPExcel/Writer/PDF/tcPDF.php:119 0.2014 9683184 7. PHPExcel_Writer_HTML->_generateRow() /inet/xxx/HTTP/devel/app/_includes/PHPExcel_1.7/PHPExcel/Writer/HTML.php:436 0.2019 9685336 8. PHPExcel_Writer_HTML->_assembleCSS() /inet/xxx/HTTP/devel/app/_includes/PHPExcel_1.7/PHPExcel/Writer/HTML.php:1267 21:55:53 File written to 21pdf_tcPDF.pdf
Call time to write Workbook was 0.9275 seconds
21:55:53 Current memory usage: 16 MB
21:55:53 Peak memory usage: 18 MB
21:55:53 Done writing files
File has been created in /inet/xxx/HTTP/devel
有趣的旁注：看看 tcpdf 和 mPDF 的不同输出。我想我现在知道了，为什么要将 PDF 生成器的选择留给用户。
