問題描述
我正在嘗試將現有的 PDF(以其他方式創建)添加到使用 FPDI 使用 FPDF 創建的 PDF.它似乎適用于大多數 PDF，但我收到以下錯誤:
I am trying to add an existing PDF (created otherwise) to a PDF created with FPDF using FPDI. It seems to work find for most PDFs, but I get the following error:
FPDF error: Unable to find xref table.
經過一些測試，我發現如果我使用 1.4 或更低版本(Acrobat v5 或更低版本)的 PDF 版本，它似乎可以工作.查看文件似乎是因為 PDF 格式不同.
After some testing, I figured out that if I use a PDF version of 1.4 or lower (Acrobat v5 or lower) it seems to work. Looking at the file it seems to be because of a different PDF format.
是否有解決方法或解決方案?我可能有 10 000 多個用戶上傳的 PDF，其中一些是新工作的，其中一些不是.FPDI 只是死掉而不是導致某種錯誤甚至返回 false 也很煩人
Is there a work around or solution to this? I have probably 10 000+ PDFs uploaded by users, some of the new working, some of them not. It's also annoying that FPDI just dies instead of causing some kind of error or even returning false
我現在能想到的唯一解決方案是解析 PDF 文件的第一行以確定版本，然后只添加那些超過可用版本的版本.
The only solution I can think of right now is to parse the first line of the PDF file to determine the version and only add the ones that over versions that will work.
我也在 Zend_Pdf 中嘗試過，使用 Zend Framework 附帶的演示文件，結果如下:
I also tried this in Zend_Pdf and it had the following result, using the demo file that comes with the Zend Framework:
Fatal error: Uncaught exception 'Zend_Pdf_Exception' with message 'Cross-reference streams are not supported yet.' in /Volumes/Documents/temp/ZendFramework-1.7.7/library/Zend/Pdf/Parser.php:331
Stack trace:
#0 /Volumes/Documents/temp/ZendFramework-1.7.7/library/Zend/Pdf/Parser.php(455): Zend_Pdf_Parser->_loadXRefTable('116')
#1 /Volumes/Documents/temp/ZendFramework-1.7.7/library/Zend/Pdf.php(297): Zend_Pdf_Parser->__construct('/Volumes/Docume...', Object(Zend_Pdf_ElementFactory_Proxy), true)
#2 /Volumes/Documents/temp/ZendFramework-1.7.7/library/Zend/Pdf.php(250): Zend_Pdf->__construct('/Volumes/Docume...', NULL, true)
#3 /Volumes/Documents/temp/ZendFramework-1.7.7/demos/Zend/Pdf/demo.php(37): Zend_Pdf::load('/Volumes/Docume...')
#4 {main}
thrown in /Volumes/Documents/temp/ZendFramework-1.7.7/library/Zend/Pdf/Parser.php on line 331
是否無法解析大于 1.4 的 PDF?
Is it impossible to parse PDFs greater than 1.4?
推薦答案
我發現使用商業版的 FPDI PDF-Parser 解決了我的問題.我已經使用它一年了，還沒有任何無法解析的 PDF(除非 PDF 損壞或發生了其他奇怪的事情).
I found that using commerical version of FPDI PDF-Parser solved my problem. I've been using it for a year now and haven't had any PDFs it couln't parse (unless the PDF was corrupt or had something else weird going on).
這篇關于有沒有辦法讓 FPDF/FPDI 或 Zend_Pdf 支持解析大于 1.4 的 PDF?的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網！