Missing characters in filled pdf using PDFTk with encoding UTF-8

问题

I'm trying to fill pdf documents using PDFTk. Script working fine, it fills inputs in form but I don't get special characters [polish charset: UTF-8 or ISO-8859-2].

Script: https://github.com/mikehaertl/php-pdftk

The weird thing is that generated pdf actually has polish characters when I click on field.

Before click:

After click on field:

---

Default encoding is set to UTF-8. The problem is that PDFTk can't use chars outside the standard ASCII with FDF form fill. It doesn't allow multi-byte characters.

What I did:

1. Add fonts to pdf files (checked and files has font)
2. Create fields in pdf files with default font (Arial)
3. Change encoding in script (function fillForm) to ISO-8859-2
4. Change data values encoding (iconv or mb_convert_encoding)
5. Change functions encoding and data value encoding to ISO-8859-2
6. Flatten pdf after filling the form
7. Read all topics about this problem in stackoverflow, google

UPDATE (25.03.2016): Findout that pdf documents works fine on some computers. Some people have polish characters and other don't. All of us have right fonts (with polish charset). I used default Arial or Times New Roman. Fonts are also embed in that file.

Any ideas?

回答1:

you need to run pdftk with need_appearances as an argument.

kudos to the guys from this issue on github.

回答2:

I had similar issue. Solved it with utf8_decode function. eg utf8_decode('Łukasz')

回答3:

I could not find how to change font, so my solution - use itext, https://itextpdf.com/en/resources/examples/itext-5/filling-out-forms

wrote for my project https://github.com/dddeeemmmooonnn/pdf_form_filler

来源：https://stackoverflow.com/questions/36196850/missing-characters-in-filled-pdf-using-pdftk-with-encoding-utf-8