This question already has an answer here:
If I missed a similar question, I'm truly sorry - I have done what I believe to be quite a bit of digging on this subject and come up empty handed.
Is it possible (or practical) to do one of the following:
1) Use the data from a web form to populate fields in a PDF?
or 2) Simply upload the PDF and allow the user to complete and submit it online?
I don't necessarily have a preference between the two, other than the most practical solution.
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mPDF is a PHP class which generates PDF files from UTF-8 encoded HTML. It is based on FPDF and HTML2FPDF, with a number of enhancements.
check it out MPDF1