Should I process text information from a form to create a pdf file?

Question

PHP

Hello. I process a huge form (questionnaire for work). The purpose of my lesson is to get data from the form, insert the variables from the form into a template (I render an html page using php), use this template to create a pdf file and then send this file by mail. Question: Do I need to process information in this case (i.e., shield something), if I do not access the database at all (I do not insert data from the form into the database), and also do not output this data from the form to the browser. Looks like I can't do any harm. But there is some unpleasant premonition that it is necessary to make a defense. To generate a pdf file from html I use MPDF.

Answer 1

My personal opinion with such a statement of the problem is that it is better to overdo it than underdo it.