How to get coordinates in PDF?

Question

PHP

Good afternoon,
There is a task to implement automatic filling of forms (A4 format), i.e. a person fills out a form on the site, inserts the form into the printer, and the print must match the fields on the form.
Printing the form along with the text is not an option, as the forms are printed in a printing house.
I have this form in doc and pdf format.
I downloaded a library for working with PHP, FPDF, where text can be inserted by coordinates.
Is it possible somehow in a PDF file to find out the coordinates of the fields where I will enter the future text?

Answer 1

So. Measure with a ruler according to the blank printed in the printing house. You have to do it once, why do it programmatically
Any PDF editor program will show the coordinates of all fields