I\'d like to be able to write/overlay text over an existing pdf document using PHP. What I am hoping to do is have a pdf document that can act as a template, and fill in the
Have a look at the FPDI Library an add on to FPDF for template annotation.
It can also bolt-on to TCPDF, another popular PHP PDF library. An existing PDF is used as the base of a page, instead of a blank, after that the procedures are the same as regular PDF creation.