combine multiple pdf plots into one file

Question

I am trying to merge multiple pdf plots into one master pdf file.

Example:

Input: I have three pdf files: \"1.pdf\", \"2.pdf\", and \"3.pdf\"

Outpu

Answer 1

include below code into PHP script

shell_exec("gs -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -dPDFFitPage -sPAPERSIZE=a4 -dFIXEDMEDIA -sOUTPUTFILE= abc.pdf xyz.pdf");