If php.ini has exec() disable, can I still use cgi script to use this function. example calling this:

"gs -dNOPAUSE -sDEVICE=pdfwrite -sOUTPUTFILE=Merged.pdf -dBATCH 1.pdf 2.pdf 3.pdf"

(ghostscript is used to merge 2 pdf files)

Thanks!

There are a number of other functions PHP has with similar functionality to exec(). If only exec() is disabled, you could try: system(), popen(), passthru(), shell_exec(), etc.