Php exec command not working on Windows, works on command line

Question

I am trying to execute the following command via PHP\'s exec function:

D:\\\\pstill -F a4 -2 -c -c -c -c -g -i -t -K -d 700 -a 4 -m XimgAsCMYK -         


        

Answer 1

If your command is this:

exec("pstill -F a4 -2 -c -c -c -c -g -i -t -K -d 700 -a 4 -m XimgAsCMYK -m Xspot -m Xoverprint -o D:\\outputfile.pdf D:\\input.jpg");

PHP escapes the backslashes, so the command that reaches the shell is ... D:\outputfile.pdf D:\input.jpg. You have to double-escape the backslashes: once for PHP and once for the shell.

exec("pstill -F a4 -2 -c -c -c -c -g -i -t -K -d 700 -a 4 -m XimgAsCMYK -m Xspot -m Xoverprint -o D:\\\\outputfile.pdf D:\\\\input.jpg");