fop doesn't work on command line

[bomber19]

Hi,

I really need help. I'm using Suse 8.1 Linux with php. I'm trying to convert an xml and xsl file into an pdf file with the Apache FOP.
The command is allright and works if I directly enter it into the command line, but doesn't when I try to execute it out of php with exec()

Nothing happens, not even a error message is shown. I even tried to generate a shell script file on the file system with the fop-command and tried to execute the script file. Same failture...

I don't know what's the reason for it. Especially since the exec() command works with exec(zip file1 file2 ...) fine.

Thanks for your help!!!