Running libreoffice from php exec()

Question

I have installed libreoffice headless on a freebsd-server with apache in order to convert documents programmatically (e.g. odt->pdf). It works from the command line! But my

Answer 1

About Universal Network Objects (UNO), there are some "plug-and-play" final-user tools, see Docvert and JODConverter (jODconverter and pyODconverter). All of then can be called as web-service or exec by PHP.