ok sorry,I tried yours It generates Null. On Fri, Feb 17, 2012 at 4:06 PM, Stuart Dallas <stuart@xxxxxxxx> wrote: > Please quote the relevant parts of the email you're replying to - your > emails have massively diminished usefulness to the archives. > > On 17 Feb 2012, at 12:21, Negin Nickparsa wrote: > > It generates NULL > > > My bad, try this… > > $cmd = 'C:/Program\\ Files/GAMS23.7/gams.exe'.' > '.escapeshellarg('C:/Program > Files/GAMS23.7/trnsport_php.gms').' 2>&1'; > > If that still doesn't seem to work, I suggest you try just executing the > command without arguments… > > $cmd = 'C:/Program\\ Files/GAMS23.7/gams.exe 2>&1'; > > Backticks execute a command and return the output: > http://php.net/language.operators.execution > > -Stuart > > -- > Stuart Dallas > 3ft9 Ltd > http://3ft9.com/ > >