Stuart I changed it to this one:$cmd = 'C:/Program\\Files/.... Now it tells: string(43) "The system cannot find the path specified. " On Fri, Feb 17, 2012 at 4:12 PM, Negin Nickparsa <nickparsa@xxxxxxxxx>wrote: > Oops no! it shows this one: > string(100) "'C:/Program\' is not recognized as an internal or external > command, operable program or batch file. " > > On Fri, Feb 17, 2012 at 4:10 PM, Negin Nickparsa <nickparsa@xxxxxxxxx>wrote: > >> 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/ >>> >>> >> >