I am in windows yeah I tried this one
if(shell_exec('C:\Program Files\GAMS23.7\gams.exe trnsport_php.gms'))
echo 'yes' ;
else echo 'no';
it wil show me no
my another try:
if(shell_exec('cd C:\Program Files\GAMS23.7') )
echo 'yes' ;
else echo 'no';
it will show me No again I even can't run CD command why?

