php exec: does not return output

Question

I have this problem: On a ISS web server, windows 7 x64 professional, zend server installed. Running this command under php:

exec(\'dir\',$output, $err);
         


        

Answer 1

You can check permisssions of IIS User to cmd.exe

cacls C:\WINDOWS\system32\cmd.exe

If in output is line like (COMPUTERNAME=your computer name):

C:\WINDOWS\system32\cmd.exe COMPUTERNAME\IUSR_COMPUTERNAME:N

It means that user has no rights to execute cmd.

You can add execute permissions with command:

cacls C:\WINDOWS\system32\cmd.exe /E /G COMPUTERNAME\IUSR_COMPUTERNAME:R