$homepath = trim(shell_exec('echo %HOMEPATH%') );
  $sysdrive = trim(shell_exec('echo %SystemDrive%') );
  
  $mozpath = $sysdrive . $homepath . '\Application Data\Mozilla\Firefox\Profiles';
  $dir_handle = @opendir($mozpath) or die("Unable to open $mozpath");
  $profdir = readdir($dir_handle);
  echo $profdir;