umask

<?

$return = umask();
$format = "%04o";

printf($format, $return);

?>

1

<?

$old = umask(0);
$format = "%04o\n";

printf($format, $old);

$filename = "myfile.txt";
$mode = 0755;
chmod($filename, $mode);

$return = umask($old);
printf($format, $return);

$current = umask();
printf($format, $current);

if($old != $current)
{
    die('an error occurred while changing back the umask');
}

?>

4096