Saving

require_once 'File/Fstab.php';
$fstab =& new File_Fstab();
$floppy =& new File_Fstab_Entry();
$floppy->fsType = 'vfat';
$floppy->device = '/dev/fd0';
$floppy->mountPoint = '/floppy';
$fstab->addEntry($floppy);
$res = $fstab->save();
if (PEAR::isError($res)) {
    die($res->getMessage());
}

[
require_once 'File/Fstab.php';
$fstab =& new File_Fstab();
$floppy =& new File_Fstab_Entry();
$floppy->fsType = 'vfat';
$floppy->device = '/dev/fd0';
$floppy->mountPoint = '/floppy';
$fstab->addEntry($floppy);
$res = $fstab->save('/tmp/fstab.new');
if (PEAR::isError($res)) {
    die($res->getMessage());
}