PHP : COUNTER

$cfile = "datapengunjung.dat";
$fh = fopen($cfile, "r+");

if (!$fh){
die("
Gagal membuka file $cfile.");
}
$s = fgets($fh, 6);

$hitung = (int) $s;
$hitung = $hitung + 1;
$hitung = str_pad($hitung, 6);

rewind($fh);
fwrite($fh, $hitung);

echo "Anda pengunjung ke $hitung";

fclose($fh);
?>