Text file counter

This just increments by one

$count_my_page = ("companys.php");
$hits = file($count_my_page);
$hits[0] ++;
$fp = fopen($count_my_page , "w");
fputs($fp , "$hits[0]");
fclose($fp);
$hitme = $hits[0];
echo "
COMPANYS NOW".$hitme;