PHP Another Very Basic Counter

<?
$file = "count.dat";
if (!is_file($file)) { $open = fopen($file, "w"); fclose($open); }
$count = implode('',file($file)) + 1;
if (eregi("E", $count)) { $open = fopen("count.dat", "w"); fclose($open); echo "clear"; }
else { $open = fopen($file, "w"); fwrite($open, $count); fclose($open); echo $count; }
?>