How do I make a counter that only displays today's visits?

[jacksont123]

How can I have a counter that displays only today's (current day) hits/page views and it doesn't use mysql?

Here's an example of one that logs all page hits (not the ones for the current day):

<?php
$stored = "data/hits.txt"; 
function displayHitThingy($stored) { 
     $fp = fopen($stored,rw); 
     $stuff = fgets($fp,9999); 
     fclose($fp); 
     $fp = fopen($stored,w); 
     $stuff += 1; 
     print "$stuff"; 
     fputs($fp, $stuff); 
     fclose($fp); 
} 
?>

and to display it I just put

Page Hits:  <?php displayHitThingy($stored); ?>