<?php  

$filename="counter.txt";  

if(!file_exists($filename)){  
$fd = fopen ($filename , "w+");  
fclose($fd);  
}  

$hits0 = file_get_contents($filename);  
$hits = $hits0 + 1;  
echo $hits;  

$fd = fopen ($filename,"w");  
$fout= fwrite ($fd ,$hits);  
fclose($fd);   
?>