$filename = "counter.txt"; 
$fd = fopen($filename, "r"); 
if($fd)
{
	$contents = fread ($fd, filesize($filename)); 
	fclose ($fd); 

	$contents++; 
	echo $contents; 


	$fp = fopen ($filename, "w"); 
	if($fp)
	{
		fwrite ($fp,$contents); 
		fclose ($fp); 
	}
}