Simpele unieke bezoekers

<?php
function counter()
{
	$query = mysql_query("SELECT visitors FROM stats") or die(mysql_error());
	$sql = mysql_fetch_array($query);

	if(!isset($_COOKIE['visit']))
	{
		$usertime = localtime();
		$sec = 60-$usertime[0];
		$min = 60-$usertime[1];
		$hour = 24-$usertime[2];
		$min = $min*60;
		$hour = $hour*60*60;
		$ttl = $hour+$min+$sec;
		setcookie("visit", "true", time()+$ttl);
		
		// voeg toe aan teller
		$visitors = $sql['visitors']+1;
		mysql_query("UPDATE stats SET visitors=".$visitors." WHERE visitors=".$sql['visitors']) or die(mysql_error());
	}
	else
	{
		$visitors = $sql['visitors'];
	}
	
	return $visitors;
}
?>

<?php
function counter()
{
	$query = mysql_query("SELECT visitors FROM stats") or die(mysql_error());
	$sql = mysql_fetch_array($query);
 
	if(!isset($_COOKIE['visit']))
	{
		$usertime = localtime();
		$sec = 60-$usertime[0];
		$min = 60-$usertime[1];
		$hour = 24-$usertime[2];
		$min = $min*60;
		$hour = $hour*60*60;
		$ttl = $hour+$min+$sec;
		setcookie("visit", "true", time()+$ttl);
 
		// voeg toe aan teller
		$visitors = $sql['visitors']+1;
		mysql_query("UPDATE stats SET visitors=".$visitors." WHERE visitors=".$sql['visitors']) or die(mysql_error());
	}
	else
	{
		$visitors = $sql['visitors'];
	}
 
	return $visitors;
}
?>

CREATE TABLE `stats` (
  `visitors` int(11) NOT NULL default '0'
)

CREATE TABLE `stats` (
  `visitors` int(11) NOT NULL default '0'
)

<?php
echo counter();
?>

<?php
echo counter();
?>