How to hide real referals in php???

Hello i wan't to hide the traffic on me website i mean when me surfers surf other website thats the real referer don't apply on Analytics something have to luck like DIRECT REFERAL on Analytics, Here is me php code from surf.php what i have to change and its that posible to do it do anyone know please??

<?phpsession_start();
include 'config.php';
include 'functions.php';


$adsense = mysql_query("SELECT * FROM adsense");
$pud = mysql_fetch_assoc($adsense);
$pud_num = $pud['Pub'];


if (!isset($_SESSION['login'])){
    header("Location: index.php");
}
$id = $_SESSION['uid'];
$user = $_SESSION['username'];


$sql = mysql_query("SELECT * FROM users WHERE id = '$id'");
$row_user = mysql_fetch_assoc($sql);


$time = time() - 15;


$time = date("H:i:s",$time);
$date = date("Y:m:d");


$cheaters = mysql_query("SELECT * FROM website_hits WHERE user_id = '$id' AND date = '$date' AND time > '$time'");


if (mysql_num_rows($cheaters) > 0){
?>
<script type="text/javascript">
alert("You refreshed the page, do not try and cheat the system or you may be banned, check back in 15 seconds");
location.href = 'member.php';
</script>
<?php
}else{
$get = mysql_query("SELECT * FROM websites WHERE points > 0 AND enabled = 1 ORDER BY RAND() LIMIT 1");
$row = mysql_fetch_assoc($get);
$website_id = htmlentities($row['id']);
$website_url = htmlentities($row['website']);
$website_user_id = htmlentities($row['user_id']);
$username = htmlentities($row['username']);
$website_points = htmlentities($row['points']);
$website_visitors = htmlentities($row['visitors']);


$date = date('Y-m-d');
$hit = mysql_query("SELECT * FROM website_hits WHERE target_id = '$id' AND date = '$date'");
$hits = mysql_num_rows($hit);


if (mysql_num_rows($sql) > 0){
    $date = date("Y-m-d");
    $time = date("H:i:s");
    mysql_query("INSERT INTO website_hits VALUES('','$id','$user','$website_url','$date','$time','$website_user_id','$username')");
    
    mysql_query("UPDATE websites SET points = points-1 WHERE id = '$website_id'");
    if (premium($user) == true){
        mysql_query("UPDATE users SET points = points+3 WHERE id = '$id'");
    }else{
    mysql_query("UPDATE users SET points = points+1 WHERE id = '$id'");
    }
    
    if ($row_user['refer'] != 0){
    $ref_id = $row_user['refer'];
    $query = mysql_query("SELECT * FROM users WHERE id = '$ref_id'");
    $countrows = mysql_num_rows($query);
    if ($countrows > 0){
        mysql_query("UPDATE users SET points = points+0.2 WHERE id = '$ref_id'");
    }
    }
       header("refresh:15; surf.php?control=$website_id");
}
}
?>
<link rel="stylesheet" href="main.css">
<script type="text/javascript" src="http://code.jquery.com/jquery-1.6.1.min.js"></script>


<script type="text/javascript">
        $(document).ready(function(){
         var number = 15;
            $('#reportWebsite').click(function(){
            var web = $('#hidden').val();
            $.get('report.php', { web: web }, function (data){
            
            }).success(function(){
                $('#reportWebsite').slideUp();
            });
            });
         function countdown(){
            setTimeout(countdown, 1000);
            $('#timer').text(number);
            number --;
            
            if (number<0) {
                number = 0;
            }
         }
         countdown(); 
        })
</script>
<div style="panel-container">
<div id="panel-left">
    <img src="images/clock.png" style="float: left; margin-right: 4px;" /><div id="timer" style="font-weight: bold;"></div>
    Site: <b><?php echo $website_id; ?></b>&nbsp;<a href="#" id="reportWebsite" style="font-weight: bold; color: #ffffff; font-size: 12px;">Report</a><br />
    Current Points <b><?php echo round($row_user['points']); ?></b>
    
    
</div>
<div id="panel-center">
<script type="text/javascript"><!--
google_ad_client = "ca-pub-<?php echo $pud_num; ?>";
/* gffh */
google_ad_slot = "0264687289";
google_ad_width = 468;
google_ad_height = 60;
//-->
</script>
<script type="text/javascript"
src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
</script>
</div>
<div id="panel-right">
Views Recieved Today: <b><?php echo $hits; ?></b><br />
Surf Ratio: <b><?php echo $row_user['ratio']; ?></b>
</div>
</div>
<br />
<input id="hidden" type="hidden" name="websit" value="<?php echo $website_url; ?>">
<iframe style="width: 100%; height: 88.5%;" frameborder="no" border="0" src="<?php echo $website_url; ?>"></iframe>

Code (markup):