<?php 
  $db = mysql_connect('localhost', 'username', 'password') or die('Could not connect: ' . mysql_error()); 
$db_selected= mysql_select_db("databaseName", $db);
if (!$db_selected)
  {
  die ("Can\'t use test_db : " . mysql_error());
  }  
        $name = mysql_real_escape_string($_GET['name']); 
        $date = date("d/m/Y");
        $adClick =($_GET['adNum']);
        $playN = ($_GET['playClick']);
$query = "INSERT INTO playerData (mac,date,adClick,playNum) VALUES ('$name', '$date','$adClick','$playN') ON DUPLICATE KEY UPDATE playNum = playNum+$playN, adClick = adClick + $adClick;";
$results = mysql_query($query, $db);
echo "$query";
mysql_close($db);
?>