ID doorlinken

if($_GET['gameid'] AND !$_SESSION['loginwargame']){

$site_naam = 'gangsterteam.com';
$select = mysql_query("SELECT * FROM leden WHERE id=".$_GET['gameid']."");
 
 if(mysql_num_rows($select) != 0){
 
  $_SESSION['gameid'] = $_GET['gameid'];
  
 }else{
 
 //header("Location: ".$mainsite_url."?pagina=home");
 
 }
}

if(!$_GET['gameid'] AND !$_SESSION['loginwargame'] AND !$_SESSION['gameid']){
$_SESSION['gameid'] = 53;
}


if(isset($_GET['pagina']) AND $_SESSION['gameid'] == ''){

    mysql_query("DELETE FROM `[online]` WHERE `login`='{$_COOKIE['login']}' AND `validate`='{$_COOKIE['validate']}' AND `IP`='{$_SERVER['REMOTE_ADDR']}'");
    setcookie("login",'',time()-24*60*60,"/","");
    setcookie("validate",'',time()-24*60*60,"/","");
    unset($_SESSION['loginwargame']);
    unset($_SESSION['IP']);
    unset($_SESSION['data']);

//$_SESSION['gameid'] = $_GET['gameid'];

    //header("Location: ".$mainsite_url."?pagina=home");
    

}

if($_GET['gameid'] AND !$_SESSION['loginwargame']){
 
$site_naam = 'gangsterteam.com';
$select = mysql_query("SELECT * FROM leden WHERE id=".$_GET['gameid']."");
 
 if(mysql_num_rows($select) != 0){
 
  $_SESSION['gameid'] = $_GET['gameid'];
 
 }else{
 
 //header("Location: ".$mainsite_url."?pagina=home");
 
 }
}
 
if(!$_GET['gameid'] AND !$_SESSION['loginwargame'] AND !$_SESSION['gameid']){
$_SESSION['gameid'] = 53;
}
 
 
if(isset($_GET['pagina']) AND $_SESSION['gameid'] == ''){
 
    mysql_query("DELETE FROM `[online]` WHERE `login`='{$_COOKIE['login']}' AND `validate`='{$_COOKIE['validate']}' AND `IP`='{$_SERVER['REMOTE_ADDR']}'");
    setcookie("login",'',time()-24*60*60,"/","");
    setcookie("validate",'',time()-24*60*60,"/","");
    unset($_SESSION['loginwargame']);
    unset($_SESSION['IP']);
    unset($_SESSION['data']);
 
//$_SESSION['gameid'] = $_GET['gameid'];
 
    //header("Location: ".$mainsite_url."?pagina=home");
 
 
}