header('P3P: CP="CURa ADMa DEVa PSAo PSDo OUR BUS UNI PUR INT DEM STA PRE COM NAV OTC NOI DSP COR"');
if(isset($_GET['token'])) {
  setcookie('name', $_GET['token'] . ' ' . $_SERVER['HTTP_HOST']);
  echo "document.write('<br>js cookie:'+document.cookie+'<br>');";
}else {
 print_r($_COOKIE);
 $url = $_SERVER['HTTP_HOST'] == 'www.a.net' ? 'www.b.net' : 'www.a.net';
 echo "<script src='http://$url/cookie.php?token=$_SERVER[HTTP_HOST]'></script>";
 echo "<a href='http://$url/cookie.php'>test</a>";
}