note 27819 modified in function.setcookie by danbrown

P3P is a good idea. But. IE 6 features an inadequate definition of third party cookies. If your site is hosted on server A and your PHP stuff is coming in a framesetting from server B your setcookie-attempts will be blocked when default privacy settings are deployed. Your secondparty-cookie will be regarded as a thirdparty-cookie. So what you do is not read the P3P-Internet Explorer 6-manual at MS but send a header like <?php header('P3P: CP="NOI ADM DEV PSAi COM NAV OUR OTRo STP IND DEM"'); ?> before doing the setcookie-thing. This will enable your cookie to survive any IE-6 privacy settings. You won't do this if you're working for some doubleclick institution, because if you do, you... you...well... you are not a very nice person! --was-- P3P is a good idea. But. IE 6 features an inadequate definition of third party cookies. If your site is hosted on server A and your PHP stuff is coming in a framesetting from server B your setcookie-attempts will be blocked when default privacy settings are deployed. Your secondparty-cookie will be regarded as a thirdparty-cookie. So what you do is not read the P3P-Internet Explorer 6-manual at MS but send a header like header('P3P: CP="NOI ADM DEV PSAi COM NAV OUR OTRo STP IND DEM"'); before doing the setcookie-thing. This will enable your cookie to survive any IE-6 privacy settings. You won't do this if you're working for some doubleclick institution, because if you do, you... you...well... you are not a very nice person! http://php.net/manual/en/function.setcookie.php