Cookie combination Javascript/PHP on all subdomains - php

Question

I'm implementing a 'cookie notification bar' on my website. It's a grey transparent bar
that's fixed to the bottom of the screen with the notification of the use of cookies, a
link to a page with more info and on the far right a 'close' button. The bar hides
using a display:none with a javascript on-click event. My next problem: is it possible to set a cookie within the same function that closes the bar on-click? For it doesn't seem to be working, my code:
// Just before my body tag I have:
<script language="javascript">
function closeCookieBar() {
document.getElementById('cookiepolicy').style.display = 'none';
SetCookie("cookiepolicy", 1, 8)
}
</script>
// At the bottom of the page I have:
<div id="cookiepolicy" <?php if(isset($_cookie['cookiepolicy'])){ echo "style=\"display:none\""; } ?> >
<div id="cookiepolicy-wrapper">
<div id="cookiepolicy-txt">
<span id="cookiepolicy-notice">Deze website maakt gebruik van cookies. Waarom? Klik hier voor meer informatie.</span>
<span id="cookiepolicy-accept-cookies" onclick="closeCookieBar();">Sluit</span>
</div>
</div>
</div>
Next issue I am forseeing: I have about 415 subdomains I want this cookie to be saved for as well, if it set on the main domain, will it work for my subdomains?
Thanks in advance!
Sander

Answer 1

I may be able to help with part of this. Since you're using PHP, this PHP script can set a cookie that is available to all subdomains and subdirectories. If you're using a domain like xxx.co.uk you may need some adjustment around lines 30-40.
<?php // RAY_cookie_splash_page.php
error_reporting(E_ALL);
// SHOW A SPLASH PAGE ON FIRST ENTRY, THEN COOKIE THE BROWSER TO SKIP SPLASH PAGE
// TO SEE COOKIES IN FIREFOX, FOLLOW TOOLS => OPTIONS => PRIVACY => SHOW COOKIES
// MAN PAGE: http://php.net/manual/en/function.setcookie.php
// DEFINITIONS AS NEEDED HERE
define('COOKIE_LIFE', 60*60*24); // A 24-HOUR DAY IN SECONDS ( = 86,400 )
// CONSTRUCT AND SET THE COOKIE
// USE THIS TO MAKE COOKIE EXPIRE AT END OF BROWSER LIFE
$cookie_expires = 0;
// USE THIS TO MAKE A PERSISTENT COOKIE - DEFINE COOKIE_LIFE IN SECONDS - date('Z') IS UTC OFFSET IN SECONDS
$cookie_expires = time() + date('Z') + COOKIE_LIFE;
// CHOOSE THE COOKIE NAME AND VALUE
$cookie_name = 'Fred';
$cookie_value = 'Wilma';
// MAKE THE COOKIE AVAILABLE TO ALL DIRECTORY PATHS IN THE WWW ROOT
$cookie_path = '/';
// MAKE THE COOKIE AVAILABLE TO ALL SUBDOMAINS - DOMAIN NAME STARTS WITH DOT AND OMITS WWW (OR OTHER SUBDOMAINS).
$x = explode('.', strtolower($_SERVER["HTTP_HOST"]));
$y = count($x);
if ($y == 1) // MAYBE 'localhost'?
{
$cookie_domain = $x[0];
} else // SOMETHING LIKE 'www2.atf70.whitehouse.gov'?
{
// USE THE LAST TWO POSITIONS TO MAKE THE HOST DOMAIN
$cookie_domain = '.' . $x[$y-2] . '.' . $x[$y-1];
}
// MAKE THE COOKIE AVAILABLE TO HTTP, NOT JUST HTTPS
$cookie_secure = FALSE;
// HIDE COOKIE FROM JAVASCRIPT TO IMPROVE SECURITY (PHP 5.2+)
$cookie_http = TRUE;
// SET THE COOKIE (BUT DO NOT BOTHER OUTPUTTING THE DEBUGGING MESSAGES)
if (setcookie($cookie_name, $cookie_value, $cookie_expires, $cookie_path, $cookie_domain, $cookie_secure, $cookie_http))
{
// echo "<br/>SUCCESS! THE COOKIE HAS BEEN SET AND WILL BE AVAILABLE TO THE NEXT PAGE LOAD \n";
} else {
// echo "<br/>FAILURE! THE COOKIE WAS NOT SET AS EXPECTED \n";
}
// IF THE COOKIE IS NOT AVAILABLE IN THIS SCRIPT, SHOW THE SPLASH PAGE
if (empty($_COOKIE["Fred"]))
{
echo "<h1>SPLASH PAGE</h1>\n";
echo "<p>CONTINUE TO SITE</p>\n";
echo date('c');
die("\nSPLASH COMPLETE");
}
// SPLASH PAGE HAS ALREADY BEEN SHOWN
echo "<h1>REGULAR START PAGE - AFTER SPLASH HAS BEEN SHOWN</h1>\n";
echo "<p>CONTINUE TO SITE</p>\n";
echo date('c');
die("\nREGULAR PAGE COMPLETE");

Answer 2

You can create your cookie in js and use it in PHP like this
function closeCookieBar() {
document.getElementById('cookiepolicy').style.display = 'none';
var date = new Date();
date.setTime(date.getTime()+(days*24*60*60*1000));
var expires = "; expires="+date.toGMTString();
document.cookie = name+"="+value+expires+"; path=/; domain=.example.com";
}
<div id="cookiepolicy" <?php if(isset($_cookie['cookiepolicy'])){ echo "style=\"display:none\""; } ?> >
In place of name put name of your cookie and in domain put your domain.
Hope it helps...
For more u may visit Set cookie wih JS, read with PHP problem