Accessing $_COOKIE immediately after setcookie()

Http cookies are headers that are transferred between the client (the browser), and the webserver.

When you use setcookie, what you are doing is instructing the PHP interpreter to inject a header in its response with this format:

Set-Cookie:name=value

That cookie will be stored by the browser, and returned by it in future requests (to the same host) in the Cookies request header like this:

Cookie:name=value;cookie2=value;cookie3=value

Normally, when transferring this you should urlencode any special characters. Let's say that I wan to specify a cookie named "operator" with a value of ">", then I should emit this header:

Set-Cookie:operator=%3E

When it says that the value is automatically urlencoded, is saying that you don't have to worry about that. You can simply do:

setcookie('operator', ">");

And PHP will handle the urlencoding directly, producing the correct header.

On the server side, you'll receive cookies in the $_COOKIES superglobal, and in the same way that happens with $_GET and $_POST, values will be automatically urldecoded for you. So if the client returns the previously set cookie %3E, you'll see: > in your code.

If you use your browser inspector, you can see the relevant headers on any request-response. E.g.:

request (returning cookie)

response (setting cookie)

setrawcookie, does the same, but you have to urlencode on your own. From the docs:

setrawcookie() is exactly the same as setcookie() except that the cookie value will not be automatically urlencoded when sent to the browser.

More likely than not, you won't have any reason to ever use setrawcookie directly.

<?php
$cookie_name = "test";
$cookie_value = "123";
setcookie($cookie_name, $cookie_value, time() + (86400 * 30), "/"); // 86400 = 1 day
?>

You need to write your php code like this

You can use this script If u can want particular cookie

<script>
function getCookie(cname) {
    var name = cname + "=";
    var ca = document.cookie.split(';');
    for(var i=0; i<ca.length; i++) {
        var c = ca[i];
        while (c.charAt(0)==' ') c = c.substring(1);
        if (c.indexOf(name) == 0) return c.substring(name.length,c.length);
    }
    return "";
}

console.log(getCookie('test'));
<script>