PHP cannot read javascript cookies

Question

I am setting a cookie with javascript and trying to read it with PHP, but php is not able to read it. I have checked that the cookie is really set with a tool called Cookies Manager.

Code(JS):

<script>
document.cookie="encrIv=" + ivB64;
</script>

Code(PHP):

<?php
$encrIv = $_COOKIE['encrIv'];
echo $encriv;
?>

I get

Notice: Undefined index: encrIv in C:\Users\joonas\Desktop\Webon cms\root\readCookie.php on line 1

Screen shot of cookie:

Check if value of ivB64 is undefined. Also at line 2 replace $encriv by $encrIv. — Ankita P., Jul 28 '15 at 09:48

Nico · Accepted Answer · 2015-07-28T10:08:32.443

3

<!DOCTYPE html>
<html>
  <head>
    <title>example</title>
    <script type="text/javascript">
       document.cookie = 'name=David' ;
    </script>
   </head>
   <body>
    <?php
       var_dump($_COOKIE['name']);
    ?>
   </body>
 </html>

with this the cookie is set. Did you correct your Typo? You wrote:

<?php
$encrIv = $_COOKIE['encrIv'];
echo $encriv;
?>

the correct way is to change the echo to

echo $encrIv;

or to change your variable to

$encriv = $_COOKIE['encrIv'];

EDIT:

Maybe your Problem is the not defined Path. define a cookie like this:

document.cookie = 'sconName='+changedName+'; path=/'

edited Jul 28 '15 at 10:08

answered Jul 28 '15 at 09:54

Nico

1,727
1
24
42

I want to put a javascript variable as the cookie's content – Jojo01 Jul 28 '15 at 10:00
thats no Problem. then `document.cookie = "name= " +user;` should work. – Nico Jul 28 '15 at 10:02
Did not change anything – Jojo01 Jul 28 '15 at 10:06
No Problem :) I had the same issue some time ago. – Nico Jul 28 '15 at 10:17

jameshwart lopez · Answer 2 · 2015-07-28T10:05:10.907

1

change your code specially the echo part from $encriv to $encrIv like this simple example

say this is index.php which you need to visit first.The file that will set a value of encrIv cookie

<!DOCTYPE html>
<html>
<head>
    <title></title>
    <script type="text/javascript">
        document.cookie="encrIv=samplecookie";
    </script>
</head>
<body>
    <?php 

        $encrIv = isset($_COOKIE['encrIv'])?$_COOKIE['encrIv']:'';
        echo $encrIv;
    ?>
</body>
</html>

then this your readCookie.php which you will visit after index.php has been loaded.

 <?php 

            $encrIv = isset($_COOKIE['encrIv'])?$_COOKIE['encrIv']:'';
            echo $encrIv;
        ?>

That should clearly help you myfriend

edited Jul 28 '15 at 10:05

answered Jul 28 '15 at 09:28

jameshwart lopez

2,993
6
35
65

[The variable name is case-sensitive](http://php.net/manual/en/language.variables.basics.php) – Alex M Jul 28 '15 at 09:30
i did some edits to my answer please notice the isset, and try it .. then tell me what happen after you try it – jameshwart lopez Jul 28 '15 at 09:41
No, because the problem still isn't solved. It still can't read the cookie i set on another page! – Jojo01 Jul 28 '15 at 09:48
that should solve your problem . maybe your accessing other page before the actual setting of cookie.. – jameshwart lopez Jul 28 '15 at 09:52
is ivB64 variable does have a value? – jameshwart lopez Jul 28 '15 at 09:54
Yes, as you can see in the screen shot – Jojo01 Jul 28 '15 at 09:54
did you try visiting the first page where you set your cookie then go to readCookie.php? Im am really confident enough because i did a simple two php file which really works – jameshwart lopez Jul 28 '15 at 10:00
can you post your actual code that set a value to the cookie.. maybe there is part of your code that clears the cookie. or maybe there a part of your readCookie.php file that clears all the cookie – jameshwart lopez Jul 28 '15 at 10:08

score 1 · Answer 3 · answered Jul 28 '15 at 09:55

1

Your code works fine for me, if I refresh the page after it has been loaded.

Your javascript code will be run after the php code (when the php interpreter has processed the html+php code and the browser interprets the processed html code), which means that when you try to access it using php it is not set yet. But when you reload the page the cookie will be there and php can access it.

answered Jul 28 '15 at 09:55

Samuel Lindblom

812
1
6
22

The javascript code is not on the same page with the php code. – Jojo01 Jul 28 '15 at 09:58
Ok, then answering your question becomes much more difficult. Have you printed all cookies with print_r($_COOKIE). If you have checked that the cookie is set but php does not list it then you probably have a domain issue, check out this question: http://stackoverflow.com/questions/5045053/set-cookie-wih-js-read-with-php-problem. – Samuel Lindblom Jul 28 '15 at 10:05
I am running this on localhost – Jojo01 Jul 28 '15 at 10:09
I tested the code that you pasted in two php+html pages with no other code on the same path on the same http server and it works. That's really all I can do with the information that you provided. The only thing else is that the cookie name in your Cookies Manager has a lowercase L while the javascript cookie name has an uppercase i and the echo has a lowercase i, but the others suggested that already. – Samuel Lindblom Jul 28 '15 at 10:21

PHP cannot read javascript cookies

3 Answers3

Linked