Question

I have a cookie and need to read it with JQuery or just javascript if JQuery alone is not possible.

Then I need to pass the value of that Cookie to a PHP variable

Can this be done?

UPDATE: I need everything to happen in the same page.

1. Javascript reads the already existing cookie.
2. $somePHPvariable = MyJavascriptCookieValue;

I need to use Javascript to read this cookie because I am using a wordpress cookie created in function.php and php cannot read the cookie when it’s create but after the next reload of the page, which is no good to me.

Answer 1

In PHP you can directly get the value of the cookie with $_COOKIE['variable_name']…

If you really want to get the value of the cookie in JavaScript then here is one of a few different plugins to help read/write cookies with jQuery: https://github.com/carhartl/jquery-cookie

You can then use AJAX to send the cookie information to your PHP script:

$.ajax({
    url : 'path/to/server-side.php',
    data : { cookie : $.cookie('the_cookie_name') }
});

This will send the cookie as the GET variable cookie. You will be able to access it via PHP like this: $_GET['cookie'].