How to pass JS variable to php?

Question

I have a javascript functions which returns a hash. I need to pass this hash to php to do stuff with it. Whats the best way to do that?

Answer 1

You could use a cookie. How the exchange takes place (AJAX, page reload, whatever) is up to you.

in PHP: see setcookie()

in JS: see document.cookie - or perhaps a JS library such as Dojo / jQuery.