How to update SESSION variable with jQuery + AJAX, is it even possible?

Question

I would like to update session variable.

Let me introduce this in simple example. We get a div with input fields printed out by PHP script, with some values etc...

Answer 1

Yes, just do a simple AJAX request. With jQuery it would be:

$("#formid").submit(function(){
   $.ajax({
      type: "POST",
      url: "someFileToUpdateTheSession.php",
      data: $(this).serialize(),
      success: function(){
          // Do what you want to do when the session has been updated
      }
   });

   return false;
});

And your PHP:

<?php
   session_start();
   $_SESSION["name"] = $_POST["name"];
   // Add the rest of the post-variables to session-variables in the same manner
?>

Note

You need to add name-attributes to your input-fields.