Set Session Var With Ajax

I want to create a session var. I have a web page with some tabs that don't recharge when I active one another. So, I don't know how to set my session var. Indeed, my first tab wil

Solution 1:

Ajax

 $.ajax({
        type : 'POST',
        url : './session.php',
        dataType: "json",
        data: data,
        success : function(data){},
        error : function(){}
 });

PHP

<?php
    session_start();
    $_SESSION['data']=$_POST['data'];
    echo$_SESSION['data'];
    ?> 
});

Data is what you send through a POST, now echo can return that data or a different amount of data to your Ajax request as a response.

Using, $.post():

$.post({url:url,data:data,success:success,dataType:dataType});

However, $.ajax(), is much much better, since you have more control over the flow, and if success do this etc.