jQuery $.POST not working - Add a variable in $_SESSION

Question

I have a file named "test.php" with a link to "test2.php":

<a href="test2.php" id="test">Test</a>

In my test2.php, I check the $_SESSION variable:

<?php session_start();
var_dump($_SESSION);

When I click on the link in the "test.php" file, I want to add data in the $_SESSION variable, so here is my js:

$('#test').on('click', function(e) {
   $.post('test3.php', { myvar : 'myvalue' } );
});

And on the "test3.php" file, I have this piece of code:

<?php session_start();
    $_SESSION['myvar'] = $_POST['myvar'];

I don't understand why it's not working... In the "test2.php" file, the $_SESSION['myvar'] does not exist.

Thanks for your help!

Answer 1

The request to test3.php will be cancelled, because you're not preventing the default behaviour of following the link to test2.php.

Try the following;

$('#test').on('click', function(e) {
   $.post('test3.php', { myvar : 'myvalue' } );
   e.preventDefault();
});

You can then redirect to test2.php when the request completes;

$('#test').on('click', function(e) {
   var that = this;

   $.post('test3.php', { myvar : 'myvalue' } ).done(function () {
       window.location.href = that.href;
   });

   e.preventDefault();
});

Answer 2

you have to change little bit of your code

<a href="javascript:void(0)" id="test">Test</a> 

and

$('#test').on('click', function(e) {
   $.post('test3.php', { myvar : 'myvalue' } ,function(){
window.location.reload('test2.php');//opening page here

});
});

this should work