javascript - ajax is not fetching session

one text

I have sending an ajax request but the session is not working there Here is my jquery code

$.ajax({
  url: 'practice3.php',
  type: 'GET',
  data: {id: ids},
  success: function (response) {
    if (response == 1) {
      //$('.cart-items').html(response);
      alert('Add');
    } else if (respone == 0) {
      location.replace('loginregister.php');
    }
  },
});

Dont Get confused with id this is the data i was sending in ajax but first i wanted to check is session is working or not but didnt response anything and yes xhr status is 200 and here is my ajax code

<?php
ob_start();
session_start();
if (isset($_SESSION['email'])) {
    echo 1;
} else {
    echo 0;
} 
?>

Please anyone help me out