jquery + ajax ส่งข้อมูลไปอีกหน้า แต่เรียกดูข้อมูลไม่ได้

function savetodb(time,maxDegree) {
            total = total + 1;
            datasend = 0;
            if (total == 1 && datasend == 0) {
                global_num++;
                if(global_num == 11){
                    global_num = 0;
                    clearTimeout(timer2);
                    countDowm(0, "status");
                }else{
                    datasend = 1;
                    var user_id = "<?php echo $_SESSION['id'] ?>";
                    var created = "<?php echo date('Y-m-d H:i:s'); ?>";
                    var time = time;
                    var maxDegree = maxDegree;
                    var status = "Arm Left";
                    $.ajax({
                        type: "post",
                        url: "functions.php",
                        //data: "user_id=" + user_id+ "&created=" + created+ "&time=" + time+ "&status=" + status,
                        data: "saveMgstatus=" + 1 + "&user_id=" + user_id + "&created=" + created + "&time=" + time +"&maxDegree=" + maxDegree +"&global_num=" + global_num + "&status=" + status,
                        success: function (data) {
                            // alert(data);					
                        }
                    });
                }
                total = 0;
            }
        }

<?php
include('connect.php');
//session_start();
date_default_timezone_set('Asia/Bangkok');

if (isset($_POST['saveMgstatus'])) {
    $u_id = $_POST['user_id'];
    $created = $_POST['created'];
    $time = $_POST['time'];
    $status = $_POST['status'];
    $maxDegree = $_POST['maxDegree'];
    $global_num = $_POST['global_num'];
    saveMgstatus($conn,$u_id,$created,$time,$maxDegree,$global_num,$status);
	//testing echo
	echo "degree = " .$maxDegree. "and";
	echo $_POST['maxDegree'];
	echo "degree = $maxDegree";
}
function saveMgstatus($conn, $u_id, $created, $time, $maxDegree,$global_num, $status)
{
    $sql = "INSERT INTO `mgstatus` (`mgid`, `user_id`, `created`, `time`, `degree`, `count`, `status`) VALUES 
    (NULL, '$u_id', '$created', '$time', '$maxDegree', '$global_num', '$status');";

    if ($conn->query($sql) === TRUE) {
        echo "New record created successfully";
    } else {
        echo "Error: " . $sql . "<br>" . $conn->error;
    }
}

	
?>