function update_choice($departmentid,$userid ,$choice){
        $con=mysqli_connect("localhost","root","12345","e-labdb");
        // Check connection
        if (mysqli_connect_errno())
        {
            echo "Failed to connect to MySQL: " . mysqli_connect_error();
        }
        $sql="UPDATE choise SET departmentid='$departmentid',userid='$userid',choise='$choice'
                                WHERE departmentid='$departmentid' ";


        if (!mysqli_query($con,$sql))
        {
          die('Error: ' . mysqli_error());
        }
        echo "1 record updated";
        
        mysqli_close($con);
    }