<label>
    <span>Clock:</span>
<input type="radio" name="clock" value="1">In
<input type="radio" name="clock" value="0">Out
   </label>
</div>
</label>

if (isset($_POST['submit']))
      {     if ($_POST['clock'] == 1)
           {     $time="T_IN";
           }
           else if ($_POST['clock'] == 0)
           {     $time="T_OUT";
            }
       }
$sql = "INSERT INTO TIME (EMP, $time, ITEM, NOTE)
VALUES ('".$_POST['EMP']."', '".$_POST['clock']."', '".$_POST['item']."', '".$_POST['message']."')";