How do make an array of form menu selections?

[NCC1701]

i have three drop down menus for people to select a time, this needs to be stored in a database for a restaurant booking, at the moment i have this:

    <tr> 
      <td>Time:</td>
      <td>
	    <select name="hour">
        <option value="">H</option>
        <?php echo display_hour(); ?>
        </select>
		<select name="min">
		<option value="">M</option>
		<?php echo display_min(); ?>
		</select>
		<select name="ampm">
          <option value="am">AM</option>
          <option value="pm">PM</option>
        </select>
	  </td>
    </tr>

how can i put all these values into one database field, i was thinking of an array but not sure how to do it, unless there is any other way of doing this?

[DonChris]

something like this:

// don't forget to 'clean' data

$sel_hour=$_REQUEST['hour'];
$sel_min=$_REQUEST['min'];
$sel_ampm=$_REQUEST['ampm'];

$insert=serialize(array($sel_hour,$sel_min,$sel_ampm));

$query="insert into table set col='".$insert."'";

// then just read data from db and unserialize it back to an array...