HTML Checkboxes in PHP Script Stored in SQL DB

I want to add checkboxes to my PHP page. I need help with the following:

1) What 'type' should the SQL entries be? (test1, test2, test3)
2) Can you validate that my HTML table is correct?

<table>
 <tr>
  <td>
   <form name='examples' method='POST' action="test.php">
    <input type="checkbox" name="test1"<?php if($item['test1'] == "on"){echo" CHECKED";}?>>test1<br>
    <input type="checkbox" name="test2"<?php if($item['test2']== "on"){echo" CHECKED";}?>>test2<br>
    <input type="checkbox" name="test3"<?php if($item['test3'] == "on"){echo" CHECKED";}?>>test3<br>
    <input type="submit" name="submit" value="Submit">
   </form>
  </td>
 </tr>
</table>

Select allOpen in new window