$output = qq~ <form><table> ~;

$counter = 1;

foreach $result (@$returned_results) {
    $checkname = 'include_' . $counter;
    $textname  = 'summary_' . $counter;
    $urlname   = 'url_' . $counter;
    $output .= qq~
        <tr>
            <td><input type="checkbox" name="$checkname"></td>
            <td><textarea name="$textname"> yadda yadda </textarea></td>
            <td><input type="hidden" name="$urlname"></td>
        </tr>
    ~;
    
    $counter++;
}

$output .= qq~ </table></form> ~;