how I create this dynamically generated form.

[thara]

I am going to create a HTML form dynamically with php. Using that form users can select subjects under different category. A category and Its subjects have broken to one logical section and have applied jquery accordion. In my form I need to create more logical section like that.

this is my HTML

<form action="" method="post">
  <div id="accordion">
	<!-- logical section 1 -->
	<div>
		<h3>Category 01: <span>category name</span><span></span></h3>
		<div class="container">
		<table>
			<tr>
			  <td width="50%">
				<input type="checkbox" value="1" name="subject[]">subject1
			  </td>
			  <td width="50%">
				<input type="checkbox" value="2" name="subject[]">subject2
			  </td>
			</tr>           

		</table>                                               

		</div>
	</div>

<!-- logical section 2 -->
<div>
	<h3>Category 02: <span>category name</span><span></span></h3>
	<div class="container">
	<table>
		<tr>
		  <td width="50%">
			<input type="checkbox" value="1" name="subject[]">subject1
		  </td>
		  <td width="50%">
			<input type="checkbox" value="2" name="subject[]">subject2
		  </td>
		</tr>           
	</table>                                               
	</div>
</div>
  </div>                                         

</form>

Now I am trying to generate above form dynamically using category values which come from sessions. This is the PHP code I have tried so far..

<form action="" method="post"><br />
<div id="accordion">

<?php
// Check SESSION fromm category page
if ( isset ( $_SESSION['category']) && is_array( $_SESSION['category'])) {

$categoryIds = implode(',', $_SESSION['category']);

$q = "SELECT c. category_id AS ci, c.category_name AS cn, s.subject_name AS sn, s.subject_id AS si
FROM category AS c
INNER JOIN category_subjects AS cs ON cs.category_id = c.category_id
INNER JOIN subjects AS s ON s.subject_id = cs.subject_id
WHERE c.category_id IN ($categoryIds)";

$r = mysqli_query( $dbc, $q) ;


$catID = false;
$max_columns = 2;

while ($row = mysqli_fetch_array($r, MYSQLI_ASSOC)) {

     $categoryId = $row['ci'];
     $category = $row['cn'];

     //Detect change in category
     if($catID != $row['ci'])
     {
             if($catID!=false)
             {
                     if($recCount % $max_columns != 0)
                     {
                             //Close previous row
                             echo "</tr>\n";
                     }
                     //Close previous table
                     echo "</table>\n";
             }

             $catID = $row['ci'];
             echo "<div>\n";
             echo "<h3>Category 01: <span>{$category}</span><span></span></h3>\n";
             echo "<div class='container'>\n";
echo "<table><tr>\n";
                 $recCount = 0;
         }

     $recCount++;

     if($recCount % $max_columns == 1)
     {
             echo "<tr>\n";
     }

     $value = "{$row['ci']}:{$category}:{$row['si']}:{$row['sn']}";
     echo "<td width='50%'>";
     echo "<input type='checkbox' name='subject[]' value='{$value}' />{$row['sn']}";
     echo "</td>\n";

     if($recCount % $max_columns == 0)
     {
             echo "</tr>\n";
     }

if($recCount % $max_columns != 0)
{
//Close last row
echo "</tr>\n";
}
//Close last table
echo "</table>\n";

echo "</div></div>";
}
}

?>

</div> <!-- end #accordion div -->
</form> 

Can anybody tell my where I am going wrong? I troubled how to create inner table with 2 columns.

example.jpg