$selection = $_GET['scelta']; 

$query  = 'SELECT photo_code FROM'. $selection .';'; 
$result = mysql_query($query); 
$rows_nb = mysql_num_rows($query);
 
$pic_num = 0; // Set a new variable for counting our pics, and set it to 0.
$pic_code = mysql_fetch_array($result); Get our array of codes.

print('<table width="75%" border="0" align="center">'); 

while ($row = mysql_fetch_assoc($result)) 
{ 
print('<tr>'); 

for ($tb_rows=0;$tb_rows<3;$tb_rows++) 
{
 
if ($pic_num < $rows_nb)  //check that we have not exceeded the number of pictures
{ 
print('<td><div align="center"><a href="show.php?code='. $pic_code[$pic_num] .'"><img src="imagedb/thumbs/'. $pic_code[$pic_num] .'_small.png"         border="1" /></a></div></td>'); //change our row arrays to pic arrays.
$pic_num++  // Increase the number of pictures we have placed.
}
else
{
print('<td></td>');
}
 
} 

print('</tr>'); 
} 

print('</table>');

 
 
$selection = $_GET['scelta']; 
 
$query = 'SELECT photo_code FROM'. $selection .';'; 
$result = mysql_query($query); 
$rows_nb = mysql_num_rows($result);
 
$pic_num = 0; // Set a new variable for counting our pics, and set it to 0.
 
 
print('<table width="75%" border="0" align="center">'); 
 
while ($row = mysql_fetch_assoc($result)) 
{ 
 
 
  print('<tr>'); 
 
  for ($tb_rows=0;$tb_rows<3;$tb_rows++) 
  {
 
    $pic_code = mysql_fetch_array($result); //Get our code array for current pic
 
    if ($pic_num <= $rows_nb) //check that we have not exceeded the number of pictures
    { 
 
      print('<td><div align="center"><a href="show.php?code='. $pic_code[0] .'"><img src="imagedb/thumbs/'. $pic_code[0] .'_small.png" border="1" /></a></div></td>'); //change our row arrays to pic arrays.
 
      $pic_num++ // Increase the number of pictures we have placed.
 
    }
    else
    {
      print('<td></td>');
    }
 
  } 
 
  print('</tr>'); 
 
} 
 
print('</table>');

/**
* Get user avatar
*
* @param string $avatar Users assigned avatar name
* @param int $avatar_type Type of avatar
* @param string $avatar_width Width of users avatar
* @param string $avatar_height Height of users avatar
* @param string $alt Optional language string for alt tag within image, can be a language key or text
*
* @return string Avatar image
*/
function get_user_avatar($avatar, $avatar_type, $avatar_width, $avatar_height, $alt = 'USER_AVATAR')
{
	global $user, $config, $phpbb_root_path, $phpEx;
 
	if (empty($avatar) || !$avatar_type)
	{
		return '';
	}
 
	$avatar_img = '';
 
	switch ($avatar_type)
	{
		case AVATAR_UPLOAD:
			$avatar_img = $phpbb_root_path . "download/file.$phpEx?avatar=";
		break;
 
		case AVATAR_GALLERY:
			$avatar_img = $phpbb_root_path . $config['avatar_gallery_path'] . '/';
		break;
	}
 
	$avatar_img .= $avatar;
	return '<img src="' . $avatar_img . '" width="' . $avatar_width . '" height="' . $avatar_height . '" alt="' . ((!empty($user->lang[$alt])) ? $user->lang[$alt] : $alt) . '" />';
}

<?php
$i = 0;
$image_id = '';
$image_path = '';
$td = 0;
echo('<tr>');
while($i <= 10)
{
     $sql = "SELECT * FROM ' . IMAGES_TABLE . '
     WHERE image_id = $image_id
     AND image_path = $image_path";
     while($td <=3)
     {
          echo('<td><img src="');
          echo($image_path);
          echo('"></td>');
          $td++;
          if($td == 3)
          {
               echo('</tr><tr>');
               $td = 0;
          }
     }
     $i++;
     echo('</tr>');
}