Comparasion between products

db.sql

index.php

<?
$servidor       = "localhost";
$basedados      = "teste";
$usuario        = "root";
$senha          = "root";

//conexão com o servidor
$conn = @mysql_connect($servidor, $usuario, $senha)or die (mysql_error());

//conexao o Banco de Dados.    
$db = @mysql_select_db($basedados, $conn) or die (mysql_error());
?>     
<table border="1">
<tr>
<td>
Caracteristicas
</td>
<?  
$id = "'4','3','1'";
 
//Aqui faco o select dos produtos, usando o IN para pegar varios registros
$sql = mysql_query("SELECT * FROM produto WHERE id IN ($id)") or die (mysql_error());  
while ($rs = mysql_fetch_array($sql)) {
?>
<td>
<table border="1">
<?
//Aqui faco o select da info
$sql_info = mysql_query("SELECT * FROM info ORDER BY info ASC") or die (mysql_error());
while ($rs_info = mysql_fetch_array($sql_info)) {

//Aqui faco o select das info dos produtos usando o IN
$sql_info_prod = mysql_query("SELECT * FROM info_produto WHERE id_produto IN ($id)")or die (mysql_error());                                                                                                                                    
while ($rs_info_prod = mysql_fetch_array($sql_info_prod)) {

//aqui faco a verificacao se o ID do produto e igual ao da info e as info sao iguais, mostra o ON
if($rs['id'] == ($rs_info_prod['id_produto']) && $rs_info['info'] == ($rs_info_prod['info'])) {
echo '<tr><td>';
echo '<b>'.$rs_info_prod['info'].'</b>';
echo '</td></tr>';
//aqui faco a verificacao caso o ID seja diferente e as info iguais, mostrara o OFF
}elseif ($rs['id'] != ($rs_info_prod['id_produto']) && $rs_info['info'] == ($rs_info_prod['info'])) {
echo '<tr><td>';
echo '<s>'.$rs_info_prod['info'].'</s>';
echo '</td></tr>';
}
}
}?>    
</table>
</td>
<?}?>
</tr>
</table>

Code (markup):

To make easy the understood about my situation, I´ll available some pictures.

The example below it´s the comparion between the ID 3 (TV lcd 50) and ID 2 (TV lcd 42)



As you can notice the comparation is correct, because not there is repeat the data.

The example below it´s the comparion between the ID 3 (TV lcd 50) and ID 1 (TV Plasma 70)



As you can notice 1920x1080 and FULL HD repeated as much as exist as not exist
The idea it´s that remain just 'exist' and not repeat the 'not exist'

One more example between ID 4,3 and 1



As you can notice 1920x1080 and FULL HD repeated as much as exist as not exist

That´s is my original idea:



The real example, check the site out below:

http://www.rossiresidencial.com.br/empreendimentos-comparacao.aspx?emp1=NB-1102&emp2=NB-1401&estado=SP&cidade=9668

This website is what I wish do. Check out Opções de Lazer

I just need that don´t repeat yes as much no, only keep yes.

So just help me about IF, to make of right way.

So, I guess that must solve in the condition IF,...

Thanks you guys !