$sql ="SELECT product_id FROM shop_category_products WHERE category_id = '$category_id'";
$result = mysql_query($sql)  or die(mysql_error());
while ($myrow = mysql_fetch_assoc($result)){
	$product_id = $myrow['product_id'];
	
	$sql2 ="SELECT * FROM shop_product_features GROUP BY `feature_value_id` HAVING product_id = '$product_id' AND feature_id = '5'";
	$result2 = mysql_query($sql2)  or die(mysql_error());
	while ($myrow2 = mysql_fetch_assoc($result2)){
		$feature_value_id = $myrow2['feature_value_id'];
		
		$sql3 ="SELECT value, id FROM shop_feature_values_varchar WHERE id = '$feature_value_id'";
		$result3 = mysql_query($sql3)  or die(mysql_error());
		while ($myrow3 = mysql_fetch_assoc($result3)){
			/*$model .= "<option value='".$myrow3['id']."'>".$myrow3['value']."</option>";*/
			$model .= $myrow3['id']."!!!".$myrow3['value']."<br>";
		}
	}
}