Problema con box select

[Chef89]

Ho modificato il codice ora è:

<?php
            if($row3['id']  == '1')
            {
                $query1 .= "WHERE platform=1";
                while($row1 = mysql_fetch_array($results1))
                  {
                      echo "<option value=\"$row1[id]\">$row1[title]</option>";
                  }
            } 
            elseif($row3['id'] == '2')
            {    
                $query1 .= "WHERE platform=2";
                while($row1 = mysql_fetch_array($results1))
                  {
                      echo "<option value=\"$row1[id]\">$row1[title]</option>";
                  }
            }
            elseif ($row3['id'] == '3')
            {
                $query1 .= "WHERE platform=3";
                while($row1 = mysql_fetch_array($results1))
                  {
                      echo "<option value=\"$row1[id]\">$row1[title]</option>";
                  }
            }
            else
            {
                echo "<option value=\"\"></option>";
            }
            ?>

Ma lo stesso non funziona