Запрос в БД с условием if

$row = $db->super_query("SELECT theme, default FROM dle_users WHERE name='$username'");

if( $row['theme'] == 1 ) {
       echo '<div style="position:absolute;">
            <img border="0" src="/select.png" align="left">
        </div>';
} elseif( $row['default'] == 1 ) {
       echo '<div style="position:absolute;">
            <img border="0" src="/buy.png" align="left">
        </div>';
} else {
       echo "empty or error";
}

require_once ENGINE_DIR . '/classes/mysql.php';
require_once ENGINE_DIR . '/data/dbconfig.php';