<?php
foreach ($_printer as $p) {
        $series = $p->getPrinterseries();
        if(!$series) {
                $series = '/';
        }
        ?>

        <select>
        <?php
                if($p->getBrand() != $lp) {
                        echo "<option value='".$this->htmlEscape($p->getBrand()."'>".$this->htmlEscape($p->getBrand()."</option>";
                        $lp = $p->getBrand();
                }
        ?>
        </select>
        <select>
        <?php
                if($series != $ls || $lp != $p->getBrand()) {
                        echo "<option value='".$this->htmlEscape($series)."'>".$this->htmlEscape($series)."</option>";
                        $lp = $p->getBrand();
                }
        ?>
        </select>
        <select>
        <?php
                echo "<option value='".$p->getDescription()."'>".$p->getDescription()."</option>";
        ?>
        </select>
<?php
}
?>