foreach loop inline instead of Horizontal

Sorry for this newbie question, i'm looping my db to get the list of my categories

foreach($cats as $cat) { 
                        echo "<li><a href=\"/?page=catalogue&amp;category=".$cat['id']."\""; 
                        echo Helper::getActive(array('category' => $cat['id'])); 
                        echo ">"; 
                        echo Helper::encodeHtml($cat['name']); 
                        echo "</a></li>";  

and the list displayed Horizontal, how can i display it inline? in css i would just have done: display: inline;