Ho risolto così :
Grazie lo stesso.Codice PHP:
echo "<td width=\"".$cell_width."%\"><a href=\"".$city_url."\" class=\"citylist_city\">".$city['cityname']."";
if($show_city_adcount)
$a = "(0+".$city_accounts[$city['cityid']].")";
echo "".$a."</a></td>";