codice:
<?php if ($row_Recordset1['mese']==1) {
 $scadenza= date("d/m/Y", mktime(0,0,0, date('m')+ 1, date('d') , date('Y')));
 }elseif($row_Recordset1[mese']==2) {$scadenza= date("d/m/Y", mktime(0,0,0, date('m')+ 2, date('d') , date('Y')));
Ho risolto così