<select name="departdate_day" id="departdate_day" class="mobile-datepicker">
        <?php
            $i=1;
            while($i < 32){
                echo "<option>".$i."</option>";
                $i++;
            }
        ?>
    </select>
    <select name="departdate_monthyear" id="departdate_monthyear" class="mobile-datepicker">
        <?php
            $i=0;
            while($i < 25){
                echo "<option>".date("M Y",strtotime(+$i." month"))."</option>";
                $i++;
            }
        ?>
    </select>