[Wiki] How to create the custom Drop-down using CHtml::dropDownList

<div class="control-group">
<label class="control-label"><?php echo $form->labelEx($model,'dob'); ?></label>
<div class="controls">
<?php  echo CHtml::dropDownList('VkUsers[month]', '', UtilityHtml::getMonthsArray());?>
<?php  echo CHtml::dropDownList('VkUsers[day]', '', UtilityHtml::getDaysArray());?>
<?php  echo CHtml::dropDownList('VkUsers[year]', '', UtilityHtml::getYearsArray());?>
</div>
</div>

/**
     * @Method        : Dynemic Month
     * @Params        :
     * @author        : Ankit Modi
     * @created       : JULY 11 2014
     * @Modified by   :
     * @modified      :
     * @Comment       : Dynemic Month
     */
    public static function getMonthsArray()
    {
        for($monthNum = 1; $monthNum <= 12; $monthNum++){
            $months[$monthNum] = date('F', mktime(0, 0, 0, $monthNum, 1));
        }
 
        return array(0 => 'Month:') + $months;
    }
 
    /**
     * @Method        : Dynemic Days
     * @Params        :
     * @author        : Ankit Modi
     * @created       : JULY 11 2014
     * @Modified by   :
     * @modified      :
     * @Comment       : Dynemic Days
     */
    public static function getDaysArray()
    {
        for($dayNum = 1; $dayNum <= 31; $dayNum++){
            $days[$dayNum] = $dayNum;
        }
 
        return array(0 => 'Day:') + $days;
    }
 
    /**
     * @Method        : Dynemic Years
     * @Params        :
     * @author        : Ankit Modi
     * @created       : JULY 11 2014
     * @Modified by   :
     * @modified      :
     * @Comment       : Dynemic Years
     */
    public static function getYearsArray()
    {
        $thisYear = date('Y', time());
 
        for($yearNum = $thisYear; $yearNum >= 1920; $yearNum--){
            $years[$yearNum] = $yearNum;
        }
 
        return array(0 => 'Year:') + $years;
    }