php 生成年月日下载列表的解决办法

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/**
 * 生成年月日下载列表
 *
 * @param 
 * @arrange （www.idcnote.com）
 **/
function mdy($mid = "month", $did = "day", $yid = "year", $mval, $dval, $yval)
 {
  if(empty($mval)) $mval = date("m");
  if(empty($dval)) $dval = date("d");
  if(empty($yval)) $yval = date("Y");
 
  $months = array(1 => "January", 2 => "February", 3 => "March", 4 => "April", 5 => "May", 6 => "June", 7 => "July", 8 => "August", 9 => "September", 10 => "October", 11 => "November", 12 => "December");
  $out = "<select name='$mid' id='$mid'>";
  foreach($months as $val => $text)
   if($val == $mval) $out .= "<option value='$val' selected>$text</option>";
   else $out .= "<option value='$val'>$text</option>";
  $out .= "</select> ";
 
  $out .= "<select name='$did' id='$did'>";
  for($i = 1; $i <= 31; $i++)
   if($i == $dval) $out .= "<option value='$i' selected>$i</option>";
   else $out .= "<option value='$i'>$i</option>";
  $out .= "</select> ";
 
  $out .= "<select name='$yid' id='$yid'>";
  for($i = date("Y"); $i <= date("Y") + 2; $i++)
   if($i == $yval) $out.= "<option value='$i' selected>$i</option>";
   else $out.= "<option value='$i'>$i</option>";
  $out .= "</select>";
 
  return $out;
 }


/***   来自php教程（www.idcnote.com）   ***/

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