셀렉트 박스로 wr_3 필드에 날짜를 전송하고 싶습니다. 채택완료

</p><p><?</p><p>$wr_3 = @explode("-",$write[wr_3]);
$sYear = 2010; //시작 년도
$eYear = 2020; //끝 년도
?>
<select name="wr_3_1">
 <? for($years=$sYear;$years<=$eYear;$years++) { ?>
 <option value="<?=$years?>" <?=$wr_3[0] == $years ? "selected" : "" ?>><?=$years?>년</option>
 <? } ?>
</select></p><p><select name="wr_3_2">
 <? for($mth=1;$mth<=12;$mth++) { ?>
 <option value="<?=sprintf("%02d",$mth)?>" <?=$wr_3[1] == $mth ? "selected" : "" ?>><?=sprintf("%02d",$mth)?>월</option>
 <? } ?>
</select></p><p><select name="wr_3_3">
 <? for($days=1;$days<=31;$days++) { ?>
 <option value="<?=sprintf("%02d",$days)?>" <?=$wr_3[2] == $days ? "selected" : "" ?>><?=sprintf("%02d",$days)?>일</option>
 <? } ?>
</select></p><p>

</p><p>$_POST[wr_3] = $_POST[wr_3_1]."-".$_POST[wr_3_2]."-".$_POST[wr_3_3];</p><p>sql_query("update {$write_table} set wr_3 = '$_POST[wr_3]' where wr_id = '{$wr_id}'");</p><p>