list.skin.php에서 오늘등록된 게시물 숫자를 출력할때 어떻게 해야하나요?

<?
//오늘 쓴 글, list.skin.php 상단
$today_cont=@mysql_query("select wr_datetime "
."from $write_table where "
." (wr_is_comment = 0 "
." and date_format(wr_datetime,'%Y-%m-%d') = current_date() "
." ) ");
$today_cont_cnt=mysql_num_rows($today_cont);
echo"오늘등록한 게시물 {$today_cont_cnt} 개";
?>