3일동안 new아이콘 나타내기

<?
$now = date("Y-m-d");

 

function dateDiff($date1, $date2){
 $_date1 = explode("-",$date1);
 $_date2 = explode("-",$date2);

 $tm1 = mktime(0,0,0,$_date1[1],$_date1[2],$_date1[0]);
 $tm2 = mktime(0,0,0,$_date2[1],$_date2[2],$_date2[0]);

 return ($tm1 - $tm2) / 86400;
} 
 while($n_row = mysql_fetch_array($n_result)){
  $title   = strip_tags($n_row["TITLE"]);
  $title   = stripslashes($title);
  $content2  = strip_tags($n_row["CONTENT2"]);
  $content2  = stripslashes($content2);
  $regdate = date("Y.m.d", $n_row[REGDATE]);
  $regdate2 = date("Y-m-d", $n_row[REGDATE]);
  
//  echo $regdate2;

  if($n_row["ATTR3"] == "qna"){
   $type = "문의";
  }else if($n_row["ATTR3"] == "tour"){
   $type = "투어신청";
  }else if($n_row["ATTR3"] == "etc"){
   $type = "기타";
  }else{
   $type = "&nbsp;";
  }

  if(strlen($title) > $movie_cut_title){
   $title  = mb_strcut($title, 0, $movie_cut_title, 'utf-8');
   $title .= "...";
  }else{
   $title = $title;
  }

  $dateCnt = dateDiff($now,$regdate2);
?>

 

   <tr>
     <td colspan="2" class="txt_list2" valign="top">
    <?=$content2?>&nbsp;<?if($dateCnt < 3){ echo "<img src='../img/new_icon.gif' />"; }?>
     </td>
   </tr>