Dittoで出力したデータに一定期間NEWマークをつけたい

<?php
// phx:newly
$ymdSeparater = '.';
$newDays = 7;
$outhtml = "<font color=#FF0000>New!</font>";

$newSec = $newDays * 86400; //24H x 60min x 60sec = 86400
$curDate = explode(' ', $output);
$half = is_array($curDate)?$curDate[0]:$curDate;
$ymd = explode($ymdSeparater , $half);

$curTime = mktime (23,59,59, $ymd[1], $ymd[2], $ymd[0]);
if($curTime > (time()- $newSec)) {
  return $outhtml;
}
return '';
?>

<?php

$placeholders['newicon'] = array("createdon","whatsNew");

if (!function_exists("whatsNew")) {
  function whatsNew($resource) {
    global $modx;
    $newmark = "";

    $now = time();
    $time = intval($resource['createdon']) + $modx->config["server_offset_time"];
    $erapse = $now - $time;
    if ($erapse <= 7*60*60*24) {
      $newmark = "NEW!!";
    }

    return $newmark;
  }
}

?>

&extenders=`newicon`

[+newicon+]

<?php

$placeholders['newicon'] = array("editedon,createdon,pub_date","whatsNew");

$newDays = isset($newDays) ? $newDays : 7;
$newMark = isset($newMark) ? $newMark : "NEW!!";

$GLOBALS['ditto_newicon'] = compact("dateSource","newDays","newMark");

if (!function_exists("whatsNew")) {
  function whatsNew($resource) {
    global $modx, $ditto_newicon;

    $now = time();
    $timestamp = ($resource[$ditto_newicon["dateSource"]] != "0") ? $resource[$ditto_newicon["dateSource"]] : $resource['createdon'];

    $erapse = $now - (intval($timestamp) + $modx->config["server_offset_time"]);
    if ($erapse <= $ditto_newicon["newDays"]*60*60*24) {
      return $ditto_newicon["newMark"];
    }

    return "";
  }
}

?>

&newDays=`3`

&newMark=`ｷﾀ━━━━(ﾟ∀ﾟ)━━━━!!`

[+newicon+]