Week calculator for Lancaster University

uniweek.php

<?php
// The year start date...
define("YEARSTART", mktime(0, 0, 0, 10, 5, 2007), FALSE);

   // Calculates the week number from the start of the year as set in the
   // general configuration files.  Returns an array containing the uni week
   // number [0], the term name as a string [1] and a boolean if the current
   // week is during a holiday [2]...
function universityWeek() {

   // Work out this week's 'real' number...
  $todayTimestamp = mktime(0, 0, 0, date("n"), date("j"), date("Y"));
  $realWeek =  ceil(($todayTimestamp - YEARSTART) / 604800);

   // And from that work out the university week and holiday flag...
  if ($realWeek == 0) {
    $university = array(0, FALSE);
  } else if (($realWeek > 0) && ($realWeek <= 10)) {
    $university = array($realWeek, "Michaelmas Term", FALSE);
  } else if (($realWeek > 10) && ($realWeek <= 14)) {
    $university = array(10, "Michaelmas Term", TRUE);
  } else if (($realWeek > 14) && ($realWeek <= 24)) {
    $university = array(($realWeek - 4), "Lent Term", FALSE);
  } else if (($realWeek > 24) && ($realWeek < 28)) {
    $university = array(20, "Lent Term", TRUE);
  } else if (($realWeek >= 29) && ($realWeek <= 39)) {
    $university = array(($realWeek - 8), "Summer Term", FALSE);
  } else {
    $university = array(-1, "Summer Vacation", TRUE);
  }
  print "<!--DEBUG-realweek=$realWeek-->\n";

  return $university;

}
$week = universityWeek();
?>
<style type='text/css'>
        body {
        text-align: center;
        margin-top: 10%;
        font-family: sans-serif;
        }

        #preface {
                font-size:12pt;
                color: #676767;
                }
</style>
<h1 id='preface'>
At Lancaster University...
</h1>
<? if($week[2] == 1) {
?>
        <h1 class='week'>It's a Holiday!</h1>
<?
} else {
?>
        <h1 class='week'>It's Week <span style='font-size: 100pt'><?=$week[0]?><                                                                               /span> of <?=$week[1]?>.
<?
}
?>