<?php

function new_month($calendar) {
  $calendar->clear_marks();
  $selected = $calendar->get_date();
  $month = ($selected[1]+1);
  $year = $selected[0];

  if(file_exists("diary/$year/marked_dates_$month.txt")) {
    $dates = fopen("diary/$year/marked_dates_$month.txt", 'r');
    $string = explode(',', fgets($dates));
    $calendar->freeze();
    for($i = 0; $i < 31; $i++) {
      if($string[$i]==true) $calendar->mark_day($i+1);
    }

    $calendar->thaw();
    fclose($dates);
  }
}

$calendar->connect('month-changed', 'new_month');

?>