PHP Calendar

<?php
include 'classes/calendar.php';

$month = isset($_GET['m']) ? $_GET['m'] : NULL;
$year  = isset($_GET['y']) ? $_GET['y'] : NULL;

$calendar = Calendar::factory($month, $year);

$event1 = $calendar->event()
	->condition('timestamp', strtotime(date('F').' 21, '.date('Y')))
	->title('Hello All')
	->output('<a href="http://google.com">Going to Google</a>');
	
$event2 = $calendar->event()
	->condition('timestamp', strtotime(date('F').' 21, '.date('Y')))
	->title('Something Awesome')
	->output('<a href="http://coreyworrell.com">My Portfolio</a><br />It\'s pretty cool in there.');

$calendar->standard('today')
	->standard('prev-next')
	->standard('holidays')
	->attach($event1)
	->attach($event2);

<table class="calendar">
	<thead>
		<tr class="navigation">
			<th class="prev-month"><a href="<?php echo htmlspecialchars($calendar->prev_month_url()) ?>"><?php echo $calendar->prev_month() ?></a></th>
			<th colspan="5" class="current-month"><?php echo $calendar->month() ?> <?php echo $calendar->year ?></th>
			<th class="next-month"><a href="<?php echo htmlspecialchars($calendar->next_month_url()) ?>"><?php echo $calendar->next_month() ?></a></th>
		</tr>
		<tr class="weekdays">
			<?php foreach ($calendar->days() as $day): ?>
				<th><?php echo $day ?></th>
			<?php endforeach ?>
		</tr>
	</thead>
	<tbody>
		<?php foreach ($calendar->weeks() as $week): ?>
			<tr>
				<?php foreach ($week as $day): ?>
					<?php
					list($number, $current, $data) = $day;
					
					$classes = array();
					$output  = '';
					
					if (is_array($data))
					{
						$classes = $data['classes'];
						$title   = $data['title'];
						$output  = empty($data['output']) ? '' : '<ul class="output"><li>'.implode('</li><li>', $data['output']).'</li></ul>';
					}
					?>
					<td class="day <?php echo implode(' ', $classes) ?>">
						<span class="date" title="<?php echo implode(' / ', $title) ?>"><?php echo $number ?></span>
						<div class="day-content">
							<?php echo $output ?>
						</div>
					</td>
				<?php endforeach ?>
			</tr>
		<?php endforeach ?>
	</tbody>
</table>

/* Calendar Styles */
.calendar {width:100%; border-collapse:collapse;}
.calendar tr.navigation th {padding-bottom:20px;}
.calendar th.prev-month {text-align:left;}
.calendar th.current-month {text-align:center; font-size:1.5em;}
.calendar th.next-month {text-align:right;}
.calendar tr.weekdays th {text-align:left;}
.calendar td {width:14%; height:100px; vertical-align:top; border:1px solid #CCC;}
.calendar td.today {background:#FFD;}
.calendar td.prev-next {background:#EEE;}
.calendar td.prev-next span.date {color:#9C9C9C;}
.calendar td.holiday {background:#DDFFDE;}
.calendar span.date {display:block; padding:4px; line-height:12px; background:#EEE;}
.calendar div.day-content {}
.calendar ul.output {margin:0; padding:0 4px; list-style:none;}
.calendar ul.output li {margin:0; padding:5px 0; line-height:1em; border-bottom:1px solid #CCC;}
.calendar ul.output li:last-child {border:0;}

/* Small Calendar */
.calendar.small {width:auto; border-collapse:separate;}
.calendar.small tr.navigation th {padding-bottom:5px;}
.calendar.small tr.navigation th a {font-size:1.5em;}
.calendar.small th.current-month {font-size:1em;}
.calendar.small tr.weekdays th {text-align:center;}
.calendar.small td {width:auto; height:auto; padding:4px 8px; text-align:center; border:0; background:#EEE;}
.calendar.small span.date {display:inline; padding:0; background:none;}