<?php
/**
* Generates Calendar
* PHP Calendar (version 2.3), written by Keith Devens
* http://keithdevens.com/software/php_calendar
* see example at http://keithdevens.com/weblog
* License: http://keithdevens.com/software/license
* Lots of changes by Reigo Reinmets reigo (dot) reinmets (at) hot (dot) ee
*/
function generate_calendar($year, $month, $days = array(), $day_name_length = 3, $month_href = NULL, $first_day = 1, $Links = array())
{
	$first_of_month = gmmktime(0,0,0,$month,1,$year);
	$day_names = array(); #generate all the day names according to the current locale
	for($n=0,$t=(3+$first_day)*86400; $n<7; $n++,$t+=86400) #January 4, 1970 was a Sunday
		$day_names[$n] = ucfirst(gmstrftime('%A',$t)); #%A means full textual day name

	list($month, $year, $month_name, $weekday) = explode(',',gmstrftime('%m,%Y,%B,%w',$first_of_month));
	$weekday = ($weekday + 7 - $first_day) % 7; #adjust for $first_day

	@list($ly, $lyl) = each($Links); // last year
	@list($p, $pl) = each($Links); // previous
	@list($n, $nl) = each($Links); // next
	@list($ny, $nyl) = each($Links); // next year
	$ly = '<a href="'.htmlspecialchars($lyl).'">'.$ly.'</a>';
	$p = '<a href="'.htmlspecialchars($pl).'">'.$p.'</a>';
	$n = '<a href="'.htmlspecialchars($nl).'">'.$n.'</a>';
	$ny = '<a href="'.htmlspecialchars($nyl).'">'.$ny.'</a>';

	$calendar = '<table class="green" width="100%">'."\n".
		'<tr><th colspan="7" style="text-align: center;">'.
		$ly.'&nbsp;&nbsp;'.$p.'&nbsp;'.
		htmlentities(ucfirst(t($month_name))).'&nbsp;'.$year.
		'&nbsp;'.$n.'&nbsp;&nbsp;'.$ny.
		"</th></tr><tr>";

	if($day_name_length){ #if the day names should be shown ($day_name_length > 0)
		#if day_name_length is >3, the full name of the day will be printed
		foreach($day_names as $d)
			$calendar .= '<th>'.htmlentities(t(substr($d,0,$day_name_length))).'</th>';
		$calendar .= "</tr>\n<tr>";
	}

	if($weekday > 0) $calendar .= '<td colspan="'.$weekday.'">&nbsp;</td>'; #initial 'empty' days
	for($day=1,$days_in_month=gmdate('t',$first_of_month); $day<=$days_in_month; $day++,$weekday++){
		if($weekday == 7){
			$weekday   = 0; #start a new week
			$calendar .= "</tr>\n<tr>";
		}
		if(isset($days[$day]) and is_array($days[$day])){
			@list($link, $classes, $content) = $days[$day];
			if(is_null($content))  $content  = $day;
			$calendar .= '<td'.($classes ? ' class="'.htmlspecialchars($classes).'">' : '>').
				($link ? '<a href="'.htmlspecialchars($link).'">'.$content.'</a>' : $content).'</td>';
		}
		else $calendar .= "<td>$day</td>";
	}
	if($weekday != 7) $calendar .= '<td colspan="'.(7-$weekday).'">&nbsp;</td>'; #remaining "empty" days
	return $calendar."</tr>\n</table>\n";
}
?>