<?php
# 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

function generate_calendar($year$month$days = array(), $day_name_length 3$month_href NULL$first_day 0$pn = array()){
    
$first_of_month gmmktime(0,0,0,$month,1,$year);
    
#remember that mktime will automatically correct if invalid dates are entered
    # for instance, mktime(0,0,0,12,32,1997) will be the date for Jan 1, 1998
    # this provides a built in "rounding" feature to generate_calendar()

    
$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 $first_day) % 7#adjust for $first_day
    
$title   htmlentities(ucfirst($month_name)).'&nbsp;'.$year;  #note that some locales don't capitalize month and day names

    #Begin calendar. Uses a real <caption>. See http://diveintomark.org/archives/2002/07/03
    
@list($p$pl) = each($pn); @list($n$nl) = each($pn); #previous and next links, if applicable
    
if($p$p '<span class="calendar-prev">'.($pl '<a href="'.htmlspecialchars($pl).'">'.$p.'</a>' $p).'</span>&nbsp;';
    if(
$n$n '&nbsp;<span class="calendar-next">'.($nl '<a href="'.htmlspecialchars($nl).'">'.$n.'</a>' $n).'</span>';
    
$calendar '<table class="calendar">'."\n".
        
'<caption class="calendar-month">'.$p.($month_href '<a href="'.htmlspecialchars($month_href).'">'.$title.'</a>' $title).$n."</caption>\n<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)
            
$calendar .= '<th abbr="'.htmlentities($d).'">'.htmlentities($day_name_length substr($d,0,$day_name_length) : $d).'</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";
}
?>