create calendar

gistfile1.php

<?php
$dayNames = array(
	0 => "Sunday",
	1 => "Monday",
	2 => "Tuesday",
	3 => "Wednesday",
	4 => "Thursday",
	5 => "Friday",
	6 => "Saturday"
);
$month = 1;
$year = 2014;
echo "month = $month<br/>";

$daysInMonth = cal_days_in_month (CAL_GREGORIAN , $month , $year );
$firstDayOfMonth = mktime(0,0,0,$month,1,$year); // 0 = Sunday, 1 = Monday, etc ...
$lastDayOfMonth  = mktime(0,0,0,$month,$daysInMonth,$year);
$lastDayOfPrevMonth  = mktime(0,0,0,$month,0,$year);

echo "firstDayOfMonth = $firstDayOfMonth<br/>";
echo "lastDayOfMonth = $lastDayOfMonth<br/>";

$fristWeekDayOfMonth = strftime("%w",$firstDayOfMonth);
$lastWeekDayOfMonth  = strftime("%w",$lastDayOfMonth);
$countDaysInPrevMonth = strftime("%d",$lastDayOfPrevMonth);

$cal=array();
$week=1;
$curDayOfWeek = $fristWeekDayOfMonth;

echo "fristWeekDayOfMonth = $fristWeekDayOfMonth<br/>";
echo "lastWeekDayOfMonth = $lastWeekDayOfMonth<br/>";
echo "countDaysInPrevMonth = $countDaysInPrevMonth<br/>";



$calFirstWeekDay=1; 

$calLastWeekDay= ($calFirstWeekDay + 6)%7;

echo "calFirstWeekDay = $calFirstWeekDay<br/>";
echo "calLastWeekDay  = $calLastWeekDay<br/>";

$daysBefore = abs($fristWeekDayOfMonth - $calFirstWeekDay);

if( $calFirstWeekDay > $fristWeekDayOfMonth){
	$r = 7 - abs($fristWeekDayOfMonth - $calFirstWeekDay);
} else {
	$r = abs($fristWeekDayOfMonth - $calFirstWeekDay);
}
$daysBefore = $r;

echo "daysBefore = $daysBefore<br/>";

$daysAfter = abs( $lastWeekDayOfMonth - $calLastWeekDay);
if( $lastWeekDayOfMonth >  $calLastWeekDay) $daysAfter = 7- $daysAfter;

echo "daysAfter = $daysAfter<br/>";

$calTotalDays = $daysBefore + $daysInMonth + $daysAfter;
echo "calTotalDays = $calTotalDays<br/>";

$calCurWeekDay=$calFirstWeekDay;
$day = $countDaysInPrevMonth - $daysBefore;

const  BEFORE_MONTH = "BEFORE_MONTH";
const  IN_MONTH     = "IN_MONTH";
const  AFTER_MONTH  = "AFTER_MONTH";
$cursor = BEFORE_MONTH;
$cal = array();
$i = $calTotalDays;
$calendar = array();
$weekIdx = 0;
while($i > 0) {

	if( $cursor == BEFORE_MONTH && $fristWeekDayOfMonth == $calCurWeekDay) {
		$cursor = IN_MONTH;
		$day = 0;
	}
	else if( $cursor == IN_MONTH && $day == $daysInMonth ) {
		$cursor = AFTER_MONTH;
		$day = 0;
	} 
	else if( $cursor == AFTER_MONTH && $calCurWeekDay == $calFirstWeekDay) {
		break;
	}
	
	if( $calCurWeekDay == $calFirstWeekDay)
		$weekIdx++;	
	
	$day++;
	
	$dayItem = array(
		'dayOfWeek' => $calCurWeekDay,
		'cursor'    => $cursor,
		'day'       => $day
	);
	$cal[] = $dayItem;
	
	$calendar[$weekIdx][] = $dayItem;

	
	$calCurWeekDay = ($calCurWeekDay +1)%7;
	$i--;
}
?>
<hr/>
<table width="100%" border="1">
	<caption>
		Caption
	</caption>
	<thead>
		<tr>
			<?php foreach( $calendar[1] as $calWeek  ):?>
				<th><?php echo $dayNames[$calWeek['dayOfWeek']] . "(" .$calWeek['dayOfWeek'] .")"; ?></th>
			<?php endforeach; ?>
		</tr>
	</thead>
	<tbody>
		<?php foreach( $calendar as $calWeek  ):?>
			<tr>
				<?php foreach( $calWeek as $calDay ) :?>		
					<td><?php echo $calDay['day']; ?></td>
				<?php endforeach; ?>
			</tr>
		<?php endforeach; ?>
	</tbody>
	<tfoot>
		<tr>
			<td colspan="7">footer</td>
		</tr>
	</tfoot>
</table>
<?php
echo '<pre>';
print_r($calendar);
echo '</pre>';
?>