PHP แสดงผล วัน จากวันเริ่มต้น จนวันสุดท้าย และหาจำนวนวัน

function date_in_period($start, $end){
	$output = array();
	$days = floor((strtotime($end) - strtotime($start))/86400);
	for($i=0;$i<=$days;$i++){
		array_push($output, date("d-m-Y",strtotime("+" . $i . " day", strtotime($start))));
	}
	return $output;
}
$date = date_in_period("2011-4-6", "2011-4-23");
foreach($date as $day){
	echo $day . "<br>";
}
echo "กี่วัน : " . count($date);

<?
function date_in_period($start, $end){
	$output = array();
	$days = floor((strtotime($end) - strtotime($start))/86400);
	for($i=0;$i<=$days;$i++){
		array_push($output, date("D-d-m-Y",strtotime("+" . $i . " day", strtotime($start))));
	}
	return $output;
}
$date = date_in_period("2011-4-6", "2011-4-23");
foreach($date as $day){
	echo $day . "<br>";
}
?>

function date_in_period($format, $start, $end, $skip = NULL){
	$output = array();
	$days = floor((strtotime($end) - strtotime($start))/86400);
	for($i=0;$i<=$days;$i++){
		$in_period = strtotime("+" . $i . " day", strtotime($start));
		if(is_array($skip) and in_array(date("D",$in_period), $skip)){
			continue;
		}
		array_push($output, date($format, $in_period));
	}
	return $output;
}
echo "No skipping : <br / >";
$date = date_in_period("D-d-m-Y", "2011-4-1", "2011-4-26");
foreach($date as $day){
	echo $day . "<br / >";
}
echo "Total : " . count($date) . " days<br / >";
echo "<br / ><br / >Has skipping : <br / >";
$date = date_in_period("D-d-m-Y", "2011-4-1", "2011-4-26", array("Sat","Sun"));
foreach($date as $day){
	echo $day . "<br / >";
}
echo "Total : " . count($date) . " days";