class Calendar {
public function __construct(){
$this->naviHref = htmlentities($_SERVER['PHP_SELF']);
}
/********************* PROPERTY ********************/
private $dayLabels = array("一","二","三","四","五","六","日");
private $currentYear=0;
private $currentMonth=0;
private $currentDay=0;
private $currentDate=null;
private $daysInMonth=0;
private $naviHref= null;
/********************* PUBLIC **********************/
public function show() {
@$year == null;
@$month == null;
if(null==@$year&&isset($_GET['year'])){
@$year = $_GET['year'];
}else if(null==@$year){
@$year = date("Y",time());
}
if(null==@$month&&isset($_GET['month'])){
$month = $_GET['month'];
}else if(null==@$month){
$month = date("m",time());
}
$this->currentYear=$year;
$this->currentMonth=$month;
$this->daysInMonth=$this->_daysInMonth($month,$year);
$content='<div id="calendar">'.
'<div class="box">'.
$this->_createNavi().
'</div>'.
'<div class="box-content">'.
'<ul class="label">'.$this->_createLabels().'</ul>';
$content.='<div class="clear"></div>';
$content.='<ul class="dates">';
$weeksInMonth = $this->_weeksInMonth($month,$year);
// Create weeks in a month
for( $i=0; $i<$weeksInMonth; $i++ ){
//Create days in a week
for($j=1;$j<=7;$j++){
$content.=$this->_showDay($i*7+$j);
}
}
$content.='</ul>';
$content.='<div class="clear"></div>';
$content.='</div>';
$content.='</div>';
return $content;
}
/********************* PRIVATE **********************/
private function _showDay($cellNumber){
if($this->currentDay==0){
$firstDayOfTheWeek = date('N',strtotime($this->currentYear.'-'.$this->currentMonth.'-01'));
if(intval($cellNumber) == intval($firstDayOfTheWeek)){
$this->currentDay=1;
}
}
if(($this->currentDay!=0)&&($this->currentDay<=$this->daysInMonth)){
$this->currentDate = date('Y-m-d',strtotime($this->currentYear.'-'.$this->currentMonth.'-'.($this->currentDay)));
$cellContent = $this->currentDay;
$this->currentDay++;
}else{
$this->currentDate =null;
$cellContent=null;
}
return '
<li id="li-'.$this->currentDate.'" class="'.($this->currentDate==date("Y-m-d")?'today':'').' relative '.($cellNumber%7==1?' start ':($cellNumber%7==0?' end ':' ')).
($cellContent==null?'mask':'').'">'.($cellContent==null?'':'
<span class="cellContent">'.$cellContent.'</span>
<div class="avatar_review_layout">
<span today="'.$cellContent.'" date="'.$this->currentDate.'"
class="pointer relative addicon add_'.$this->currentDate.'"><span class="plus">＋</span></span>
</div>
').'</li>';
}
private function _createNavi(){
$nextMonth = $this->currentMonth==12?1:intval($this->currentMonth)+1;
$nextYear = $this->currentMonth==12?intval($this->currentYear)+1:$this->currentYear;
$preMonth = $this->currentMonth==1?12:intval($this->currentMonth)-1;
$preYear = $this->currentMonth==1?intval($this->currentYear)-1:$this->currentYear;
return
'<div class="header">'.
'<a class="prev" href="'.$this->naviHref.'?month='.sprintf('%02d',$preMonth).'&year='.$preYear.'">← '.$preMonth.' 月</a>'.
'<span class="title">'.date('Y 年 n 月',strtotime($this->currentYear.'-'.$this->currentMonth.'-1')).'</span>'.
'<a class="next" href="'.$this->naviHref.'?month='.sprintf("%02d", $nextMonth).'&year='.$nextYear.'">'.$nextMonth.' 月 →</a>'.
'</div>';
}
private function _createLabels(){
$content='';
foreach($this->dayLabels as $index=>$label){
$content.='<li class="'.($label==6?'end title':'start title').' title">'.$label.'</li>';
}
return $content;
}
private function _weeksInMonth($month=null,$year=null){
if( null==($year) ) {
$year = date("Y",time());
}
if(null==($month)) {
$month = date("m",time());
}
// find number of days in this month
$daysInMonths = $this->_daysInMonth($month,$year);
$numOfweeks = ($daysInMonths%7==0?0:1) + intval($daysInMonths/7);
$monthEndingDay= date('N',strtotime($year.'-'.$month.'-'.$daysInMonths));
$monthStartDay = date('N',strtotime($year.'-'.$month.'-01'));
if($monthEndingDay<$monthStartDay){
$numOfweeks++;
}
return $numOfweeks;
}
private function _daysInMonth($month=null,$year=null){
if(null==($year))
$year = date("Y",time());
if(null==($month))
$month = date("m",time());
return date('t',strtotime($year.'-'.$month.'-01'));
}
}
$calendar = new Calendar();
echo $calendar->show();
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