Script Membuat Kalender Di PHP

Assalamualaikum Wr Wb...
Selamat datang di blog Agung Pramadipta. udah gak kerasa ini postingan ke 5 saya di blog saya.
Saya Agung Pramadipta mau bagi tips nih cara membuat program kalender menarik dengan PHP
Nih.... ikuti tutorialnya ya....

1. Pastikan program xampp anda dengan posisi ON ya teman :-)
2. Buat file bernama calendar.php di directori C://xampp/htdoc/kalender/calendar.php dan isi script dibawah ini 

     <?php
    class Calendar {
    public function __construct(){
    $this->naviHref = htmlentities($_SERVER['PHP_SELF']);
    }
    /********************* PROPERTY ********************/
    private $dayLabels = array("Mon","Tue","Wed","Thu","Fri","Sat","Sun");
    private $currentYear=0;
    private $currentMonth=0;
    private $currentDay=0;
    private $currentDate=null;
    private $daysInMonth=0;
    private $naviHref= null;
    /********************* PUBLIC **********************/
    /**
    * print out the calendar
    */
    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 $content;
    }
    /********************* PRIVATE **********************/
    /**
    * create the li element for ul
    */
    private function _showDay($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-'.$this->currentDate.'" class="'.($cellNumber%7==1?' start ':($cellNumber%7==0?' end ':' ')).
    ($cellContent==null?'mask':'').'">'.$cellContent.'</li>';
    }
    /**
    * create navigation
    */
    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.'">Prev</a>'.
    '<span class="title">'.date('Y M',strtotime($this->currentYear.'-'.$this->currentMonth.'-1')).'</span>'.
    '<a class="next" href="'.$this->naviHref.'?month='.sprintf("%02d", $nextMonth).'&year='.$nextYear.'">Next</a>'.
    '</div>';
    }
    /**
    * create calendar week labels
    */
    private function _createLabels(){
    $content='';
    foreach($this->dayLabels as $index=>$label){
    $content.='<li class="'.($label==6?'end title':'start title').' title">'.$label.'</li>';
    }
    return $content;
    }


    /**
    * calculate number of weeks in a particular month
    */
    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 $numOfweeks;
    }
    /**
    * calculate number of days in a particular month
    */
    private function _daysInMonth($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'));
    }
    }

3. Lalu yang ke tiga buat file bernama calendar.css pada direktori yang sama seperti no 2 isi scriptnya sebagai berikut

/*******************************Calendar Top Navigation*********************************/
div#calendar{
margin:0px auto;
padding:0px;
width: 602px;
font-family:Helvetica, "Times New Roman", Times, serif;
}
div#calendar div.box{
position:relative;
top:0px;
left:0px;
width:100%;
height:40px;
background-color: green ;
}
div#calendar div.header{
line-height:40px;
vertical-align:middle;
position:absolute;
left:11px;
top:0px;
width:582px;
height:40px;
text-align:center;
}
div#calendar div.header a.prev,div#calendar div.header a.next{
position:absolute;
top:0px;
height: 17px;
display:block;
cursor:pointer;
text-decoration:none;
color:#FFF;
}
div#calendar div.header span.title{
color:#FFF;
font-size:18px;
}

div#calendar div.header a.prev{
left:0px;
}
div#calendar div.header a.next{
right:0px;
}



/*******************************Calendar Content Cells*********************************/
div#calendar div.box-content{
border:1px solid #787878 ;
border-top:none;
}


div#calendar ul.label{
float:left;
margin: 0px;
padding: 0px;
margin-top:5px;
margin-left: 5px;
}
div#calendar ul.label li{
margin:0px;
padding:0px;
margin-right:5px;
float:left;
list-style-type:none;
width:80px;
height:40px;
line-height:40px;
vertical-align:middle;
text-align:center;
color:Green;
font-size: 15px;
background-color: transparent;
}

div#calendar ul.dates{
float:left;
margin: 0px;
padding: 0px;
margin-left: 5px;
margin-bottom: 5px;
}
/** overall width = width+padding-right**/
div#calendar ul.dates li{
margin:0px;
padding:0px;
margin-right:5px;
margin-top: 5px;
line-height:80px;
vertical-align:middle;
float:left;
list-style-type:none;
width:80px;
height:80px;
font-size:25px;
background-color: lightgreen;
color:#000;
text-align:center;
}
:focus{
outline:none;
}
div.clear{
clear:both;
}

4. Lalu yang terakhir buat file bernama index.php pada direktori yang sama isi dengan script

     <html>
    <head>
    <link href="calendar.css" type="text/css" rel="stylesheet" />
    </head>
    <body>
    <?php
    include 'calendar.php';
    $calendar = new Calendar();
    echo $calendar->show();
    ?>
    </body>
    </html>

5. OK jadi deh coba cek di browser anda ketik http://localhost/kalender/index.php dan tampilannya sebagai berikut

Sekian tips dari Agung Pramadipta semoga bermanfaat buat kalian semua See You......