Make a calendar program

calendar.class.php

<?Phpdate_default_timezone_set (' PRC ');classcalendar{Private $year;//the current year    Private $month;//the current month    Private $day;//the current day    Private $start _weekday;//the first day of the month is the week    Private $days;//The current month altogether how many days    function__construct () {//get the current year        $this->year=isset($_get[' Year '])?$_get[' Year ']:Date("Y"); //get the current month        $this->month=isset($_get[' Month '])?$_get[' Month ']:Date("M"); //get the current day        $this->day=Date("D"); //get the number of days this month        $this->start_weekday=Date("W",Mktime(0,0,0,$this->month,1,$this-Year )); //The first day of the month to get started is the days of the week        $this->days=Date("T",Mktime(0,0,0,$this->month,1,$this-Year )); }    functionout () {Echo' <table align= ' center > '; //call a function that changes the year and month        $this->changedate ("test.php"); //Call Week list        $this-weekslist (); //Call Date list        $this-dayslist (); Echo' </table> '; }    Private functionweekslist () {//Create a week array        $week=Array(' Day ', ' one ', ' two ', ' three ', ' four ', ' five ', ' VI '); Echo' <tr> '; //Output Week Array         for($i= 0;$i<Count($week);$i++){            Echo' <th class= ' fontb ' > '.$week[$i].‘ </th> '; }        Echo' </tr> '; }    Private functiondayslist () {Echo' <tr> '; //output space (currently one months in front of empty)         for($j= 0;$j<$this->start_weekday;$j++){            Echo' <td>&nbsp;</td> '; }        //output this month's date         for($k= 1;$k<$this->days;$k++){            $j++; if($k==$this-Day )Echo' <td class= ' fontb ' > '.$k.‘ </td> '; Else                Echo' <td> '.$k.‘ </td> '; if($j%7==0)                Echo' </tr><tr> '; }        //the space behind         while($j%7!=0){            Echo' <td>&nbsp;</td> '; $j++; }        Echo' </tr> '; }    Private functionPrevyear ($year,$month){        $year=$year-1; if($year< 1970)            $year=1970; return"Year={$year}&month={$month}"; }    Private functionPrevmonth ($year,$month){        if($month==1){            $year=$year-1; if($year< 1970)                $year=1970; $month=1; }Else{            $month--; }        return"Year={$year}&month={$month}"; }    Private functionNextyear ($year,$month){        $year=$year+1; if($year> 2038)            $year=2038; return"Year={$year}&month={$month}"; }    Private functionNextmonth ($year,$month){        if($month==12){            $year=$year+1; if($year> 2038)                $year=2038; $month=12; }Else{            $month++; }        return"Year={$year}&month={$month}"; }    Private functionChangeDate ($url=""){        Echo' <tr> ';        Echo' <td colspan= ' 7 "> '; Echo' <form> '; Echo' <select name= ' year ' onchange= ' window.location=\ '.$url.‘? Year=\ ' +this.options[selectedindex].value+\ ' &month= '.$this->month. ' \ ' > ';  for($sy= 1970;$sy<= 2038;$sy++){            $selected= ($sy==$this->year)? "Selected": ""; Echo' <option '.$selected. ' Value= '.$sy.‘" > '.$sy.‘ </option> '; }        Echo' </select> '; Echo' <select name= ' month ' onchange= ' window.location=\ '.$url.‘? Year= '.$this->year. ' &month=\ ' +this.options[selectedindex].value ' > ';  for($SM= 1;$SM<=12;$SM++){            $selected 1= ($SM==$this->month)? "Selected": ""; Echo' <option '.$selected 1. ' Value= '.$SM.‘" > '.$SM.‘ </option> '; }        Echo' </select> '; Echo' </form> '; Echo' </td> ';        Echo' </tr> '; }}?>

calendar.php

<style>table{Border: 1px solid#050;    }    .fontb{Color:White ; Background:Blue; } th,td{Text-align:Center; Width:30px; Height:30px; } form{margin:0px; Padding:0px; } select{Text-align:Center; }</style><?PHP//include class fileinclude"./calendar.class.php";//To Create a class object$calendar=NewCalendar;$calendar-out ();?>

Make a calendar program