PHP.13-日历类实现

日历类实现

1、输出星期

calendar.class.php

 <?php
     class Calendar{

         function out(){//输出表格
             echo '<table align="center">';
             $this->weeksList();　　　　　　　　//输出星期
                     echo '</table>';
         }
         private function weeksList(){

             $week=array('日','一','二','三','四','五','六');
             echo '<tr>';
             for($i=0;$i<count($week);$i++)
                 echo '<th class="fontb">'.$week[$i].'</th>';
             echo '</tr>';
         }
           ?>

index.php

 <style>　　　　　　　　　　　　//样式
     table {
         border:1px solid #050;    //边框，050:绿色
     }
     .fontb {
         color:white;
         background:blue;
     }

     th {
         width=30px;height=30px;
     }
 </style>
 <?php
     include "calendar.class.php";

     $calendar=new Calendar;
     $calendar->out();
 ?

2、输出日期

calendar.class.php

 <?php
     class Calendar{
         private $year;
         private $month;
         private $start_weekday;    //    当月的第一天是周几
         private $days;//当前月有几天

         function __construct(){
             $this->year=date("Y");
             $this->month=date("m");

             $this->start_weekday=date("w",mktime(0,0,0,$this->month,1,$this->year));
             $this->days=date("t",mktime(0,0,0,$this->month,1,$this->year));
         }

         function out(){//输出表格
             echo '<table align="center">';
             $this->weeksList();
             $this->daysList();
             echo '</table>';
         }
         private function weeksList(){

             $week=array('日','一','二','三','四','五','六');
             echo '<tr>';
             for($i=0;$i<count($week);$i++)
                 echo '<th class="fontb">'.$week[$i].'</th>';
             echo '</tr>';
         }
         private function daysList(){
             echo '<tr>';
             for($j=0;$j<$this->start_weekday;$j++)
                 echo '<td>&nbsp;</td>';        //输出空格

             for($k=1;$k<=$this->days;$k++){
                 $j++;
                 if($k==date('d'))        //当前天显示颜色
                     echo '<td class="fontb">'.$k.'</td>';
                 else
                     echo '<td>'.$k.'</td>';
                 if ($j%7==0)
                     echo '</tr><tr>';
             }
             echo '</tr>';
         }
     }
 ?>

test.php

 <style>
     table {
         border:1px solid #050;
     }
     .fontb {
         color:white;
         background:blue;
     }

     th {
         width=30px;
     }
     td,th {            //使显示居中
         height=30px;
         text-align:center;
     }
 </style>
 <?php
     include "calendar.class.php";

     $calendar=new Calendar;
     $calendar->out();
 ?>

3、

calendar.class.php

 <?php
     class Calendar{
         private $year;
         private $month;
         private $start_weekday;    //    当月的第一天是周几
         private $days;//当前月有几天

         function __construct(){
             $this->year=isset($_GET["year"])?htmlspecialchars($_GET["year"]):date("Y");
             $this->month=isset($_GET["month"])?htmlspecialchars($_GET["month"]):date("m");

             $this->start_weekday=date("w",mktime(0,0,0,$this->month,1,$this->year));
             $this->days=date("t",mktime(0,0,0,$this->month,1,$this->year));
         }

         function out(){//输出表格
             echo '<table align="center">';
             $this->chageDate();
             $this->weeksList();
             $this->daysList();
             echo '</table>';
         }

         private function weeksList(){

             $week=array('日','一','二','三','四','五','六');
             echo '<tr>';
             for($i=0;$i<count($week);$i++)
                 echo '<th class="fontb">'.$week[$i].'</th>';
             echo '</tr>';
         }

         private function daysList(){
             echo '<tr>';
             for($j=0;$j<$this->start_weekday;$j++)
                 echo '<td>&nbsp;</td>';        //输出空格

             for($k=1;$k<=$this->days;$k++){
                 $j++;
                 if($k==date('d'))        //当前天显示颜色
                     echo '<td class="fontb">'.$k.'</td>';
                 else
                     echo '<td>'.$k.'</td>';
                 if ($j%7==0)
                     echo '</tr><tr>';
             }

             //后面几个空格
             while($j%7!==0){
                 echo '<td>&nbsp;</td>';
                 $j++;
             }
             echo '</tr>';
         }

         private function prevYear($year,$month){
             $year=$year-1;
             if($year<1970)
                 $year=1970;
             return "year={$year}&month={$month}";
         }
         private function prevMonth($year,$month){
             if($month==1){
                 $year=$year-1;
                 $month=12;
                 if($year<1970)
                     $year=1970;
             }else{
                 $month--;
             }

             return "year={$year}&month={$month}";
         }
         private function nextYear($year,$month){
             $year=$year+1;
             if($year>2038)
                 $year=2038;
             return "year={$year}&month={$month}";
         }
         private function nextMonth($year,$month){
             if($month=12){
                 $year=$year+1;
                 $month=1;
                 if($year>2038)
                     $year=2038;
             }else{
                 $month++;
             }
             return "year={$year}&month={$month}";
         }

         private function chageDate(){
             echo '<tr>';
             echo '<td><a href="?'.$this->prevYear($this->year,$this->month).'">'.'<<'.'</a></td>';
             echo '<td><a href="?'.$this->prevMonth($this->year,$this->month).'">'.'<'.'</a></td>';
             echo '<td colspan="3">'.$this->year.'年'.$this->month.'月'.'</td>';
             echo '<td><a href="?'.$this->nextMonth($this->year,$this->month).'">'.'>'.'</a></td>';
             echo '<td><a href="?'.$this->nextYear($this->year,$this->month).'">'.'>>'.'</a></td>';
             echo '</tr>';
         }
     }
 ?>

4、增加年月选择下拉列表　　*

calendar.calss.php

<?php
    class Calendar{
        private $year;
        private $month;
        private $start_weekday;    //    当月的第一天是周几
        private $days;//当前月有几天

        function __construct(){
            $this->year=isset($_GET["year"])?htmlspecialchars($_GET["year"]):date("Y");
            $this->month=isset($_GET["month"])?htmlspecialchars($_GET["month"]):date("m");

            $this->start_weekday=date("w",mktime(0,0,0,$this->month,1,$this->year));
            $this->days=date("t",mktime(0,0,0,$this->month,1,$this->year));
        }

        function out(){//输出表格
            echo '<table align="center">';
            $this->chageDate("text.php");
            $this->weeksList();
            $this->daysList();
            echo '</table>';
        }

        private function weeksList(){

            $week=array('日','一','二','三','四','五','六');
            echo '<tr>';
            for($i=0;$i<count($week);$i++)
                echo '<th class="fontb">'.$week[$i].'</th>';
            echo '</tr>';
        }

        private function daysList(){
            echo '<tr>';
            for($j=0;$j<$this->start_weekday;$j++)
                echo '<td>&nbsp;</td>';        //输出空格

            for($k=1;$k<=$this->days;$k++){
                $j++;
                if($k==date('d'))        //当前天显示颜色
                    echo '<td class="fontb">'.$k.'</td>';
                else
                    echo '<td>'.$k.'</td>';
                if ($j%7==0)
                    echo '</tr><tr>';
            }

            //后面几个空格
            while($j%7!==0){
                echo '<td>&nbsp;</td>';
                $j++;
            }
            echo '</tr>';
        }

        private function prevYear($year,$month){
            $year=$year-1;
            if($year<1970)
                $year=1970;
            return "year={$year}&month={$month}";
        }
        private function prevMonth($year,$month){
            if($month==1){
                $year=$year-1;
                $month=12;
                if($year<1970)
                    $year=1970;
            }else{
                $month--;
            }

            return "year={$year}&month={$month}";
        }
        private function nextYear($year,$month){
            $year=$year+1;
            if($year>2038)
                $year=2038;
            return "year={$year}&month={$month}";
        }
        private function nextMonth($year,$month){
            if($month=12){
                $year=$year+1;
                $month=1;
                if($year>2038)
                    $year=2038;
            }else{
                $month++;
            }
            return "year={$year}&month={$month}";
        }

        private function chageDate($url=""){
            echo '<tr>';
            echo '<td><a href="?'.$this->prevYear($this->year,$this->month).'">'.'<<'.'</a></td>';
            echo '<td><a href="?'.$this->prevMonth($this->year,$this->month).'">'.'<'.'</a></td>';

            echo '<td colspan="3">';
            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++){
                $selected1= ($sm==$this->month)? "selected" : "";
                echo '<option '.$selected1.' value="'.$sm.'">'.$sm.'</option>';
            }
            echo '</select>';
            echo '</form>';
            echo '</td>';

            echo '<td><a href="?'.$this->nextMonth($this->year,$this->month).'">'.'>'.'</a></td>';
            echo '<td><a href="?'.$this->nextYear($this->year,$this->month).'">'.'>>'.'</a></td>';
            echo '</tr>';
        }
    }
?>

test.php

<style>
    table {
        border:1px solid #050;
    }
    .fontb {
        color:white;
        background:blue;
    }

    th {
        width=30px;
    }
    td,th {            //使显示居中
        height=30px;
        text-align:center;
    }
    form {
        margin:0px;
        padding:0px;
    }
</style>
<?php
    include "calendar.class.php";

    $calendar=new Calendar;
    $calendar->out();
?>