使用PHP实现万年历功能的要点:
得到当前要处理的月份总共有多少天$days,得到当前要处理的月份的一号是星期几$dayofweek,$days的作用:知道要处理的月份共有多少天,就可以通过循环输出天数了,$dayofweek的作用:只有知道每个月的1号是星期几,才能知道在输出天数之前需要输出多少空格(空白).
PHP完整实例代码如下:
- <?php
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-
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- class Calendar{
- protected $_table;
- protected $_currentDate;
- protected $_year;
- protected $_month;
- protected $_days;
- protected $_dayofweek;
-
-
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- public function __construct()
- {
- $this->_table="";
- $this->_year = isset($_GET["y"])?$_GET["y"]:date("Y");
- $this->_month = isset($_GET["m"])?$_GET["m"]:date("m");
- if ($this->_month>12){
- $this->_month=1;
- $this->_year++;
- }
- if ($this->_month<1){
- $this->_month=12;
- $this->_year--;
- }
- $this->_currentDate = $this->_year.'年'.$this->_month.'月份';
- $this->_days = date("t",mktime(0,0,0,$this->_month,1,$this->_year));
- $this->_dayofweek = date("w",mktime(0,0,0,$this->_month,1,$this->_year));
- }
-
-
-
- protected function _showTitle()
- {
- $this->_table="<table><thead><tr align='center'><th colspan='7'>".$this->_currentDate."</th></tr></thead>";
- $this->_table.="<tbody><tr>";
- $this->_table .="<td style='color:red'>星期日</td>";
- $this->_table .="<td>星期一</td>";
- $this->_table .="<td>星期二</td>";
- $this->_table .="<td>星期三</td>";
- $this->_table .="<td>星期四</td>";
- $this->_table .="<td>星期五</td>";
- $this->_table .="<td style='color:red'>星期六</td>";
- $this->_table.="</tr>";
- }
-
-
-
-
- protected function _showDate()
- {
- $nums=$this->_dayofweek+1;
- for ($i=1;$i<=$this->_dayofweek;$i++){
- $this->_table.="<td> </td>";
- }
- for ($i=1;$i<=$this->_days;$i++){
- if ($nums%7==0){
- $this->_table.="<td>$i</td></tr><tr>";
- }else{
- $this->_table.="<td>$i</td>";
- }
- $nums++;
- }
- $this->_table.="</tbody></table>";
- $this->_table.="<h3><a href='?y=".($this->_year)."&m=".($this->_month-1)."'>上一月</a> ";
- $this->_table.="<a href='?y=".($this->_year)."&m=".($this->_month+1)."'>下一月</a></h3>";
- }
-
-
-
- public function showCalendar()
- {
- $this->_showTitle();
- $this->_showDate();
- echo $this->_table;
- }
- }
- $calc=new Calendar();
- $calc->showCalendar();
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