php简单日历实现程序代码

<?php
//剥离日期
date_default_timezone_set("Asia/Harbin");
$riqi=getdate();
$nian=$riqi['year'];
$yue=$riqi['mon'];
$ri=$riqi['mday'];
$hour=$riqi['hours'];
$min=$riqi['minutes'];
$miao=$riqi['seconds'];
//表单判断
if(isset($_GET["yue"])){
 $yue=intval($_GET["yue"]);
}
if(isset($_GET["nian"])){
 $nian=intval($_GET["nian"]);
}
//一个月几天
$tianshu=date('t',mktime(0,0,0,$yue,1,$nian));
//月份第一天周几
$yuez=date('w',mktime(0,0,0,$yue,1,$nian));
$tian=0;
?>
<!-- 打印日历 -->
<table border="1" width="80%">
 <tr>
  <td width="60%">
   <table border="1" width="100%">
    <tr>
     <th colspan="7">日历<?php echo $nian."年".$yue."月"?>&nbsp;现在时间：<?php echo $hour.':'.$min.':'.$miao;?></th>
    <tr>
    <tbody bgcolor="#FF9900">
     <tr>
      <td>日</td>
      <td>一</td>
      <td>二</td>
      <td>三</td>
      <td>四</td>
      <td>五</td>
      <td>六</td>
     </tr>
    </tbody>
    <tbody>
     <?php for($h=1;$h<=6;$h++){?>
      <tr>
      <?php for($l=1;$l<=7;$l++){ ?>
       <td bgcolor="<?php if($tian+1==$ri){echo "#FF6666";}?>" align="center">
        <?php
         if($h*$l<=$yuez && $h==1){
          echo '&nbsp;';
         }elseif($tian<$tianshu){
          echo ++$tian;       
         }else{
          echo '&nbsp;';
         }
        ?>
       </td>
      <?php }?>
      </tr>
     <?php }?>
    </tbody>
   </table>
  </td>
 <!-- 年翻页 -->
  <td>
   <a href ="?nian=<?php echo $nian-1; ?>&yue=<?php echo $yue;?>">上一年</a>
   <a href ="?nian=<?php echo $nian+1; ?>&yue=<?php echo $yue;?>">下一年</a>
   <!-- 月翻页 -->
    <!-- 左翻页 -->
    <a href ="?yue=<?php if($yue-1<=0){echo '12';}else{echo $yue-1;} ?>&nian=<?php echo $nian; ?>">
     <?php
      if($yue-1<=0){
       echo '<'.'12';
       }else{
       echo '<'.($yue-1);
      }
     ?>月
    </a>
    <!-- 右翻页 -->
    <a href ="?yue=<?php if($yue+1>12){echo '1';}else{echo $yue+1;} ?>&nian=<?php echo $nian; ?>">
     <?php
      if($yue+1>12){
       echo '1';
      }else{
       echo $yue+1;
      }?>月&gt;
    </a>
   <!--表单提交-->
   <form action="01.php" method="get">
     <p>年: <input type="text" name="nian" /></p>
     <p>月: <input type="text" name="yue" /></p>
     <input type="submit" value="提交" />
   </form>
  </td>
 </tr>
</table>