教大家制作简单的php日历

<?php require_once 'calendar.php'; $util = new Calendar(); $years = array(2012, 2013, 2014, 2015, 2016);//年份选择自定义 $months = array(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12);//月份数组 //获取post的年份数据 if(empty($_POST['ddlYear'])) {  $year = date('Y'); }else {  $year = $_POST['ddlYear']; } //获取post的月份数据 if(empty($_POST['ddlMonth'])) {  $month = date('n'); }else {  $month = $_POST['ddlMonth']; } $calendar = $util->threshold($year, $month);//获取各个边界值 $caculate = $util->caculate($calendar);//计算日历的天数与样式 $draws = $util->draw($caculate);//画表格，设置table中的tr与td?>

<div style="padding:20px">  <select name="ddlYear">  <?php foreach($years as $data) {?>   <option value="<?php echo $data?>" <?php if($year == $data) echo 'selected="selected"'?>><?php echo $data?></option>  <?php }?>  </select>  <select name="ddlMonth">  <?php foreach($months as $data) {?>   <option value="<?php echo $data?>" <?php if($month == $data) echo 'selected="selected"'?>><?php echo $data?></option>  <?php }?>  </select>  <input type="submit" value="修改"/> </div> <table width="100%" cellspacing="0" class="table_calendar">  <thead class="f14">    <tr>     <td width="16%">日</td>     <td width="14%">一</td>     <td width="14%">二</td>     <td width="14%">三</td>     <td width="14%">四</td>     <td width="14%">五</td>     <td width="14%">六</td>    </tr>  </thead>  <tbody class="f14">   <?php foreach($draws as $draw) {?>    <tr>    <?php foreach($draw as $date) {?>     <td class="<?php echo $date['tdclass']?>">      <p class="<?php echo $date['pclass']?>"><?php echo $date['day']?></p>     </td>    <?php }?>     </tr>   <?php }?>  </tbody> </table>

/**  * @deprecated 生成日历的各个边界值  * @param string $year  * @param string $month  * @return array  */ function threshold($year, $month) {  $firstDay = mktime(0, 0, 0, $month, 1, $year);  $lastDay = strtotime('+1 month -1 day', $firstDay);  //取得天数   $days = date("t", $firstDay);  //取得第一天是星期几  $firstDayOfWeek = date("N", $firstDay);  //获得最后一天是星期几  $lastDayOfWeek = date('N', $lastDay);    //上一个月最后一天  $lastMonthDate = strtotime('-1 day', $firstDay);  $lastMonthOfLastDay = date('d', $lastMonthDate);  //下一个月第一天  $nextMonthDate = strtotime('+1 day', $lastDay);  $nextMonthOfFirstDay = strtotime('+1 day', $lastDay);    //日历的第一个日期  if($firstDayOfWeek == 7)   $firstDate = $firstDay;  else    $firstDate = strtotime('-'. $firstDayOfWeek .' day', $firstDay);  //日历的最后一个日期  if($lastDayOfWeek == 6)   $lastDate = $lastDay;  elseif($lastDayOfWeek == 7)    $lastDate = strtotime('+6 day', $lastDay);  else   $lastDate = strtotime('+'.(6-$lastDayOfWeek).' day', $lastDay);    return array(    'days' => $days,     'firstDayOfWeek' => $firstDayOfWeek,     'lastDayOfWeek' => $lastDayOfWeek,    'lastMonthOfLastDay' => $lastMonthOfLastDay,    'firstDate' => $firstDate,    'lastDate' => $lastDate,    'year' => $year,    'month' => $month  ); }

/**  * @author Pwstrick　　　* @param array $calendar 通过threshold方法计算后的数据  * @deprecated 计算日历的天数与样式  */ function caculate($calendar) {  $days = $calendar['days'];  $firstDayOfWeek = $calendar['firstDayOfWeek'];//本月第一天的星期  $lastDayOfWeek = $calendar['lastDayOfWeek'];//本月最后一天的星期  $lastMonthOfLastDay = $calendar['lastMonthOfLastDay'];//上个月的最后一天  $year = $calendar['year'];  $month = $calendar['month'];    $dates = array();  if($firstDayOfWeek != 7) {   $lastDays = array();   $current = $lastMonthOfLastDay;//上个月的最后一天   for ($i = 0; $i < $firstDayOfWeek; $i++) {    array_push($lastDays, $current);//添加上一个月的日期天数    $current--;   }   $lastDays = array_reverse($lastDays);//反序   foreach ($lastDays as $index => $day) {    array_push($dates, array('day' => $day, 'tdclass' => ($index ==0 ?'rest':''), 'pclass' => 'outter'));   }  }    //本月日历信息  for ($i = 1; $i <= $days; $i++) {   $isRest = $this->_checkIsRest($year, $month, $i);   //判断是否是休息天   array_push($dates, array('day' => $i, 'tdclass' => ($isRest ?'rest':''), 'pclass' => ''));  }    //下月日历信息  if($lastDayOfWeek == 7) {//最后一天是星期日   $length = 6;  }  elseif($lastDayOfWeek == 6) {//最后一天是星期六   $length = 0;  }else {   $length = 6 - $lastDayOfWeek;  }  for ($i = 1; $i <= $length; $i++) {   array_push($dates, array('day' => $i, 'tdclass' => ($i==$length ?'rest':''), 'pclass' => 'outter'));  }    return $dates; }

　/**  * @author Pwstrick  * @param array $caculate 通过caculate方法计算后的数据  * @deprecated 画表格，设置table中的tr与td  */ function draw($caculate) {  $tr = array();  $length = count($caculate);  $result = array();  foreach ($caculate as $index => $date) {   if($index % 7 == 0) {//第一列    $tr = array($date);   }elseif($index % 7 == 6 || $index == ($length-1)) {    array_push($tr, $date);    array_push($result, $tr);//添加到返回的数据中    $tr = array();//清空数组列表   }else {    array_push($tr, $date);   }  }  return $result; }