一、计算数据
1、new一个Calendar类
2、初始化两个下拉框中的数据，年份与月份
3、初始化要搜索的年份和月份
4、计算得出日历中每一天的数据信息，包括css、天数
<?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
?>
二、html展示
1、休息天的背景色是不同的，不是当前搜索年月的天数字体颜色也是不同的
2、div中做初始化年份与月份的下拉框的操作，并选中当前要搜索的年月
3、数据已计算好，哪个td属于哪个tr也已做好，直接将table打印出来即可
<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>
三、Calendar类
1、threshold方法，生成日历的各个边界值
1)计算这个月总天数
2)计算这个月第一天与最后一天，各是星期几
3)计算日历中的第一个日期与最后一个日期
/**
* @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
);
}
2、caculate方法，计算日历的天数与样式
1)将上个月的天数计算出来，本月第一天的星期不是星期天的话，就需要根据上个月的最后一天计算
2)将本月的天数遍历出来，如果是休息天就加上特殊的css样式
3)将下个月的天数计算出来，分三种情况，星期日、星期六和工作日
/**
* @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 $dates;
}
3、draw方法，画表格，设置table中的tr与td
1)数据将要用table标签来显示，所以这里要将各个tr下面的td排列好
2)$index % 7 == 0 计算表格每行的第一列
3)$index % 7 == 6 || $index == ($length-1) 计算每行的最后一列，或$caculate的最后一个数据
4)将中间行添加到$tr中，就是每一行的array
/**
* @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;
}