1、new一個Calendar類
2、初始化兩個下拉框中的數據,年份與月份
3、初始化要搜索的年份和月份
4、計算得出日歷中每一天的數據信息,包括css、天數
<?php    require_once 'calendar.php';    $util = new Calendar();    $years = array(2012, 2013, 2014, 2015, 2016);//年份選擇自定義    $months = array(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12);//月份數組    //獲取post的年份數據    if(empty($_POST['ddlYear'])) {        $year = date('Y');    }else {        $year = $_POST['ddlYear'];    }    //獲取post的月份數據    if(empty($_POST['ddlMonth'])) {        $month = date('n');    }else {        $month = $_POST['ddlMonth'];    }    $calendar = $util->threshold($year, $month);//獲取各個邊界值    $caculate = $util->caculate($calendar);//計算日歷的天數與樣式    $draws = $util->draw($caculate);//畫表格,設置table中的tr與td?>二、html展示1、休息天的背景色是不同的,不是當前搜索年月的天數字體顏色也是不同的
2、div中做初始化年份與月份的下拉框的操作,并選中當前要搜索的年月
3、數據已計算好,哪個td屬于哪個tr也已做好,直接將table打印出來即可
  <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類1、threshold方法,生成日歷的各個邊界值
1)計算這個月總天數
2)計算這個月第一天與最后一天,各是星期幾
3)計算日歷中的第一個日期與最后一個日期
  /**     * @deprecated 生成日歷的各個邊界值     * @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);        //取得天數          $days = date('t', $firstDay);        //取得第一天是星期幾        $firstDayOfWeek = date('N', $firstDay);        //獲得最后一天是星期幾        $lastDayOfWeek = date('N', $lastDay);                //上一個月最后一天        $lastMonthDate = strtotime('-1 day', $firstDay);        $lastMonthOfLastDay = date('d', $lastMonthDate);        //下一個月第一天        $nextMonthDate = strtotime('+1 day', $lastDay);        $nextMonthOfFirstDay = strtotime('+1 day', $lastDay);                //日歷的第一個日期        if($firstDayOfWeek == 7)            $firstDate = $firstDay;        else             $firstDate = strtotime('-'. $firstDayOfWeek .' day', $firstDay);        //日歷的最后一個日期        if($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,計算日歷的天數與樣式
1)將上個月的天數計算出來,本月第一天的星期不是星期天的話,就需要根據上個月的最后一天計算
2)將本月的天數遍歷出來,如果是休息天就加上特殊的css樣式
3)將下個月的天數計算出來,分三種情況,星期日、星期六和工作日
  /**     * @author Pwstrick   * @param array $calendar 通過threshold方法計算后的數據     * @deprecated 計算日歷的天數與樣式     */    function caculate($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'];//上個月的最后一天        $year = $calendar['year'];        $month = $calendar['month'];                $dates = array();        if($firstDayOfWeek != 7) {            $lastDays = array();            $current = $lastMonthOfLastDay;//上個月的最后一天            for ($i = 0; $i < $firstDayOfWeek; $i++) {                array_push($lastDays, $current);//添加上一個月的日期天數                $current--;            }            $lastDays = array_reverse($lastDays);//反序            foreach ($lastDays as $index => $day) {                array_push($dates, array('day' => $day, 'tdclass' => ($index ==0 ?'rest':''), 'pclass' => 'outter'));            }        }                //本月日歷信息        for ($i = 1; $i <= $days; $i++) {            $isRest = $this->_checkIsRest($year, $month, $i);            //判斷是否是休息天            array_push($dates, array('day' => $i, 'tdclass' => ($isRest ?'rest':''), 'pclass' => ''));        }                //下月日歷信息        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 $dates;    }3、draw方法,畫表格,設置table中的tr與td
1)數據將要用table標簽來顯示,所以這里要將各個tr下面的td排列好
2)$index % 7 == 0 計算表格每行的第一列
3)$index % 7 == 6 || $index == ($length-1) 計算每行的最后一列,或$caculate的最后一個數據
4)將中間行添加到$tr中,就是每一行的array
  /**     * @author Pwstrick     * @param array $caculate 通過caculate方法計算后的數據     * @deprecated 畫表格,設置table中的tr與td     */    function draw($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);//添加到返回的數據中                $tr = array();//清空數組列表            }else {                array_push($tr, $date);            }        }        return $result;    }demo下載:
http://www.it165.net/uploadfile/files/2014/0926/calendar.rar
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