php简单的日历程序代码
PHP提供了date()函数,该函数提供了丰富的日期处理功能,现在需要获得的数据有两个,第一个是当月的总天数,第二个是该月的第一天所在星期中的第几天,数字表示0(表示星期天)到6(表示星期六).
通过date()函数可以很容易获得上面的数据,代码如下:
<?php $month = $_GET['m']?$_GET['m']:date(‘n’); $year = $_GET['y']?$_GET['y']:date(‘Y’); $start_week = date(‘w’,mktime(0,0,0,$month,1,$year)); $day_num = date(‘t’,mktime(0,0,0,$month,1,$year)); $end = false; ?> <table> <tr> <td>星期日</td><td>星期一</td><td>星期二</td><td>星期三</td><td>星期四</td><td>星期五</td><td>星期六</td> </tr> <tr> <?php for($i = 0; $i<$start_week; $i++) { echo “<td></td>”; } $j=1; while($j<=$day_num) { echo “<td>$j</td>”; $week = ($start_week+$j-1)%7; if($week ==6){ echo “nt</tr>n”; if($j != $day_num) echo “t<tr>ntt”; else $end = true; } $j++; } while($week%7 != 6) { echo “<td></td>”; $week++; } if(!$end) echo “n</tr>”; ?> </table>
高级一点类
<?php class Calendar { private $year; private $month; private $weeks = array('日','一','二','三','四','五','六'); function __construct($options = array()) { $this->year = date('Y'); $this->month = date('m'); $vars = get_class_vars(get_class($this)); foreach ($options as $key=>$value) { if (array_key_exists($key, $vars)) { $this->$key = $value; } } } function display() { echo '<table class="calendar">'; $this->showChangeDate(); $this->showWeeks(); $this->showDays($this->year,$this->month); echo '</table>'; } private function showWeeks() { echo '<tr>'; foreach($this->weeks as $title) { echo '<th>'.$title.'</th>'; } echo '</tr>'; } private function showDays($year, $month) { $firstDay = mktime(0, 0, 0, $month, 1, $year); $starDay = date('w', $firstDay); $days = date('t', $firstDay); echo '<tr>'; for ($i=0; $i<$starDay; $i++) { echo '<td> </td>'; } for ($j=1; $j<=$days; $j++) { $i++; if ($j == date('d')) { echo '<td class="today">'.$j.'</td>'; } else { echo '<td>'.$j.'</td>'; } if ($i % 7 == 0) { echo '</tr><tr>'; } } echo '</tr>'; } private function showChangeDate() { $url = basename($_SERVER['PHP_SELF']); echo '<tr>'; echo '<td><a href="?'.$this->preYearUrl($this->year,$this->month).'">'.'<<'.'</a></td>'; echo '<td><a href="?'.$this->preMonthUrl($this->year,$this->month).'">'.'<'.'</a></td>'; echo '<td colspan="3"><form>'; echo '<select name="year" onchange="window.location=''.$url.'?year='+this.options[selectedIndex].value+'&month='.$this->month.''">'; for($ye=1970; $ye<=2038; $ye++) { $selected = ($ye == $this->year) ? 'selected' : ''; echo '<option '.$selected.' value="'.$ye.'">'.$ye.'</option>'; } echo '</select>'; echo '<select name="month" onchange="window.location=''.$url.'?year='.$this->year.'&month='+this.options[selectedIndex].value+''">'; for($mo=1; $mo<=12; $mo++) { $selected = ($mo == $this->month) ? 'selected' : ''; echo '<option '.$selected.' value="'.$mo.'">'.$mo.'</option>'; } echo '</select>'; echo '</form></td>'; echo '<td><a href="?'.$this->nextMonthUrl($this->year,$this->month).'">'.'>'.'</a></td>'; echo '<td><a href="?'.$this->nextYearUrl($this->year,$this->month).'">'.'>>'.'</a></td>'; echo '</tr>'; } private function preYearUrl($year,$month) { $year = ($this->year <= 1970) ? 1970 : $year - 1 ; return 'year='.$year.'&month='.$month; } private function nextYearUrl($year,$month) { $year = ($year >= 2038)? 2038 : $year + 1; return 'year='.$year.'&month='.$month; } private function preMonthUrl($year,$month) { if ($month == 1) { $month = 12; $year = ($year <= 1970) ? 1970 : $year - 1 ; } else { $month--; } return 'year='.$year.'&month='.$month; } private function nextMonthUrl($year,$month) { if ($month == 12) { $month = 1; $year = ($year >= 2038) ? 2038 : $year + 1; }else{ $month++; } return 'year='.$year.'&month='.$month; } }
调用方法
<?php $params = array(); if (isset($_GET['year']) && isset($_GET['month'])) { $params = array( 'year' => $_GET['year'], 'month' => $_GET['month'], ); } $params['url'] = 'demo.php'; require_once 'calendar.class.php'; ?> <html> <head> <title>日历demo</title> <meta http-equiv="Content-Type" content="text/html" charset="UTF-8" /> <style type="text/css"> table.calendar { border: 1px solid #050; } .calendar th, .calendar td { width:30px; text-align:center; } .calendar th { background-color:#050; color:#fff; } .today{ color:#fff; background-color:#050; } </style> </head> <body> <div style="align:center"> <?php $cal = new Calendar($params); $cal->display(); ?> </div> </body> </html>
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