php日历代码(附演示效果)

<?php
function build_calendar($month,$year,$dateArray) {
 // 日历表头，星期天开始一直到星期六
 $daysOfWeek = array('S','M','T','W','T','F','S');
 
 // 本月第一天的位置
 $firstDayOfMonth = mktime(0,0,0,$month,1,$year);
 
 // 获取本月天数
 $numberDays = date('t',$firstDayOfMonth);
 
 // 获取本月第一天
 $dateComponents = getdate($firstDayOfMonth);
 
 // 获取月份的英文单词
 $monthName = $dateComponents['month'];
 $dayOfWeek = $dateComponents['wday'];
 
 // 月历表头
 $calendar = "<table class='calendar'>";
 $calendar .= "<caption>$monthName $year</caption>";
 $calendar .= "<tr>";
 
 // 星期表头
 foreach($daysOfWeek as $day) {
$calendar .= "<th class='header'>$day</th>";
 }
 
// 开始输出日历
// 初始化天数计数器，从1号开始
$currentDay = 1;
$calendar .= "</tr><tr>";
// 使用变量 $dayOfWeek 可以保证一周七天精确输出
 
if ($dayOfWeek > 0) {
$calendar .= "<td colspan='$dayOfWeek'>&nbsp;</td>";
}
 
$month = str_pad($month, 2, "0", STR_PAD_LEFT);
 while ($currentDay <= $numberDays) {
 
// 7天一行，7天一到新增一行
 
if ($dayOfWeek == 7) {
$dayOfWeek = 0;
$calendar .= "</tr><tr>";
}
 
$currentDayRel = str_pad($currentDay, 2, "0", STR_PAD_LEFT);
$date = "$year-$month-$currentDayRel";
$calendar .= "<td class='day' rel='$date'>$currentDay</td>";
 
// 计数器
$currentDay++;
$dayOfWeek++;
}
 
// 最后一行表格的处理，往往最后一行不可能全部填满，需要要空格填充。
 
if ($dayOfWeek != 7) {
$remainingDays = 7 - $dayOfWeek;
$calendar .= "<td colspan='$remainingDays'>&nbsp;</td>";
}
 
$calendar .= "</tr>";
$calendar .= "</table>";
return $calendar;
}
?>

<?php
//php日历
$dateComponents = getdate();
$month = $dateComponents['mon'];
$year = $dateComponents['year'];
echo build_calendar($month,$year,$dateArray);
?>