php日歷源代碼

php日歷是一個很簡單但很實用的函數，如果打算自己寫網站源代碼的朋友可以看看。筆者沒有添加樣式，盡量保持代碼的簡潔，如果需要美化，可自行添加css代碼^_^。輸出的效果如下：

<?php

function build_calendar($month,$year,$dateArray) {
// 日歷表頭，星期天開始一直到星期六
$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);

// 獲取本月天數
$numberDays = date('t',$firstDayOfMonth);

// 獲取本月第一天
$dateComponents = getdate($firstDayOfMonth);

// 獲取月份的英文單詞
$monthName = $dateComponents['month'];

$dayOfWeek = $dateComponents['wday'];

// 月歷表頭

$calendar = "<table class='calendar'>";
$calendar .= "<caption>$monthName $year</caption>";
$calendar .= "<tr>";

// 星期表頭

foreach($daysOfWeek as $day) {
$calendar .= "<th class='header'>$day</th>";
}

// 開始輸出日歷

// 初始化天數計數器，從1號開始

$currentDay = 1;

$calendar .= "</tr><tr>";

// 使用變量 $dayOfWeek 可以保證一周七天精確輸出

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>";

// 計數器

$currentDay++;
$dayOfWeek++;

}

// 最後一行表格的處理，往往最後一行不可能全部填滿，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

$dateComponents = getdate();
$month = $dateComponents['mon'];
$year = $dateComponents['year'];
echo build_calendar($month,$year,$dateArray);

?>