PHP 制作的日历一份

<style>
*{margin:0;padding:0;list-style-type:none;font-family:"微软雅黑";}
td,th{text-align:center;height:30px;width:40px;line-height:30px;}
th{background:#CCCCCC;}
.week{background:#FFCC33;}
table{border:1px solid #06F;background:#0CF;}
</style>
<?php
header("content-type:text/html;charset=utf-8");
class Calendar
{
private $year;
private $month;
private $day_week;
private $start = 1970;
private $stop = 2036;
private $weeks = array("日", "一", "二", "三", "四", "五", "六");

private $months = array("01" => "一月", "02" => "二月", "03" => "三月",
"04" => "四月", "05" => "五月", "06" => "六月", "07" => "七月", "08" => "八月",
"09" => "九月", "10" => "十月", "11" => "十一月", "12" => "十二月");
function __construct(){
$this->year=isset($_POST['year']) ? $_POST['year'] : date("Y");
$this->month=isset($_POST['month']) ? $_POST['month'] : date("m");
$this->day_week=date("w", mktime(0, 0, 0, $this->month, 1, $this->year));
}
private function getymd(){
echo "<form method='post'><th colspan='2'><select name='year' onchange='this.form.submit()'>";
for($i=$this->start;$i<=$this->stop;$i++){
if (strcmp($i, $this->year) == 0) {
$select = "selected style='background-color:#c0c0c0'";
} else {
$select = "";
}
echo "<option value='".$i."' $select>".$i."</option>";
}
echo "</select></th>";
echo "<th colspan='3'>".$this->year."年".$this->month."月".date("d",time()+3600*8)."</th>";
echo "<th colspan='2'><select name='month' onchange='this.form.submit()'>";
foreach($this->months as $k=>$v){
if (strcmp($k, $this->month) == 0) {
$select = "selected style='background-color:#c0c0c0'";
} else {
$select = "";
}
echo "<option value='".$k."' $select>".$v."</option>";
}
echo "</select></th></form>";
}
private function getweek(){
echo "<tr>";
foreach($this->weeks as $v){
echo "<td class='week'>".$v."</td>";
}
echo "<tr>";
}
private function getdates(){
echo "<tr>";
for($i=0; $i<$this->day_week; $i++){
echo "<td> </td>";
}
for($j=1; $j <= date("t", mktime(0, 0, 0, $this->month, 1, $this->year)); $j++){
$i++;
if($j == date("d")){
echo "<td style='background:red'>".$j."</td>";
}else{
echo "<td style='background:green'>".$j."</td>";
}
if($i%7 == 0){
echo "</tr>";
}
}
while($i%7 != 0){
echo "<td> </td>";
$i++;
}
}
function run(){
echo "<table>";
$this->getymd();
$this->getweek();
$this->getdates();
echo "</table>";
}
}
$d = new Calendar();
$d->run();
?>