////判断$Year和$Month是否为空,如果为空就获取系统当前日期,否则用$_GET获取

$Year=empty($_GET[Year])?date("Y"):$_GET["Year"];

$Month=empty($_GET[Month])?date("m"):$_GET["Month"];

////获取当前日期////

$Today=date("Ymj");

////初始化日期数组////

$Maxday=array("1","2","3","4","5","6","7","8","9","10","11","12","13","14","15","16","17","18","19","20",

"21","22","23","24","25","26","27","28","29","30","31");

$Maxday_count=count($Maxday);

////初始化星期数组////

$Weekday=array("<fontcolor=red>Sun</font>","Mon","Tue","Wed","Thu","Fri","<fontcolor=red>Sat</font>");

$Weekday_count=count($Weekday);

$daynum=0;

$space="<td></td>";

$col=0;

////打印表格头部////

?>

<formaction="calendar.php"method="post"name="linked">

<table><tr><tdcolspan=3align=center><ahref="?Year=<?phpif($Year-1>1900)echo$Year-1;elseecho$Year;?>&Month=<?phpecho$Month?>"onClick="javascript:document.linked.submit();"name="Year"><<</a><?phpecho$Year?><ahref="?Year=<?phpif($Year+1<2999)echo$Year+1;elseecho$Year;?>&Month=<?phpecho$Month?>"onClick="javascript:document.linked.submit();"name="Year">>></a></td>

<td></td><tdcolspan=3align=center><ahref="?Year=<?phpecho$Year?>&Month=<?phpif($Month-1>0)if($Month-1<10)echo"0".($Month-1);elseecho$Month-1;elseecho$Month;?>"onClick="javascript:document.linked.submit();"name="Month"><<</a><?phpecho$Month;?><ahref="?Year=<?phpecho$Year?>&Month=<?phpif($Month+1<13)if($Month+1<10)echo"0".($Month+1);elseecho($Month+1);elseecho$Month;?>"onClick="javascript:document.linked.submit();"name="Month">>></a></td></tr><tr><tdcolspan="8"></td></tr><tr>

<?php

////打印星期列表////

while(list(,$Weekvalue)=each($Weekday))

echo"<tdalign=center>".$Weekvalue."</td>";

echo"</tr>";

////打印日期列表////

//当月份为4,6,9,11的时候,从数组末尾删除一个值,也就是删除31这个值.

if($Month==4or$Month==6or$Month==9or$Month==11)

{

array_pop($Maxday);

$Maxday_count--;

}

//先判断月份是否为2月,如果是的话再判断年份是否为闰年,如果是的话就从数组尾部移除2个值,否则就移除3个值.

if($Month==2)

{

if($Year%4==0)

{

array_pop($Maxday);

array_pop($Maxday);

$Maxday_count-=2;

}

else

{

array_pop($Maxday);

array_pop($Maxday);

array_pop($Maxday);

$Maxday_count-=3;

}

}

////打印日期////

while($daynum<$Maxday_count)

{

echo"<tr>";

while(list($colnum,$Dayvalue)=each($Maxday))

{

//判断当前日期为一星期中的哪一天

$DayWeek=date("w",strtotime($Year."-".$Month."-".$Dayvalue));

//当当前日期处于第1个,也就是每个月的第1天的时候,在它前面补上相应的空格子

if($Dayvalue==1)

for($i=0;$i<$DayWeek;$i++)

echo$space;//打印每个月空出的几个格子

$daynum++;

//当打印日期的时候与当前日期字符串进行比较,如果相等就将字体标为红色.

if($Year.$Month.$Dayvalue==$Today)

{

$u1="<b><u>";

$u2="</b></u>";

}

else

{

$u1="";

$u2="";

}

if($DayWeek==0or$DayWeek==6)

$color="red";

else

$color="black";

echo"<tdalign=center><fontcolor=".$color.">".$u1.$Dayvalue.$u2."</font></td>";

//用本周第几天这个值加1,如果是7的倍数就换行退出此轮循环(换行打印)

if(($DayWeek+1)%7==0)

{

$col++;

break;

}

}

echo"</tr>";

}

?>

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