月历

<?php

//万年历

//第一个参数  这个月有多少天

//这个月的1号是星期几

function wannianli($days,$startday){

if($days<1||$days>31){

echo "days 不能大于31 或者小于1";

exit;

}

//Monday、Tuesday、Wednesday、Thursday、Friday、Saturday、Sunday。”

if($startday<0 ||$startday>6){

echo "startday 只能是 0-6 的整数";

exit;

}

$str1="<tr>".str_repeat("<td></td>",$startday);

$str2="";

for($i=1;$i<=7-$startday;$i++){

$str2.="<td>{$i}</td>";

}

$str1.=$str2;

$str1.="</tr>";

$str3="";

for($j=7-$startday+1;$j<$days;$j+=7){

$j0=$j>$days?"":$j;

$j1=$j+1>$days?"":$j+1;

$j2=$j+2>$days?"":$j+2;

$j3=$j+3>$days?"":$j+3;

$j4=$j+4>$days?"":$j+4;

$j5=$j+5>$days?"":$j+5;

$j6=$j+6>$days?"":$j+6;

$str3.="<tr><td>".($j)."</td><td>".($j1)."</td><td>".($j2)."</td><td>".($j3)."</td><td>".($j4)."</td><td>".($j5)."</td><td>".($j6)."</td></tr>";

}

echo "<table width='800' border='1' cellpading=0><tr><th>Monday</th><th>Tuesday</th><th>Wednesday</th><th>Thursday</th><th>Friday</th><th>Saturday</th><th>Sunday</th></tr>";

echo $str1.$str3;

echo "</table>";

}

wannianli(28,0);

?>