/*
 * calendar
 * 소스 : phpschool 박성환
 * http://phpschool.com/bbs2/inc_view.html?id=7631&code=tnt2&start=0&mode=search&field=title&search_name=&operator=and&period=all&category_id=&s_que=%B4%DE%B7%C2
 *
 */
function gs_cal($input_y='',$input_m='',$bo_table='schedule')
{
global $cfg, $gnu_path , $mb_id;

     // 주어진 날짜가 없으면 현재날짜 구하기
       if(!$input_y) $input_y = date('Y',time());
       if(!$input_m) $input_m = date('m',time());
       if(!$input_d) $input_d = date('d',time());

       $weekdate=date('w', mktime(0,0,0,$input_m,1,$input_y));

$currentday = "$input_y$input_m" ;

for($i=28;$i<33;$i++)
 &nbsp; &nbsp; &nbsp; {
 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;$res = checkdate($input_m,$i,$input_y);
 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;if(!$res)
 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;{
 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; $tday = $i;
 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; $i = 33;
 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;}
 &nbsp; &nbsp; &nbsp; }
 &nbsp; &nbsp; &nbsp; $changerow =0;

 &nbsp; &nbsp; &nbsp; echo "<table border=0 cellspacing=0 cellpadding=2 width=100% bgcolor='#DDDDDD' style='font-size:12px; cursor:default'>";
 &nbsp; &nbsp; &nbsp; echo "<tr><td colspan=7 bgcolor='#FFFFFF' align=center> $input_y - $input_m - $input_d </th></tr>";
 &nbsp; &nbsp; &nbsp; echo "<tr bgcolor='#EEEEEE'>
<td bgcolor='#e2cbcb'>일</td>
<td>월</td>
<td>화</td>
<td>수</td>
<td>목</td>
<td>금</td>
<td bgcolor='#cbd5e2'>토</td>
</tr>
<tr bgcolor='#FFFFFF'>
";

 &nbsp; &nbsp; &nbsp; for($i=1; $i < $tday + $weekdate; $i++)
 &nbsp; &nbsp; &nbsp; {
 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;$dispnum = $i - $weekdate;
 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;$changerow += 1;

 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;switch ($changerow % 7) {
case 1 :
$bgc = "bgcolor='#fcf5f5'";
break;
&nbsp;case 0 :
$bgc = "bgcolor='#eff4f9'";
break;
default:
$bgc = "";
break;
}
if($dispnum == $input_d)
$bgc = "bgcolor='#C7E1E7'";

$sql = " select count(0)
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; from $cfg[write_table_prefix]$bo_table
where wr_link1 = '$currentday$dispnum' ";
$result = sql_fetch_array($sql);

if ($result[0] > 0)
{
&nbsp;$dlink ="<a href='{$gnu_path}bbs/gnuboard.php?bo_table=$bo_table' title='$result[0]개의 &nbsp;일정이 있습니다.'><b> ";
}
else
{
if(is_admin($mb_id))
{
$dlink = "<a href='{$gnu_path}bbs/gbform.php?bo_table=$bo_table&link1={$currentday}$dispnum' title='일정등록'>";
&nbsp;}
else
{
$dlink = "<a title='일정없음'>";
}
}
if($dispnum < 1)
echo"<td $bgc>&nbsp;</td>";
 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;else
echo "<td $bgc onMouseOver=this.style.backgroundColor='#FFCC66' onMouseOut=this.style.backgroundColor=''>$dlink<font face=Tahoma size='1' color='#777777'>".$dispnum."</font></b></a></td>";

if(!($changerow % 7)&&($changerow < $tday + $weekdate))
 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;echo "</tr><tr bgcolor='#FFFFFF'>";
 &nbsp; &nbsp; &nbsp; }
 &nbsp; &nbsp; &nbsp; $td_tail = &nbsp;7 - ($changerow % 7);

 &nbsp; &nbsp; &nbsp; if($td_tail != 7)
 &nbsp; &nbsp; &nbsp; {
 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;for($i = 1; $i <= $td_tail; $i++) echo "<td>&nbsp;</td>";
 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;echo "</tr></table>";
 &nbsp; &nbsp; &nbsp; }
}


계시판과 연동 하도록 했지만, 지금 제가 사용하고 있는 그누보드가 2.65이라 괜찮을지 모르겠습니다.
좀더 만진 후에 일정 스킨도 올리겠습니다.
현재로서는 다른 시스템상에서 게시판과 제대로 연동 될지 모르겠군요.