전체 게시글 랜덤출력

amoa 님 답변 달아드리다가...
하나 올립니다
전체 게시판 불러와서 랜덤으로 출력하는 소스구요..
나머지 수정은 알아서~
질문있음 댓글 남겨주세요

[code]
<?php
$sql_board = "select * from g5_board";
$res_board = mysql_query($sql_board);
$total_recordes = mysql_num_rows($res_board);
for ($j=0; $row_board=sql_fetch_array($res_board); $j++) {

if ($total_recordes-1 == $j) {
$sql_data .= "select * from g5_write_".$row_board[bo_table]." where wr_is_comment=0 ";
} else if ($j == 0){
$sql_data = "select * from g5_write_".$row_board[bo_table]." where wr_is_comment=0 union all " ;
} else {
$sql_data .= "select * from g5_write_".$row_board[bo_table]." where wr_is_comment=0 union all " ;
}
}

$sql_data .= " order by rand() limit 10";
$res_data = mysql_query($sql_data);
for ($i=0; $row=sql_fetch_array($res_data); $i++) {
echo $row[wr_subject]."<br>";
}?>
[/code]