求一个可移植性强一点的分页程序！！！！！！！！！！！！-PHP教程,PHP应用

function multi($num, $perpage, $curr_page, $mpurl) {

$multipage = ;

if($num > $perpage) {

$page = 10;

$offset = 2;

$pages = ceil($num / $perpage);

$from = $curr_page – $offset;

$to = $curr_page + $page – $offset – 1;

if($page > $pages) {

$from = 1;

$to = $pages;

} else {

if($from < 1) {

$to = $curr_page + 1 – $from;

$from = 1;

if(($to – $from) < $page && ($to – $from) < $pages) {

$to = $page;

}

} elseif($to > $pages) {

$from = $curr_page – $pages + $to;

$to = $pages;

if(($to – $from) < $page && ($to – $from) < $pages) {

$from = $pages – $page + 1;

}

}

}

$multipage .= "<a href=\"$mpurl&page=1\">&lt;&lt;</a> ";

for($i = $from; $i <= $to; $i++) {

if($i != $curr_page) {

$multipage .= "<a href=\"$mpurl&page=$i\">[$i]</a> ";

} else {

$multipage .= <u><b>[.$i.]</b></u> ;

}

}

$multipage .= $pages > $page ? " … <a href=\"$mpurl&page=$pages\"> [$pages] &gt;&gt;</a>" : " <a href=\"$mpurl&page=$pages\">&gt;&gt;</a>";

}

return $multipage;

}