该函数在 ./include/global.func.php 文件中定义。函数原型为:
string multi(int $num, int $perpage, int $curpage, string $mpurl[, int $maxpages[, int $page[, bool $autogoto[, bool $simple]]]])
$num: 总记录数
$perpage: 每页记录数
$curpage: 当前页数
$mpurl: 除页变量外 URL
$maxpages: 最大页面值
function multi($num, $perpage, $curpage, $mpurl, $maxpages = 0, $page = 10, $autogoto = TRUE, $simple = FALSE) {
global $maxpage;
$ajaxtarget = !empty($_GET['ajaxtarget']) ? " ajaxtarget=\"".dhtmlspecialchars($_GET['ajaxtarget'])."\" " : '';
$multipage = '';
$mpurl .= strpos($mpurl, '?') ? '&' : '?';
$realpages = 1;
if($num > $perpage) {
$offset = 2;
$realpages = @ceil($num / $perpage);
$pages = $maxpages && $maxpages < $realpages ? $maxpages : $realpages;
if($page > $pages) {
$from = 1;
$to = $pages;
} else {
$from = $curpage - $offset;
$to = $from + $page - 1;
if($from < 1) {
$to = $curpage + 1 - $from;
$from = 1;
if($to - $from < $page) {
$to = $page;
}
} elseif($to > $pages) {
$from = $pages - $page + 1;
$to = $pages;
}
}
$multipage = ($curpage - $offset > 1 && $pages > $page ? '<a href="'.$mpurl.'page=1"'.$ajaxtarget.'>1 ...</a>' : '').
($curpage > 1 && !$simple ? '<a href="'.$mpurl.'page='.($curpage - 1).'"'.$ajaxtarget.'>‹‹</a>' : '');
for($i = $from; $i <= $to; $i++) {
$multipage .= $i == $curpage ? '<strong>'.$i.'</strong>' :
'<a href="'.$mpurl.'page='.$i.($ajaxtarget && $i == $pages && $autogoto ? '#' : '').'"'.$ajaxtarget.'>'.$i.'</a>';
}
$multipage .= ($curpage < $pages && !$simple ? '<a href="'.$mpurl.'page='.($curpage + 1).'"'.$ajaxtarget.'>››</a>' : '').
($to < $pages ? '<a href="'.$mpurl.'page='.$pages.'"'.$ajaxtarget.'>... '.$realpages.'</a>' : '').
(!$simple && $pages > $page && !$ajaxtarget ? '<kbd><input type="text" name="custompage" size="3" onkeydown="if(event.keyCode==13) {window.location=\''.$mpurl.'page=\'+this.value; return false;}" /></kbd>' : '');
$multipage = $multipage ? '<div>'.(!$simple ? '<em> '.$num.' </em>' : '').$multipage.'</div>' : '';
}
$maxpage = $realpages;
return $multipage;
}
使用:
$pagesize = 20; // 每页记录数
$query = $db->query("SELECT COUNT(*) FROM table");
$amount = $db->result($query, 0); // 查询记录总数
$pagecount = $amount ? (($amount < $pagesize) ? 1 : (($amount % $pagesize) ? ((int)($amount / $pagesize) + 1) : ($amount / $pagesize))) : 0; // 计算总页数
$page = !empty($_GET['page']) ? max(1, intval($_GET['page'])) : 1;
$page = $page > $pagecount ? 1 : $page; // 取得当前页值
$startlimit = ($page - 1) * $pagesize; // 查询起始的偏移量
$query = $db->query("SELECT * FROM table LIMIT {$startlimit}, {$pagesize}"); // 查询记录集
$multipage = multi($amount, $pagesize, $page, 'page.php?get=string', $pagecount); // 显示分页