php分页程序paginator程序代码-php教程

<?php
class paginator {
function __construct () {
}
static function render($page_type, array $args = array()) {
$html = '';
switch ($page_type)
{
case '1':
$html = page_1($channel_code, $page_num, $cur_page, $per_group, $base_url, $n, $v);
break;
case '2':
$html = fpage($row_num, $pagesize, $page, $url);
break;
case '3':
break;
default:
$html = page($num, $perpage, $curpage, $mpurl, $hiddenFrom='');
}
return $html;
}
//函数1:根据总页数,当前页,和页分组及url产生分页导航
function page_1($channel_code, $page_num, $cur_page, $per_group, $base_url, $n, $v) {
// 分页函数参数列表(有多少页,当前页,每页多少个 ,链接地址)
$base_url .= strpos($base_url, '?') ? '&' : '?'; //如果有?，则添加&,否则加？
$page_val = "";
if ($page_num < 1) {
return $page_val; //如果小于1,返回空
} elseif ($page_num == 1) {
return $page_val = 1; //如果等于1,返回1
}
//分组
$group_ok = !(($page_num-1) % ($per_group-1)); //没有余数
// 计算一共有多少组
if($group_ok) {
$group_num = ($page_num-1)/($per_group-1);
}else {
$group_num = ceil(($page_num-1) / ($per_group-1));
} //判断当前页是否为一组的最后一个
//组数
$is_last_page = !(($cur_page-1) % ($per_group-1)); //计算当前在的组数
if ($is_last_page) {
$cur_group = ($cur_page-1) / ($per_group-1) + 1;
} else {
$cur_group = ceil(($cur_page-1) / ($per_group-1));
}
// 计算显示的起始页，这个关键
$from = ($cur_group - 1) * ($per_group-1) + 1;
$from = $cur_group <= 1 ? 1 :$from;
$to = $from + $per_group;
$to = $to > $page_num ? $page_num + 1 : $to;
for($a = $from; $a < $to; $a++) {
if ($a != $cur_page) {
//不是当前页
$page_val .= '<li><a href ="' . $base_url . 'channel='.$channel_code.'&n='.$n.'&v='.$v.'&page=' . $a . '">' . $a . '</a></li>';
} else {
//当前页
$page_val .='<li class="current">'. $a .'</li>';
}
}
//上一页下一页首页尾页
$next = $cur_page + 1; //当前页+1
$prev = $cur_page-1; //当前页-1
if ($cur_page != $page_num) {
//当前页不是最后一页
$page_val .= '<span><a href ="' . $base_url . 'channel='.$channel_code.'&n='.$n.'&v='.$v.'&page=' . $next . '">' . '下一页' . '</a></span>';
$page_val .= '<span><a href ="' . $base_url . 'channel='.$channel_code.'&n='.$n.'&v='.$v.'&page=' . $page_num . '">' . '>>' . '</a></span>'; //尾页
}
if ($cur_page != 1){
//不是第一页,加上前面的内容
$page_val = '<span><a href ="' . $base_url . 'channel='.$channel_code.'&n='.$n.'&v='.$v.'&page=' . $prev . '">' . '上一页' . '</a></span>' . $page_val;
$page_val = '<span><a href ="' . $base_url . 'channel='.$channel_code.'&n='.$n.'&v='.$v.'&page=1">' . '<<' . '</a></span>' . $page_val; //首页
}
$page_val = '<ul class="page_nav">'.$page_val.'</ul>';
return $page_val;
}
// 函数2：根据记录数，页列清数，当前页，url年成分页
function fpage($row_num, $pagesize, $page, $url) {
//$page,当前页;$row_num记录总数;$pagesize:每页记录数;$url记录页;
//如果,如果有作数,则取加1
$page_count = $row_num % $pagesize?intval($row_num / $pagesize) + 1:intval($row_num / $pagesize);
if ($page_count == 1) {
$page_string = "第一页|上一页|下一页|尾页";
} else {
//如果不止一页
if ($page == 1) {
//第一页显示
$page_string = " <a href=" . $url . "?page=1>第一页 </a>|上一页| <a href=" . $url . "?page=" . ($page + 1) . ">下一页 </a>| <a href=" . $url . "?page=" . $page_count . ">尾页 </a>";
}
if (($page > 1) and ($page < $page_count)) {
$page_string = " <a href=" . $url . "?page=1>第一页 </a>| <a href=" . $url . "?page=" . ($page-1) . ">上一页 </a>| <a href=" . $url . "?page=" .
($page + 1) . ">下一页 </a>| <a href=" . $url . "?page=" . $page_count . ">尾页 </a>";
}
if ($page == $page_count) {
$page_string = " <a href=" . $url . "?page=1>第一页 </a>| <a href=" . $url . "?page=" . ($page-1) . ">上一页 </a>|下一页| <a href=" . $url . "?page=" . $page_count . ">尾页 </a>";
}
}
$page_str = $page_string . ("," . $page . "/" . $page_count . "页");
echo " <br> <p align=center>" . $page_str . " </p>";
}
/**
* 分页函数
*
* @param int $num:记录总数
* @param int $perpage:每页记录
* @param int $curpage:当前页
* @param string $mpurl:路径url
* @param unknown_type $hiddenFrom
* @return string
*/
function page($num, $perpage, $curpage, $mpurl,$hiddenFrom='') {
$multipage = '';
//恢复
$mpurl .= strpos($mpurl, '?') ? '&' : '?';
if($num > $perpage) {
$page = 10;
$offset = 2;
$pages = @ceil($num / $perpage); //总页数
if($page > $pages) {
$from = 1;
$to = $pages;
} else {
//如果总页数>10
$from = $curpage - $offset; //当前页-2
$to = $from + $page - 1; //当前页+10-3
if($from < 1) {
$to = $curpage + 1 - $from;
$from = 1;
if($to - $from < $page) {
$to = $page;
}
} elseif($to > $pages) {
$from = $pages - $page + 1;
$to = $pages;
}
}
if ($hiddenFrom) {
$multipage = ($curpage - $offset > 1 && $pages > $page ? '<a href="#" '.js_page($hiddenFrom,1).'>首页</a> ' : '').
($curpage > 1 ? ' <a href="#" '.js_page($hiddenFrom,$curpage - 1).'>‹‹上一页</a> ' : '');
for($i = $from; $i <= $to; $i++) {
$multipage .= $i == $curpage ? '<span>'.$i.'</span> ' :
'<a href="#" '.js_page($hiddenFrom,$i).'>'.$i.'</a> ';
}
$multipage .= ($curpage < $pages ? '<a href="#" '.js_page($hiddenFrom,$curpage + 1).'>下一页››</a>' : '').
($to < $pages ? '<a href="#" '.js_page($hiddenFrom,$pages).'> 末页</a>' : '');
$multipage = $multipage ? '<div class="list-page">'.$multipage.'</div>' : '';
} else {
$multipage = ($curpage - $offset > 1 && $pages > $page ? '<a href="'.$mpurl.'page=1">首页</a> ' : '').
($curpage > 1 ? ' <a href="'.$mpurl.'page='.($curpage - 1).'">‹‹上一页</a> ' : '');
for($i = $from; $i <= $to; $i++) {
$multipage .= $i == $curpage ? '<span>'.$i.'</span> ' :
'<a href="'.$mpurl.'page='.$i.'">'.$i.'</a> ';
}
$multipage .= ($curpage < $pages ? '<a href="'.$mpurl.'page='.($curpage + 1).'">下一页››</a>' : '').
($to < $pages ? '<a href="'.$mpurl.'page='.$pages.'"> 末页</a>' : '');
$multipage = $multipage ? '<div class="list-page">'.$multipage.'</div>' : '';
}
}
return $multipage;
}
//暂不用
function page_get_start($page, $ppp, $totalnum) {
$totalpage = ceil($totalnum / $ppp);
$page = max(1, min($totalpage, intval($page)));
return ($page - 1) * $ppp;
}
//暂不用
function js_page($hiddenFrom,$page)
{
if ($hiddenFrom) {
return ' onclick=javascript：$("#page").val("'.$page.'");$("#'.$hiddenFrom.'").submit(); ';
}
}
}
?>

php分页程序paginator程序代码

相关推荐