<?php /* *本程序文件对分页程序进行了封装 * */ class Page_Link { var $page_max = 10; //一组页码的最大数 var $page_num = 10; //总页数 var $length = 20; //一页的数据条数 var $isNextPage = true; var $isFirstPage = false; function Calculation_Page_Num( $total ) { $this->page_num = ceil( $total / $this->length ); return $this->page_num; } function Calculation_Min_Max( $act_page = 1 ) { // 定义左右偏移量 $py_left = 0; $py_right = 0; // 定义左右边界 $bj_left = 0; $bj_right = 0; // 定义滚动区间边界 $gd_left = 0; $gd_right = 0; // 判断是否需要分组 if ( ( $this->page_num - $this->page_max ) <= 0 ) { // 不需要分组 $bj_left = 1; $bj_right = $this->page_num; } else { // 要进行分组 // 判断容量的奇偶 $tmp = $this->page_max % 2; if ( $tmp === 1 ) { // 奇数 $py_left = $py_right = ( $this->page_max - 1 ) / 2; } else { // 偶数 $py_left = $this->page_max / 2 - 1; $py_right = $this->page_max / 2; } // 计算滚动区间 $gd_left = 1 + $py_left; $gd_right = $this->page_num - $py_right; // 判断当前页是否落入了滚动区间 if ( $act_page >= $gd_left && $act_page <= $gd_right ) { // 区间内 $bj_left = $act_page - $py_left; $bj_right = $act_page + $py_right; } else { // 区间外 if ( ( $act_page - $py_left ) <= 1 ) { // 左侧固定区间 $bj_left = 1; $bj_right = $this->page_max; } else { $bj_left = $this->page_num - $this->page_max + 1; $bj_right = $this->page_num; } } } $res = array(); $res[‘min‘] = $bj_left; $res[‘max‘] = $bj_right; return $res; } // 主方法
/*
* $total 数据总数
* $act_page 当前页
* $url 跳转url
* $param 页码参数
*/
function make_page( $total, $act_page, $url, $param )
{
$page_num = $this->Calculation_Page_Num( $total );
$arr_min_max = $this->Calculation_Min_Max( $act_page );
if (!eregi("([?|&]$param=)", $url)) {
$url = strpos($url,"?")===false?$url."?":$url."&";
$url = $url."$param=0";
}
if ( $act_page > $page_num )
{
$act_page = $page_num;
}
// 用正则把url改成正规的
$url = eregi_replace( $param . ‘=[0-9]+‘, $param . ‘=0‘, $url );
$res = array();
$d = 0;
for( $i = $arr_min_max[‘min‘];$i <= $arr_min_max[‘max‘];$i++ )
{
if ( $i == $act_page )
{
$res[$d][‘url‘] = ‘‘;
$res[$d][‘name‘] = $i;
$res[$d][‘no‘] = $i;
}
else
{
$res[$d][‘url‘] = str_replace( $param . ‘=0‘, $param . ‘=‘ . $i, $url );
$res[$d][‘name‘] = $i;
$res[$d][‘no‘] = $i;
}
$d++;
}
if ( $this->isNextPage )
{
$res = $this->make_before_next_link( $res, $act_page, $url, $param );
}
if ( $this->isFirstPage )
{
$res = $this->make_first_end_link( $res, $act_page, $url, $param );
}
return $res;
}
//// 带总页数
function make_page_with_total( $total, $act_page, $url, $param )
{
$page_num = $this->Calculation_Page_Num( $total );
$arr_min_max = $this->Calculation_Min_Max( $act_page );
if (!eregi("([?|&]$param=)", $url)) {
$url = strpos($url,"?")===false?$url."?":$url."&";
$url = $url."$param=0";
}
if ( $act_page > $page_num )
{
$act_page = $page_num;
}
// 用正则把url改成正规的
$url = eregi_replace( $param . ‘=[0-9]+‘, $param . ‘=0‘, $url );
$res = array();
$d = 0;
for( $i = $arr_min_max[‘min‘];$i <= $arr_min_max[‘max‘];$i++ )
{
if ( $i == $act_page )
{
$res[$d][‘url‘] = ‘‘;
$res[$d][‘name‘] = $i;
$res[$d][‘no‘] = $i;
}
else
{
$res[$d][‘url‘] = str_replace( $param . ‘=0‘, $param . ‘=‘ . $i, $url );
$res[$d][‘name‘] = $i;
$res[$d][‘no‘] = $i;
}
$d++;
}
if ( $this->isNextPage )
{
$res = $this->make_before_next_link( $res, $act_page, $url, $param );
}
if ( $this->isFirstPage )
{
$res = $this->make_first_end_link( $res, $act_page, $url, $param );
}
$total_num= ceil($total/$this->length);
$result[‘total‘]=$total_num;
$result[‘DATA‘]=$res;
return $result;
}
// 附加上一页和下一页
function make_before_next_link( $arr, $act, $url, $param )
{
$tmp = array();
$before = $act - 1;
$next = $act + 1;
if ( $before < 1 )
{
$before = 1;
$tmp[0][‘url‘] = ‘‘;
$tmp[0][‘name‘] = "上一页";
$tmp[0][‘no‘] = $before;
}
else
{
$tmp[0][‘url‘] = str_replace( $param . ‘=0‘, $param . ‘=‘ . $before, $url );
$tmp[0][‘name‘] = "上一页";
$tmp[0][‘no‘] = $before;
}
$counts = sizeof( $arr );
$tmp_count = sizeof( $tmp );
for( $i = 0;$i < $counts;$i++ )
{
$tmp[$tmp_count][‘url‘] = $arr[$i][‘url‘];
$tmp[$tmp_count][‘name‘] = $arr[$i][‘name‘];
$tmp[$tmp_count][‘no‘] = $arr[$i][‘no‘];
$tmp_count++;
}
if ( $next > $this->page_num )
{
$next = $this->page_num;
$tmp[$tmp_count][‘url‘] = ‘‘;
$tmp[$tmp_count][‘name‘] = "下一页";
$tmp[$tmp_count][‘no‘] = $next;
}
else
{
$tmp[$tmp_count][‘url‘] = str_replace( $param . ‘=0‘, $param . ‘=‘ . $next, $url );
$tmp[$tmp_count][‘name‘] = "下一页";
$tmp[$tmp_count][‘no‘] = $next;
}
return $tmp;
}
// 附加首页和尾页
function make_first_end_link( $arr, $act, $url, $param )
{
$tmp = array();
$before = 1;
$next = $this->page_num;
if ( $act == 1 )
{
$before = 1;
$tmp[0][‘url‘] = ‘‘;
$tmp[0][‘name‘] = "首页";
$tmp[0][‘no‘] = $before;
}
else
{
$tmp[0][‘url‘] = str_replace( $param . ‘=0‘, $param . ‘=‘ . $before, $url );
$tmp[0][‘name‘] = "首页";
$tmp[0][‘no‘] = $before;
}
$counts = sizeof( $arr );
$tmp_count = sizeof( $tmp );
for( $i = 0;$i < $counts;$i++ )
{
$tmp[$tmp_count][‘url‘] = $arr[$i][‘url‘];
$tmp[$tmp_count][‘name‘] = $arr[$i][‘name‘];
$tmp[$tmp_count][‘no‘] = $arr[$i][‘no‘];
$tmp_count++;
}
if ( $act == $this->page_num )
{
$tmp[$tmp_count][‘url‘] = ‘‘;
$tmp[$tmp_count][‘name‘] = "尾页";
$tmp[$tmp_count][‘no‘] = $next;
}
else
{
$tmp[$tmp_count][‘url‘] = str_replace( $param . ‘=0‘, $param . ‘=‘ . $next, $url );
$tmp[$tmp_count][‘name‘] = "尾页";
$tmp[$tmp_count][‘no‘] = $next;
}
return $tmp;
}
/**
* 带上一页<，下一页>，省略号的分页
* @param int $total 记录总条数
* @param int $act_page 当前页码
* @param string $url url
* @param int $maxpageicon 最大显示页码数
* @param int $style 上一页，下一页显示样式
* @param string $param url参数
*/
function make_page_with_points( $total,$act_page,$url,$maxpageicon,$style,$param )
{
$page_num = $this->Calculation_Page_Num( $total ); //总页数
$arr_min_max = $this->Calculation_Min_Max( $act_page ); //最大页，最小页
if($total==0)
{
return "";
}
if( $act_page > $page_num )
{
$act_page = $page_num+1;
$page_num = $page_num+1;
}
switch ($style){
case 1:
$name_before = ‘前一页‘;
$name_next = ‘后一页‘;
break;
case 2:
$name_before = ‘<‘;
$name_next = ‘>‘;
break;
case 3:
$name_before = ‘<<‘;
$name_next = ‘>>‘;
break;
default:
$name_before = ‘上一页‘;
$name_next = ‘下一页‘;
}
if (!eregi("([?|&]$param=)", $url)) {
$url = strpos($url,"?")===false?$url."?":$url."&";
$url = $url."$param=0";
}
// 用正则把url改成正规的
$url = eregi_replace( $param . ‘=[0-9]+‘, $param . ‘=0‘, $url );
$res = array();
$no_before = $act_page-1;
$no_next = $act_page+1;
//总页数如果小于等于初始化最大呈现页数
if ($page_num<= ($maxpageicon + 1))
{
//如果当前页数是首页 上一页无效
if ($act_page == 1)
{
$res[0][‘url‘] = ‘‘;
$res[0][‘name‘] = $name_before;
$res[0][‘no‘] = $no_before;
}
else //上一页有效
{
$res[0][‘url‘] = str_replace( $param . ‘=0‘, $param . ‘=‘ .($act_page - 1), $url );
$res[0][‘name‘] = $name_before;
$res[0][‘no‘] = $no_before;
}
//循环添加页码
$d = 1;
for ($i = 1; $i <= $page_num; $i++)
{
if ($i != $act_page)
{
$res[$d][‘url‘] = str_replace( $param . ‘=0‘, $param . ‘=‘ . $i, $url );
$res[$d][‘name‘] = $i;
$res[$d][‘no‘] = $i;
}
else //当前页，页码
{
$res[$d][‘url‘] = ‘‘;
$res[$d][‘name‘] = $i;
$res[$d][‘no‘] = $i;
$res[$d][‘attr‘] = ‘current‘;
}
$d++;
}
$last_d = count($res);
//判断尾页
if($act_page == $page_num) //下一页无效
{
$res[$last_d][‘url‘] = ‘‘;
$res[$last_d][‘name‘] = $name_next;
$res[$last_d][‘no‘] = $no_next;
}
else
{
$res[$last_d][‘url‘] = str_replace( $param . ‘=0‘, $param . ‘=‘ .($act_page + 1), $url );
$res[$last_d][‘name‘] = $name_next;
$res[$last_d][‘no‘] = $no_next;
}
}else if ($page_num > ($maxpageicon + 1))//如果总页数满足添加省略号
{
if ($act_page <= $maxpageicon) //如果当前页小于等于初始化数目
{
//如果当前页数是首页 上一页无效
if ($act_page == 1)
{
$res[0][‘url‘] = ‘‘;
$res[0][‘name‘] = $name_before;
$res[0][‘no‘] = $no_before;
}
else //上一页有效
{
$res[0][‘url‘] = str_replace( $param . ‘=0‘, $param . ‘=‘ .($act_page - 1), $url );
$res[0][‘name‘] = $name_before;
$res[0][‘no‘] = $no_before;
}
//循环添加页码
$d = 1;
for ($i = 1; $i <= $maxpageicon; $i++)
{
if ($i != $act_page)
{
$res[$d][‘url‘] = str_replace( $param . ‘=0‘, $param . ‘=‘ . $i, $url );
$res[$d][‘name‘] = $i;
$res[$d][‘no‘] = $i;
}
else //当前页，页码
{
$res[$d][‘url‘] = ‘‘;
$res[$d][‘name‘] = $i;
$res[$d][‘no‘] = $i;
$res[$d][‘attr‘] = ‘current‘;
}
$d++;
}
$last_d = count($res);
//添加省略号
$res[$last_d][‘url‘] = ‘‘;
$res[$last_d][‘name‘] = ‘...‘;
$res[$last_d][‘no‘] = ‘‘;
//总页数
$res[$last_d+1][‘url‘] = str_replace( $param . ‘=0‘, $param . ‘=‘ . $page_num, $url );
$res[$last_d+1][‘name‘] = $page_num;
$res[$last_d+1][‘no‘] = $page_num;
//下一页
$res[$last_d+1][‘url‘] = str_replace( $param . ‘=0‘, $param . ‘=‘ . ($act_page + 1), $url );
$res[$last_d+1][‘name‘] = $name_next;
$res[$last_d+1][‘no‘] = $no_next;
}else//如果当前页大于最大显示页面
{
if ($act_page > ($page_num - $maxpageicon))//满足后几页
{
//上一页
$res[0][‘url‘] = str_replace( $param . ‘=0‘, $param . ‘=‘ .($act_page - 1), $url );
$res[0][‘name‘] = $name_before;
$res[0][‘no‘] = $no_before;
//第一页
$res[1][‘url‘] = str_replace( $param . ‘=0‘, $param . ‘=1‘, $url );
$res[1][‘name‘] = 1;
$res[1][‘no‘] = 1;
//省略号
$res[2][‘url‘] = ‘‘;
$res[2][‘name‘] = ‘...‘;
$res[2][‘no‘] = ‘‘;
$d = 3;
for ($i = ($page_num - $maxpageicon + 1); $i <= $page_num; $i++)
{
if ($i != $act_page)
{
$res[$d][‘url‘] = str_replace( $param . ‘=0‘, $param . ‘=‘ . $i, $url );
$res[$d][‘name‘] = $i;
$res[$d][‘no‘] = $i;
}
else //当前页，页码
{
$res[$d][‘url‘] = ‘‘;
$res[$d][‘name‘] = $i;
$res[$d][‘no‘] = $i;
$res[$d][‘attr‘] = ‘current‘;
}
$d++;
}
$last_d = count($res);
//判断尾页
if($act_page == $page_num) //下一页无效
{
$res[$last_d][‘url‘] = ‘‘;
$res[$last_d][‘name‘] = $name_next;
$res[$last_d][‘no‘] = $no_next;
}
else
{
$res[$last_d][‘url‘] = str_replace( $param . ‘=0‘, $param . ‘=‘ .($act_page + 1), $url );
$res[$last_d][‘name‘] = $name_next;
$res[$last_d][‘no‘] = $no_next;
}
}else//满足处在中间
{
//上一页
$res[0][‘url‘] = str_replace( $param . ‘=0‘, $param . ‘=‘ .($act_page - 1), $url );
$res[0][‘name‘] = $name_before;
$res[0][‘no‘] = $no_before;
//第一页
$res[1][‘url‘] = str_replace( $param . ‘=0‘, $param . ‘=1‘, $url );
$res[1][‘name‘] = 1;
$res[1][‘no‘] = 1;
//省略号
$res[2][‘url‘] = ‘‘;
$res[2][‘name‘] = ‘...‘;
$res[2][‘no‘] = ‘‘;
for ($i = ($act_page - ($maxpageicon - 2) / 2); $i <= floor($act_page+($maxpageicon - 2) / 2); $i++)
{
$i = ceil($i);
if ($i != $act_page)
{
$res[$d][‘url‘] = str_replace( $param . ‘=0‘, $param . ‘=‘ . $i, $url );
$res[$d][‘name‘] = $i;
$res[$d][‘no‘] = $i;
}
else //当前页，页码
{
$res[$d][‘url‘] = ‘‘;
$res[$d][‘name‘] = $i;
$res[$d][‘no‘] = $i;
$res[$d][‘attr‘] = ‘current‘;
}
$d++;
}
$last_d = count($res);
//加省略号
$res[$last_d][‘url‘] = ‘‘;
$res[$last_d][‘name‘] = ‘...‘;
$res[$last_d][‘no‘] = ‘‘;
//当前页
$res[$last_d+1][‘url‘] = str_replace( $param . ‘=0‘, $param . ‘=‘ . $page_num, $url );
$res[$last_d+1][‘name‘] = $page_num;
$res[$last_d+1][‘no‘] = $page_num;
//下一页
$res[$last_d+2][‘url‘] = str_replace( $param . ‘=0‘, $param . ‘=‘ . ($act_page + 1), $url );
$res[$last_d+2][‘name‘] = $name_next;
$res[$last_d+2][‘no‘] = $no_next;
//exit;
}
}
}
return $res;
}
}
?>
调用
//分页 $page=$_GET["p"]; $num=5; include "class.page.php"; $rs_total = $cls_news->get_news_count($classid);//数据总数 $total_page = ceil($rs_total / $list_news_count);//总页数 $page_cls = new Page_Link(); $page_cls->length = $num;//每页条数 $url = "http://localhost:8001/list.php"; $page_arr = $page_cls->make_page($rs_total,$page,$url,"p"); $fenye=""; foreach ($page_arr as $v){ $v["url"]=$v["url"]==""?"javascript:;":$v["url"]; if ($v["name"]=="Previous"){ $fenye .="<a href=‘{$v["url"]}‘ class=‘listPrev‘>{$v["name"]}</a>"; }elseif($v["name"]=="Next"){ $fenye .="<a href=‘{$v["url"]}‘ class=‘listNext‘>{$v["name"]}</a>"; }else{ $fenye .="<a href=‘{$v["url"]}‘>{$v["name"]}</a>"; } } echo $fenye;
原文：http://www.cnblogs.com/wangxusummer/p/4149243.html