Pagination means dividing a page into two or more pages.
There is an automatic paging mechanism that can divide the content in the mobile Web form
into a group of smaller pages for presentation, suitable for specific equipment. This mechanism also renders user interface elements that can be used to navigate to other pages.
This article mainly introduces a universal PHP paging class, which is particularly easy to use. Friends who need to use PHP paging class should not miss it. The code is as follows
<?php
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
/**
* 分页类
* 使用方式:
* $page = new Page();
* $page->init(1000, 20);
* $page->setNotActiveTemplate('<span> {a} </span>');
* $page->setActiveTemplate('{a}');
* echo $page->show();
*
*
* @author 风居住的地方
*/
class Page {
/**
* 总条数
*/
private $total;
/**
* 每页大小
*/
private $pageSize;
/**
* 总页数
*/
private $pageNum;
/**
* 当前页
*/
private $page;
/**
* 地址
*/
private $uri;
/**
* 分页变量
*/
private $pageParam;
/**
* LIMIT XX,XX
*/
private $limit;
/**
* 数字分页显示
*/
private $listnum = 8;
/**
* 分页显示模板
* 可用变量参数
* {total} 总数据条数
* {pagesize} 每页显示条数
* {start} 本页开始条数
* {end} 本页结束条数
* {pagenum} 共有多少页
* {frist} 首页
* {pre} 上一页
* {next} 下一页
* {last} 尾页
* {list} 数字分页
* {goto} 跳转按钮
*/
private $template = '<p><span>共有{total}条数据</span><span>每页显示{pagesize}条数据</span>,<span>本页{start}-{end}条数据</span><span>共有{pagenum}页</span><ul>{frist}{pre}{list}{next}{last}{goto}</ul></p>';
/**
* 当前选中的分页链接模板
*/
private $activeTemplate = '<li class="active"><a href="javascript:;">{text}</a></li>';
/**
* 未选中的分页链接模板
*/
private $notActiveTemplate = '<li><a href="{url}">{text}</a></li>';
/**
* 显示文本设置
*/
private $config = array('frist' => '首页', 'pre' => '上一页', 'next' => '下一页', 'last' => '尾页');
/**
* 初始化
* @param type $total 总条数
* @param type $pageSize 每页大小
* @param type $param url附加参数
* @param type $pageParam 分页变量
*/
public function init($total, $pageSize, $param = '', $pageParam = 'page') {
$this->total = intval($total);
$this->pageSize = intval($pageSize);
$this->pageParam = $pageParam;
$this->uri = $this->geturi($param);
$this->pageNum = ceil($this->total / $this->pageSize);
$this->page = $this->setPage();
$this->limit = $this->setlimit();
}
/**
* 设置分页模板
* @param type $template 模板配置
*/
public function setTemplate($template) {
$this->template = $template;
}
/**
* 设置选中分页模板
* @param type $activeTemplate 模板配置
*/
public function setActiveTemplate($activeTemplate) {
$this->activeTemplate = $activeTemplate;
}
/**
* 设置未选中分页模板
* @param type $notActiveTemplate 模板配置
*/
public function setNotActiveTemplate($notActiveTemplate) {
$this->notActiveTemplate = $notActiveTemplate;
}
/**
* 返回分页
* @return type
*/
public function show() {
return str_ireplace(array(
'{total}',
'{pagesize}',
'{start}',
'{end}',
'{pagenum}',
'{frist}',
'{pre}',
'{next}',
'{last}',
'{list}',
'{goto}',
), array(
$this->total,
$this->setPageSize(),
$this->star(),
$this->end(),
$this->pageNum,
$this->frist(),
$this->prev(),
$this->next(),
$this->last(),
$this->pagelist(),
$this->gopage(),
), $this->template);
}
/**
* 获取limit起始数
* @return type
*/
public function getOffset() {
return ($this->page - 1) * $this->pageSize;
}
/**
* 设置LIMIT
* @return type
*/
private function setlimit() {
return "limit " . ($this->page - 1) * $this->pageSize . ",{$this->pageSize}";
}
/**
* 获取limit
* @param type $args
* @return type
*/
public function __get($args) {
if ($args == "limit") {
return $this->limit;
} else {
return null;
}
}
/**
* 初始化当前页
* @return int
*/
private function setPage() {
if (!empty($_GET[$this->pageParam])) {
if ($_GET[$this->pageParam] > 0) {
if ($_GET[$this->pageParam] > $this->pageNum)
return $this->pageNum;
else
return $_GET[$this->pageParam];
}
}
return 1;
}
/**
* 初始化url
* @param type $param
* @return string
*/
private function geturi($param) {
$url = $_SERVER['REQUEST_URI'] . (strpos($_SERVER['REQUEST_URI'], "?") ? "" : "?") . $param;
$parse = parse_url($url);
if (isset($parse["query"])) {
parse_str($parse["query"], $params);
unset($params["page"]);
$url = $parse["path"] . "?" . http_build_query($params);
return $url;
} else {
return $url;
}
}
/**
* 本页开始条数
* @return int
*/
private function star() {
if ($this->total == 0) {
return 0;
} else {
return ($this->page - 1) * $this->pageSize + 1;
}
}
/**
* 本页结束条数
* @return type
*/
private function end() {
return min($this->page * $this->pageSize, $this->total);
}
/**
* 设置当前页大小
* @return type
*/
private function setPageSize() {
return $this->end() - $this->star() + 1;
}
/**
* 首页
* @return type
*/
private function frist() {
$html = '';
if ($this->page == 1) {
$html .= $this->replace("{$this->uri}&page=1", $this->config['frist'], true);
} else {
$html .= $this->replace("{$this->uri}&page=1", $this->config['frist'], false);
}
return $html;
}
/**
* 上一页
* @return type
*/
private function prev() {
$html = '';
if ($this->page > 1) {
$html .= $this->replace($this->uri.'&page='.($this->page - 1), $this->config['pre'], false);
} else {
$html .= $this->replace($this->uri.'&page='.($this->page - 1), $this->config['pre'], true);
}
return $html;
}
/**
* 分页数字列表
* @return type
*/
private function pagelist() {
$linkpage = "";
$lastlist = floor($this->listnum / 2);
for ($i = $lastlist; $i >= 1; $i--) {
$page = $this->page - $i;
if ($page >= 1) {
$linkpage .= $this->replace("{$this->uri}&page={$page}", $page, false);
} else {
continue;
}
}
$linkpage .= $this->replace("{$this->uri}&page={$this->page}", $this->page, true);
for ($i = 1; $i <= $lastlist; $i++) {
$page = $this->page + $i;
if ($page <= $this->pageNum) {
$linkpage .= $this->replace("{$this->uri}&page={$page}", $page, false);
} else {
break;
}
}
return $linkpage;
}
/**
* 下一页
* @return type
*/
private function next() {
$html = '';
if ($this->page < $this->pageNum) {
$html .= $this->replace($this->uri.'&page='.($this->page + 1), $this->config['next'], false);
} else {
$html .= $this->replace($this->uri.'&page='.($this->page + 1), $this->config['next'], true);
}
return $html;
}
/**
* 最后一页
* @return type
*/
private function last() {
$html = '';
if ($this->page == $this->pageNum) {
$html .= $this->replace($this->uri.'&page='.($this->pageNum), $this->config['last'], true);
} else {
$html .= $this->replace($this->uri.'&page='.($this->pageNum), $this->config['last'], false);
}
return $html;
}
/**
* 跳转按钮
* @return string
*/
private function gopage() {
$html = '';
$html.=' <input type="text" value="' . $this->page . '" onkeydown="javascript:if(event.keyCode==13){var page=(this.value>' . $this->pageNum . ')?' . $this->pageNum . ':this.value;location=\'' . $this->uri . '&page=\'+page+\'\'}" style="width:25px;"/><input type="button" onclick="javascript:var page=(this.previousSibling.value>' . $this->pageNum . ')?' . $this->pageNum . ':this.previousSibling.value;location=\'' . $this->uri . '&page=\'+page+\'\'" value="GO"/>';
return $html;
}
/**
* 模板替换
* @param type $replace 替换内容
* @param type $result 条件
* @return type
*/
private function replace($url, $text, $result = true) {
$template = ($result ? $this->activeTemplate : $this->notActiveTemplate);
$html = str_replace('{url}', $url, $template);
$html = str_replace('{text}', $text, $html);
return $html;
}
}Copy after login
The second php paging class
<?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
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;
}
?>Copy after login
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