<?php
/**
* 示例：
* <?php
* require_once("pager.class.php");
* $subPages=new pager($totalPage,$currentPage);
* echo $subPages->showpager();
* ?>
* */
class pager{
var $each_disNums;//每页显示的条目数
var $nums;//总条目数
var $current_page;//当前被选中的页
var $sub_pages;//每次显示的页数
var $pageNums;//总页数
var $page_array = array();//用来构造分页的数组
var $subPage_link;//每个分页的链接
var $subPage_type;//显示分页的类型
var $_lang = array(
'index_page' => '首页',
'pre_page' => '上一页',
'next_page' => '下一页',
'last_page' => '尾页',
'current_page' => '当前页：',
'total_page' => '总页数：',
'current_show' => '当前显示：',
'total_record' => '总记录数：'
);
/*
__construct是SubPages的构造函数，用来在创建类的时候自动运行.
@total_page 总页数
@current_num 当前被选中的页
@sub_pages 每次显示的页数
@subPage_link 每个分页的链接
@subPage_type 显示分页的类型
当@subPage_type=1的时候为普通分页模式
example： 共4523条记录,每页显示10条,当前第1/453页 [首页] [上页] [下页] [尾页]
当@subPage_type=2的时候为经典分页样式
example： 当前第1/453页 [首页] [上页] 1 2 3 4 5 6 7 8 9 10 [下页] [尾页]
*/
function __construct($total_page,$current_page,$sub_pages=10,$subPage_link='',$subPage_type=2){
$this->pager($total_page,$current_page,$sub_pages,$subPage_link,$subPage_type);
}
function pager($total_page,$current_page,$sub_pages=10,$subPage_link='',$subPage_type=2){
if(!$current_page){
$this->current_page=1;
}else{
$this->current_page=intval($current_page);
}
$this->sub_pages=intval($sub_pages);
$this->pageNums=ceil($total_page);
if($subPage_link){
if(strpos($subPage_link,'?page=') === false AND strpos($subPage_link,'&page=') === false){
$subPage_link .= (strpos($subPage_link,'?') === false ? '?' : '&') . 'page=';
}
}
$this->subPage_link=$subPage_link ? $subPage_link : $_SERVER['PHP_SELF'] . '?page=';
$this->subPage_type = $subPage_type;
}
/*
show_SubPages函数用在构造函数里面。而且用来判断显示什么样子的分页
*/
function showpager(){
if($this->subPage_type == 1){
return $this->pagelist1();
}elseif ($this->subPage_type == 2){
return $this->pagelist2();
}
}
/*
用来给建立分页的数组初始化的函数。
*/
function initArray(){
for($i=0;$i<$this->sub_pages;$i++){
$this->page_array[$i]=$i;
}
return $this->page_array;
}
/*
construct_num_Page该函数使用来构造显示的条目
即使：[1][2][3][4][5][6][7][8][9][10]
*/
function construct_num_Page(){
if($this->pageNums < $this->sub_pages){
$current_array=array();
for($i=0;$i<$this->pageNums;$i++){
$current_array[$i]=$i+1;
}
}else{
$current_array=$this->initArray();
if($this->current_page <= 3){
for($i=0;$i<count($current_array);$i++){
$current_array[$i]=$i+1;
}
}elseif ($this->current_page <= $this->pageNums && $this->current_page > $this->pageNums - $this->sub_pages + 1 ){
for($i=0;$i<count($current_array);$i++){
$current_array[$i]=($this->pageNums)-($this->sub_pages)+1+$i;
}
}else{
for($i=0;$i<count($current_array);$i++){
$current_array[$i]=$this->current_page-2+$i;
}
}
}
return $current_array;
}
/*
构造普通模式的分页
共4523条记录,每页显示10条,当前第1/453页 [首页] [上页] [下页] [尾页]
*/
function pagelist1(){
$subPageCss1Str="";
$subPageCss1Str.= $this->_lang['current_page'] . $this->current_page." / " .$this->pageNums." ";
if($this->current_page > 1){
$firstPageUrl=$this->subPage_link."1";
$prewPageUrl=$this->subPage_link.($this->current_page-1);
$subPageCss1Str.="<a href='$firstPageUrl'>{$this->_lang['index_page']}</a> ";
$subPageCss1Str.="<a href='$prewPageUrl'>{$this->_lang['pre_page']}</a> ";
}else {
$subPageCss1Str.="{$this->_lang['index_page']} ";
$subPageCss1Str.="{$this->_lang['pre_page']} ";
}
if($this->current_page < $this->pageNums){
$lastPageUrl=$this->subPage_link.$this->pageNums;
$nextPageUrl=$this->subPage_link.($this->current_page+1);
$subPageCss1Str.=" <a href='$nextPageUrl'>{$this->_lang['next_page']}</a> ";
$subPageCss1Str.="<a href='$lastPageUrl'>{$this->_lang['last_page']}</a> ";
}else {
$subPageCss1Str.="{$this->_lang['next_page']} ";
$subPageCss1Str.="{$this->_lang['last_page']} ";
}
return $subPageCss1Str;
}
/*
构造经典模式的分页
当前第1/453页 [首页] [上页] 1 2 3 4 5 6 7 8 9 10 [下页] [尾页]
*/
function pagelist2(){
$subPageCss2Str="";
$subPageCss2Str.=$this->_lang['current_page'] . $this->current_page."/" . $this->pageNums." ";
if($this->current_page > 1){
$firstPageUrl=$this->subPage_link."1";
$prewPageUrl=$this->subPage_link.($this->current_page-1);
$subPageCss2Str.="<a href='$firstPageUrl'>{$this->_lang['index_page']}</a> ";
$subPageCss2Str.="<a href='$prewPageUrl'>{$this->_lang['pre_page']}</a> ";
}else {
$subPageCss2Str.="{$this->_lang['index_page']} ";
$subPageCss2Str.="{$this->_lang['pre_page']} ";
}
$a=$this->construct_num_Page();
for($i=0;$i<count($a);$i++){
$s=$a[$i];
if($s == $this->current_page ){
$subPageCss2Str.="[<span style='color:red;font-weight:bold;'>".$s."</span>]";
}else{
$url=$this->subPage_link.$s;
$subPageCss2Str.="[<a href='$url'>".$s."</a>]";
}
}
if($this->current_page < $this->pageNums){
$lastPageUrl=$this->subPage_link.$this->pageNums;
$nextPageUrl=$this->subPage_link.($this->current_page+1);
$subPageCss2Str.=" <a href='$nextPageUrl'>{$this->_lang['next_page']}</a> ";
$subPageCss2Str.="<a href='$lastPageUrl'>{$this->_lang['last_page']}</a> ";
}else {
$subPageCss2Str.="{$this->_lang['next_page']} ";
$subPageCss2Str.="{$this->_lang['last_page']} ";
}
return $subPageCss2Str;
}
/*
__destruct析构函数，当类不在使用的时候调用，该函数用来释放资源。
*/
function __destruct(){
unset($each_disNums);
unset($nums);
unset($current_page);
unset($sub_pages);
unset($pageNums);
unset($page_array);
unset($subPage_link);
unset($subPage_type);
}
}
?>
