<?php
Class PAGE {
//类开始
/********************************************************
* $total 记录总数
* $pageNum 每页显示的条数
* $url = '' 链接
* $page->StartPage(显示分类统计,字符分类/数字分页,跳转);
* $page->StartPage(true/false, true/false, true/false);
* site http://www.jb200.com
*********************************************************/
private $total; //记录总数
private $pageNum; //每页显示数
private $page; //当前页数
private $pages; //总的页数
private $url; //页面url
private $Aque; //URL参数
/* 构造函数 */
public function PAGE($total, $pageNum, $url='?'){
$this->total = $total; //总记录数.
$this->pageNum = $pageNum; //每页显示数.
$this->url = $this->StrSift($url); //判断$url的值是否合法.
$this->Aque = $_GET; //页面原来所传递参数.
$this->page = $this->StrSift($_GET['page']); //当前页面GET(全局变量)方式参数,当前页码.
$this->page = is_numeric($this->page) ? $this->page : 1; //当前页码不为数字时，则把其设为1.
$this->pages = ceil($total/$pageNum); //总页数.
if($this->page<1) $this->page = 1; //当页码小于1时，则把其设为1.
//if($this->page>$this->pages) $this->page = $this->pages; //当页码大于最大页码时，则把其设为最大页码.
}
/******************
* 分页方法
*******************/
function StartPage($str, $view=true, $jump=true){
if($view==true) $PageStr .= $this->GetCount(); //分页统计信息
if($str=='str') $PageStr .= $this->GetPageStr(); //选择字符分页形式
else $PageStr .= $this->GetPageNum(); //选择数字分页形式
if($jump==true) $PageStr .= $this->JumpSelect(); //跳转
return $PageStr;
}
/**********************************************
* 显示统计信息. 格式：共5条记录 页:2/3
***********************************************/
function GetCount(){
$CountStr = "共<span>". $this->total ."</span>条记录 页:".$this->page."/".$this->pages." ";
return $CountStr;
}
/***********************************************
* 分页格式形一：第一页 上一页 下一页 末 页
************************************************/
function GetPageStr(){
$url = $this->url; //获取URL
//对URL参数进行处理:数组的键是URL变量，数组的值是URL变量的值.
foreach($this->Aque as $key => $val){
switch($key){
case "page":
$Next = $val + 1;
$Prev = $val - 1;
break;
default:
$Sque .= "&$key=".$this->StrSift($val);
}
}
if($Next==0) $Next=2;
//首 页 上一页
switch($this->page){
case $this->page<=1:
$pagestr .= "首 页 ";
$pagestr .= "上一页 ";
break;
default:
$pagestr .= "<a href='".$url."?page=1$Sque'>首 页</a> ";
$pagestr .= "<a href='".$url."?page=$Prev$Sque'>上一页</a> ";
}
//下一页 末 页
switch($this->page){
case $this->page>=$this->pages:
$pagestr .= "下一页 ";
$pagestr .= "末 页 ";
break;
default:
$pagestr .= "<a href='".$url."?page=$Next$Sque'>下一页</a> ";
$pagestr .= "<a href='".$url."?page=$this->pages$Sque'>末 页</a> ";
}
//返回分页字符串.
return $pagestr;
}
/***********************************************************
* 分页格式形如：共4307条记录 页:1/72 1 2 3 4 5 6 7 8 9 10
************************************************************/
function GetPageNum(){
$url = $this->url;
//对URL参数进行处理:数组的键是URL变量，数组的值是URL变量的值.
foreach($this->Aque as $key => $val){
switch($key){
case $key!="page":
$Sque .= "&$key=".$this->StrSift($val);
}
}
switch($this->pages){
//总页数大于12页：
case $this->pages>12:
//分页数字前：< <<
switch($this->page){
case $this->page>1:
$pagestr .= "<a href='$url?page=1".$Sque."'><</a> ";
$pagestr .= "<a href='$url?page=".($this->page-1).$Sque."'><<</a> ";
break;
default:
$pagestr .= "< ";
$pagestr .= "<< ";
}
//分页数字：1 2 3 4 5 6 当前页码左边6个分页链接，右边6个分页链接.
for($i=$this->page-6; $i<=$this->page+6; $i++){
if($i>$this->pages) break;
if($i==$this->page) $pagestr .= $i." ";
elseif($i>=1) $pagestr .= "<a href='$url?page=$i".$VarFields."'>$i</a> ";
}
//分页数字后: > >>
switch($this->page){
case $this->page<$this->pages:
$pagestr .= "<a href='$url?page=".($this->page+1).$Sque."'>>></a> ";
$pagestr .= "<a href='$url?page=".$this->pages.$Sque."'>></a> ";
break;
default:
$pagestr .= "> ";
$pagestr .= ">> ";
}
break;
default:
//总页数小于12页：
for($i=1; $i<=$this->pages; $i++){
switch($i){
case $i==$this->page:
$pagestr .= $i." ";
break;
default:
$pagestr .= "<a href='$url?page=$i".$Sque."'>$i</a> ";
}
}
}
//返回分页字符串.
return $pagestr;
}
/************************
* 定义跳转页. BEGIN
*************************/
function JumpSelect(){
$url = $this->url;
//对URL参数进行处理:数组的键是URL变量，数组的值是URL变量的值.
foreach($this->Aque as $key => $val){
if($key != "page") $Sque .= "&$key=".$this->StrSift($val);
}
$SelectStr = "n<select id='JumpSelect' name='NowPage' size='1' ";
$SelectStr .= "onChange="window.location='".$url."?page='+this.value+'".$Sque."'">n";
for($i=1; $i<=$this->pages; $i++){
if($i == $this->page) $selected = " selected";
else $selected = "";
$SelectStr .= "<option value=$i".$selected.">$i</option>n";
}
$SelectStr .= "</select>n";
//返回分页字符串.
return $SelectStr;
}
/**********************************
* 过滤特殊字符.
***********************************/
private function StrSift($str){
$str = str_replace(""","",$str);
$str = str_replace("'","",$str);
$str = str_replace("[url=file://%22,%22%22,$str/]","",$str[/url]);
$str = str_replace("/","",$str);
$str = str_replace(":","",$str);
$str = str_replace("?","",$str); //去除会出现"??".
$str = str_replace(">","",$str);
$str = str_replace("<","",$str);
$str = str_replace("%","",$str);
$str = str_replace("*","",$str);
$str = str_replace("&","",$str);
$str = str_replace(".","",$str);
return $str;
}
//类结束
}
?>
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