<?php
//分页类代码
//edit: www.jb200.com
class Page {
private $total;//总数量
private $limit;//返回
mysql的limit语句
private $pageStart;//开始的数值
private $pageStop;//结束的数值
private $pageNumber;//显示分页数字的数量
private $page;//当前页
private $pageSize;//每页显示的数量
private $pageToatl;//分页的总数量
private $pageParam;//分页变量
private $uri;//URL参数
/**
* 分页设置样式 不区分大小写
* %pageToatl% //总页数
* %page%//当前页
* %pageSize% //当前页显示数据条数
* %pageStart%//本页起始条数
* %pageStop%//本页结束条数
* %total%//总数据条数
* %first%//首页
* %ending%//尾页
* %up%//上一页
* %down%//下一页
* %F%//起始页
* %E%//结束页
* %omitFA%//前省略加跳转
* %omitEA%//后省略加跳转
* %omitF%//前省略
* %omitE%//后省略
* %numberF%//固定数量的数字分页
* %numberD%//左右对等的数字分页
* %input%//跳转输入框
* %GoTo%//跳转按钮
*/
private $pageType = '<span class="pageher">第%page%页/共%pageToatl%页</span>%first%%up%%F%%omitFA%%numberF%%omitEA%%E%%down%%ending%';
//显示值设置
private $pageShow = array('first'=>'首页','ending'=>'尾页','up'=>'上一页','down'=>'下一页','GoTo'=>'GO');
/**
* 初始化数据,构造方法
* @access public
* @param int $total 数据总数量
* @param int $pageSize 每页显示条数
* @param int $pageNumber 分页数字显示数量(使用%numberF%和使用%numberD%会有不同的效果)
* @param string $pageParam分页变量
* @return void
*/
public function __construct($total,$pageSize=10,$pageNumber=5,$pageParam='p'){
$this->total = $total<0?0:$total;
$this->pageSize = $pageSize<0?0:$pageSize;
$this->pageNumber = $pageNumber<0?0:$pageNumber;
$this->pageParam = $pageParam;
$this->calculate();
}
/**
* 显示分页
* @access public
* @return string HTML分页字符串
*/
public function pageShow(){
$this->uri();
if($this->pageToatl>1){
if($this->page == 1){
$first = '<span class="disabled">'.$this->pageShow['first'].'</span>';
$up = '<span class="disabled">'.$this->pageShow['up'].'</span>';
}else{
$first = '<a href="'.$this->uri.'&'.$this->pageParam.'=1">'.$this->pageShow['first'].'</a>';
$up = '<a href="'.$this->uri.'&'.$this->pageParam.'='.($this->page-1).'">'.$this->pageShow['up'].'</a>';
}
if($this->page >= $this->pageToatl){
$ending = '<span class="disabled">'.$this->pageShow['ending'].'</span>';
$down = '<span class="disabled">'.$this->pageShow['down'].'</span>';
}else{
$ending = '<a href="'.$this->uri.'&'.$this->pageParam.'='.$this->pageToatl.'">'.$this->pageShow['ending'].'</a>';
$down = '<a href="'.$this->uri.'&'.$this->pageParam.'='.($this->page+1).'">'.$this->pageShow['down'].'</a>';
}
$input = '<input type="text" value="'.$this->page.'" onkeydown="
javascript: if(event.keyCode==13){var value = parseInt(this.value); var page=(value>'.$this->pageToatl.') ? '.$this->pageToatl.' : value; location=''.$this->uri.'&'.$this->pageParam.'='+page+''; return false;}">';
$GoTo = '<button onclick="javascript:var value=parseInt(this.previousSibling.value); var page=(value>'.$this->pageToatl.') ? '.$this->pageToatl.' : value; location=''.$this->uri.'&'.$this->pageParam.'='+page+''; return false;">'.$this->pageShow['GoTo'].'</button>';
}else{
$first = '';$up ='';$ending = '';$down = '';$input = '';$GoTo = '';
}
$this->numberF();
return str_ireplace(array('%pageToatl%','%page%','%pageSize%','%pageStart%','%pageStop%','%total%','%first%','%ending%','%up%','%down%','%input%','%GoTo%'),array($this->pageToatl,$this->page,$this->pageStop-$this->pageStart,$this->pageStart,$this->pageStop,$this->total,$first,$ending,$up,$down,$input,$GoTo),$this->pageType);
}
/**
*数字分页
*/
private function numberF(){
$pageF = stripos($this->pageType,'%numberF%');
$pageD = stripos($this->pageType,'%numberD%');
$numberF = '';$numberD = '';$F = '';$E ='';$omitF = '';$omitFA = '';$omitE = '';$omitEA = '';
if($pageF!==false || $pageD!==false){
if($pageF!==false){
$number = $this->pageNumber%2==0?$this->pageNumber/2:($this->pageNumber+1)/2;
$DStart = $this->page - $number<0?$this->page - $number-1:0;
if($this->page+$number-$DStart > $this->pageToatl){
$DStop = ($this->page+$number-$DStart) - $this->pageToatl;
$forStop = $this->pageToatl+1;
}else{
$DStop = 0;
$forStop = $this->page+$number-$DStart+1;
}
$forStart = $this->page-$number-$DStop<1?1:$this->page-$number-$DStop;
for($i=$forStart;$i<$forStop;++$i){
if($i==$this->page){
$numberF .= '<span class="current">'.$i.'</span>';
}else{
$numberF .= '<a href="'.$this->uri.'&'.$this->pageParam.'='.$i.'">'.$i.'</a>';
}
}
}
if($pageD!==false){
$number = $this->pageNumber;
$forStart = $this->page-$number>0?$this->page-$number:1;
$forStop = $this->page+$number>$this->pageToatl?$this->pageToatl+1:$this->page+$number+1;
for($i=$forStart;$i<$this->page;++$i){
$numberD .= '<a href="'.$this->uri.'&'.$this->pageParam.'='.$i.'">'.$i.'</a>';
}
$numberD .= '<span class="current">'.$this->page.'</span>';
$start = $this->page+1;
for($i=$start;$i<$forStop;++$i){
$numberD .= '<a href="'.$this->uri.'&'.$this->pageParam.'='.$i.'">'.$i.'</a>';
}
}
$F = $forStart>1?'<a href="'.$this->uri.'&'.$this->pageParam.'=1">1</a>':'';
$E = $forStop<$this->pageToatl+1?'<a href="'.$this->uri.'&'.$this->pageParam.'='.$this->pageToatl.'">'.$this->pageToatl.'</a>':'';
if($forStart>2){
$omitF = '<span class="omit">…</span>';
$startA = $this->page-$number<1?1:$this->page-$number;
$omitFA = '<a class="omit" href="'.$this->uri.'&'.$this->pageParam.'='.$startA.'">…</a>';
}
if($forStop<$this->pageToatl){
$omitE = '<span class="omit">…</span>';
$stopA = $this->page+$number>$this->pageToatl?$this->pageToatl:$this->page+$number;
$omitEA = '<a class="omit" href="'.$this->uri.'&'.$this->pageParam.'='.$stopA.'">…</a>';
}
}
$this->pageType = str_ireplace(array('%F%','%E%','%omitFA%','%omitEA%','%omitF%','%omitE%','%numberF%','%numberD%'),array($F,$E,$omitFA,$omitEA,$omitF,$omitE,$numberF,$numberD),$this->pageType);
}
/**
*处理url的方法
* @access public
* @param array $url 保持URL直对关系数组
* @return string 过滤后的url尾参数
*/
private function uri(){
$url = $_SERVER["REQUEST_URI"];
$par = parse_url($url);
if (isset($par['query'])) {
parse_str($par['query'],$query);
if(!is_array($this->uri)){
$this->uri = array();
}
array_merge($query,$this->uri);
unset($query[$this->pageParam]);
while($key = array_search('',$query)){
unset($query[$key]);
}
$this->uri = $par['path'].'?'.http_build_query($query);
}else{
$this->uri = $par['path'].'?';
}
}
/**
* 设置limit方法及计算起始条数和结束条数
*/
private function calculate(){
$this->pageToatl = ceil($this->total/$this->pageSize);
$this->page = intval($_GET[$this->pageParam]);
$this->page = $this->page>=1?$this->page>$this->pageToatl?$this->pageToatl:$this->page:1;
$this->pageStart = ($this->page-1)*$this->pageSize;
$this->pageStop = $this->pageStart+$this->pageSize;
$this->pageStop = $this->pageStop>$this->total?$this->total:$this->pageStop;
$this->limit = $this->pageStart.','.$this->pageStop;
}
/**
* 设置过滤器
*/
public function __set($name,$value){
switch($name){
case 'pageType':
case 'uri':
$this->$name = $value;
return;
case 'pageShow':
if(is_array($value)){
$this->pageShow = array_merge($this->pageShow,$value);
}
return;
}
}
/**
* 取值过滤器
*/
public function __get($name){
switch($name){
case 'limit':
case 'pageStart':
case 'pageStop':
return $this->$name;
default:
return;
}
}
}
