PHP完美分页类

class page{

private $total; //数据表中总记录数

private $listrows; //每页显示行数

private $limit;

private $uri; //自动获取url请求地址

private $pageNum; //总页数

private $config = array('header'=>'条记录','prev'=>'上一页','next'=>'下一页','first'=>'首页','last'=>'尾页');

public function __construct($total,$listrows=10,$pa=""){

$this->total = $total;

$this->listrows = $listrows;

$this->uri = $this->getUri($pa);

$this->page = !empty($_GET['page']) ? $_GET['page']:1 ;

$this->pageNum = ceil($this->total/$this->listrows);

$this->limit = $this->setLimit();

}

private function setLimit(){

return "limit ".($this->page-1)*$this->listrows.','.$this->listrows;

}

public function getUri($pa){

$url = $_SERVER['REQUEST_URI'].(strpos($_SERVER['REQUEST_URI'],'?')?'':"?").$pa;

$parse = parse_url($url); //返回一个数组，数组有元素query和path

if(isset($parse['query'])){

parse_str($parse['query'],$params); //将query中的参数解析到$params，为数组

unset($params['page']);

$url = $parse['path'].'?'.http_build_query($params); //按照指定的参数生成一个请求字符串

}

return $url;

}

//limit为私有属性，通过这个魔术方法使limit变得可用

private function __get($args){

if($args=="limit"){

return $this->limit;

}else{

return null;

}

}

private function first(){

if($this->page==1){

$html.='';

}else{

$html.=" {$this->config['first']} ";

}

return $html;

}

private function prev(){

if($this->page==1){

$html.='';

}else{

$html.=" {$this->config['prev']} ";

}

return $html;

}

private function pagelist(){

$linkPage='';

//每边显示inum个页码

$inum = 3;

//左边的页码

for($i=$inum;$i>=1;$i--){

$page = $this->page-$i;

if($page<1){

continue;

}else{

$linkPage.=" {$page} ";

}

}

//当前页码

$linkPage.=" {$this->page} ";

//右边页码

for($i=1;$i<=$inum;$i++){

$page = $this->page+$i;

if($page>$this->pageNum){

break;

}else{

$linkPage.=" {$page} ";

}

}

return $linkPage;

}

private function next(){

if($this->page==$this->pageNum){

$html.='';

}else{

$html.=" {$this->config['next']} ";

}

return $html;

}

private function last(){

if($this->page==$this->pageNum){

$html.='';

}else{

$html.=" {$this->config['last']} ";

}

return $html;

}

private function goPage(){

return '  

value="'.$this->page.'" style="width:25px" >

  ';

}

//*可见的成员方法

function fpage($arr=array(0,1,2,3,4,5,6,7)){

$html[0]=" 共有{$this->total}{$this->config['header']} ";

$html[1]=" {$this->page}/{$this->pageNum}页 ";

$html[2]=$this->first();

$html[3]=$this->prev();

$html[4]=$this->pageList();

$html[5]=$this->next();

$html[6]=$this->last();

$html[7]=$this->goPage();

$fpage='';

foreach($arr as $index){

$fpage.=$html[$index];

}

return $fpage;

}

}

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