/**
 * 一个简单的PHP分页类代码
 *
 * @param 
 * @arrange 512-笔记网： jb51.cc
 **/
 class Page {
  private $total; //数据表中总记录数
  private $listRows; //每页显示行数
  private $limit;
  private $uri;
  private $pageNum; //页数
  private $config=array('header'=>"个记录","prev"=>"上一页","next"=>"下一页","first"=>"首 页","last"=>"尾 页");
  private $listNum=8;
  /*
   * $total 
   * $listRows
   */
  public function __construct($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.",{$this->listRows}";
  }
  private function getUri($pa){
   $url=$_SERVER["REQUEST_URI"].(strpos($_SERVER["REQUEST_URI"],'?')?'':"?").$pa;
   echo $url;
   $parse=parse_url($url);
   if(isset($parse["query"])){
	parse_str($parse['query'],$params);
	unset($params["page"]);
	$url=$parse['path'].'?'.http_build_query($params);
   }
   return $url;
  }
  private function __get($args){
   if($args=="limit")
	return $this->limit;
   else
	return null;
  }
  private function start(){
   if($this->total==0)
	return 0;
   else
	return ($this->page-1)*$this->listRows+1;
  }
  private function end(){
   return min($this->page*$this->listRows,$this->total);
  }
  private function first(){
   if($this->page==1)
	$html.='';
   else
	$html.="&nbsp;&nbsp;<a href="{$this->uri}&page=1">{$this->config["first"]}</a>&nbsp;&nbsp;";
   return $html;
  }
  private function prev(){
   if($this->page==1)
	$html.='';
   else
	$html.="&nbsp;&nbsp;<a href="{$this->uri}&page='.($this->page-1).'">{$this->config["prev"]}</a>&nbsp;&nbsp;";
   return $html;
  }
  private function pageList(){
   $linkPage="";
   $inum=floor($this->listNum/2);
   for($i=$inum; $i>=1; $i--){
	$page=$this->page-$i;
	if($page<1)
	 continue;
	$linkPage.="&nbsp;<a href="{$this->uri}&page={$page}">{$page}</a>&nbsp;";
   }
   $linkPage.="&nbsp;{$this->page}&nbsp;";
   for($i=1; $i<=$inum; $i++){
	$page=$this->page+$i;
	if($page<=$this->pageNum)
	 $linkPage.="&nbsp;<a href="{$this->uri}&page={$page}">{$page}</a>&nbsp;";
	else
	 break;
   }
   return $linkPage;
  }
  private function next(){
   if($this->page==$this->pageNum)
	$html.='';
   else
	$html.="&nbsp;&nbsp;<a href="{$this->uri}&page='.($this->page+1).'">{$this->config["next"]}</a>&nbsp;&nbsp;";
   return $html;
  }
  private function last(){
   if($this->page==$this->pageNum)
	$html.='';
   else
	$html.="&nbsp;&nbsp;<a href="{$this->uri}&page='.($this->pageNum).'">{$this->config["last"]}</a>&nbsp;&nbsp;";
   return $html;
  }
  private function goPage(){
   return '&nbsp;&nbsp;<input style="WIDTH: 25px" value="'.$this->page.'"><input value="GO" type="button">&nbsp;&nbsp;';
  }
  function fpage($display=array(0,1,2,3,4,5,6,7,8)){
   $html[0]="&nbsp;&nbsp;共有<strong>{$this->total}</strong>{$this->config["header"]}&nbsp;&nbsp;";
   $html[1]="&nbsp;&nbsp;每页显示<strong>".($this->end()-$this->start()+1)."</strong>条，本页<strong>{$this->start()}-{$this->end()}</strong>条&nbsp;&nbsp;";
   $html[2]="&nbsp;&nbsp;<strong>{$this->page}/{$this->pageNum}</strong>页&nbsp;&nbsp;";
   $html[3]=$this->first();
   $html[4]=$this->prev();
   $html[5]=$this->pageList();
   $html[6]=$this->next();
   $html[7]=$this->last();
   $html[8]=$this->goPage();
   $fpage='';
   foreach($display as $index){
	$fpage.=$html[$index];
   }
   return $fpage;
  }
 }
/***   来自编程之家 jb51.cc（jb51.cc）   ***/