ページング・リストの幅を制御するページング・クラス

ページングクラスを書いたので役に立つならみんなで持って行って使いましょう

<?php
header('Content-Type:text/html; charset=utf-8');
/**
 *    
 * @author lizhiqiang
 * @version 1.1
 */
class DataPage{
	
	//    
	var $PageNo = 1;
	//    
	var $TotalCount = 0;
	//      
	var $PageSize = 0;
	//    
	var $list_len=0;
	//    
	var $page_list="";
	
	//    
	function __construct($pageno,$totalcount,$list_len,$pagesize)
	{
		$this->PageNo = $pageno;
		$this->TotalCount = $totalcount;
		$this->list_len = $list_len;
		$this->PageSize = $pagesize;
	}
	
	function ShowPage()
	{
		$pagenext = $this->PageNo+1;
		$pagebefore = $this->PageNo-1;
		$pagecount = ceil($this->TotalCount/$this->PageSize);
		if($this->PageNo!=1)
		{
			$this->page_list  = "<a href='?page=1'>  </a>";
			$this->page_list .= "<a href='?page=$pagebefore'>   </a>";
		}
		if($this->PageNo!=$pagecount&&$pagecount>0)
		{
			$this->page_list .= "<a href='?page=$pagenext'>   </a>";
			$this->page_list .= "<a href='?page=$pagecount'>  </a>";			
		}
		//      
		$total_list = $this->list_len*2+1;

		if($this->PageNo >= $total_list)
		{
			$j = $this->PageNo - $this->list_len;
			$total_list = $this->PageNo+$this->list_len;
			if($total_list>$pagecount)
			{
				$total_list = $pagecount;
			}
		}
		else
		{
			$j=1;

			if($total_list>$pagecount)
			{
				$total_list = $pagecount;
			}
		}
		$toppage = '<ul>';
		$footpage = '</ul>';
		$num_list=null;
		for ($j;$j<=$total_list;$j++)
		{
			if($this->PageNo == $j)
			{
				$num_list.="<li><a href='#' class='y'>".$j."</a></li>";
			}
			else
			{
				$num_list.="<li><a href='?page=".$j."'>".$j."</a></li>";
			}
		}
		$this->page_list .= $toppage.$num_list.$footpage;
		return $this->page_list;
	}
	
}

$_GET['page']!=null ? $page = $_GET['page'] :  $page =1;
$datapage = new DataPage($page,500,5,10);
echo $datapage->ShowPage();
?>