PHP分页类的问题

Question

在网上看到一个PHP分页类,拿下来改了改,可总是有问题,提示也看不出个所以然来,请大家帮忙看看!
提示function Pager($conn, $sql, $pageNo, $pagesize){这一行有错误
代码如下: 
<?php
// +----------------------------------------------------------------------
// | 分页类pager.class.php
// +----------------------------------------------------------------------// 禁止直接访问该页面
if (basename($HTTP_SERVER_VARS['PHP_SELF']) == "pager.class.php") {
       header("HTTP/1.0 404 Not Found");
}class Pager{
       var $infoCount=0;//总信息数
       var $pageCount;//总页数
       var $pagesize;//每页显示条数
       var $pageNo;//当前页码
       var $startPos;//查询的起始位置Position
       var $nextPageNo;//下一页页码
       var $prevPageNo;//上一页页码
       var $sql;//要执行的SQL语句
       var $conn;//连接对象
       
       function Pager($conn, $sql, $pageNo, $pagesize){
              $this->infoCount=$this->getTotalNum();
              $this->pagesize=$pagesize;
              $this->pageNo=$pageNo;
              $this->sql=$sql;
              $this->conn=$conn;
              $this->pageCount=$this->GetPageCount();
              $this->AdjustPageNo();
              $this->startPos=$this->GetStartPos();
              $this->querySQL();
              $this->ShowBar();
       }
       
       function getTotalNum(){
              $rs=$this->conn->Execute($this->sql);
              return $rs->RecordCount();
        }
       
       function getArray(){
              $this->sql.= " limit ".$this->getLimitStart().",".$this->pagesize;
              $rs=$this->conn->Execute($this->sql);
              $arr=$rs->GetArray();
              return $arr;
       }
          
       function getLimitStart(){//SQL里 LIMIT start
              return ($this->pageNo-1)*$this->pagesize; 
       }        function AdjustPageNo(){//保证当前页码的有效性
              if($this->pageNo == '' || $this->pageNo < 1)
              $this->pageNo = 1;
              if ($this->pageNo > $this->pageCount)
              $this->pageNo = $this->pageCount;
       }
       
       function GoToNextPage(){//得到下一页
              $nextPageNo=$this->pageNo+1;
              if ($nextPageNo>$this->pageCount){
                     $this->nextPageNo=$this->pageCount;
                     return false;
              }
              $this->nextPageNo=$nextPageNo;
              return true;
       }
       
       function GotoPrevPage(){//得到上一页
              $prevPageNo=$this->pageNo-1;
              if ($prevPageNo<1){
                     $this->prevPageNo=1;
                     return false;
              }
              $this->prevPageNo=$prevPageNo;
              return true;
       }
       
       function GetPageCount(){//得到总页数
              return ceil($this->infoCount/$this->pagesize);
       }
       
       function GetStartPos(){//计算起始记录
              return ($this->pageNo-1)*$this->pagesize;
       }
       
       function ShowBar(){
              if($this->pageCount>0 && $this->pageCount<10){
                     $this->pageStart=1;
                     $this->pageEnd=$this->pageCount;
              }else{
                     $this->pageStart=$this->pageNo-5;
                     $this->pageEnd=$this->pageNo+4;
                     if($this->pageStart<=0){
                            $this->pageStart=1;
                            $this->pageEnd=10;
                     }
                     if($this->pageEnd>=$this->pageCount){
                            $this->pageStart=$this->pageCount-10;
                            $this->pageEnd=$this->pageCount;
                     }
              }
              for($i=$this->pageStart;$i<=$this->pageEnd;$i++){
                     if($i==$this->pageNo){
                            $this->pageTmp .= " <font color='#999999'>". $i ."</font> ";
                     }else{
                            $this->pageTmp .= " <a href='". $this->pageUrl . $i ."'>". $i ."</a> ";
                     }
              }
              $barHtmls = "";
              $barHtmls .= "<TABLE width='98%' align='right' cellpadding='0'>";
                     $barHtmls .= "<TBODY>";
                       $barHtmls .= "<TR>";
                            $barHtmls .= "<TD width='250' align='right'>共&nbsp;".$this->pageCount."页&nbsp;&nbsp;".$this->infoCount."条记录&nbsp;&nbsp;当前第".$this->pageNo."页&nbsp;&nbsp;&nbsp;</TD>";
                            $barHtmls .= "<TD align='right'><a href='".$this->pageUrl."1'>首页</a>";
                            if($this->pageNo>1){
                                   $barHtmls .= " <a href='".$this->pageUrl . $this->pageNo-1 ."'>上一页</a>";
                            }else{
                                   $barHtmls .= " <font color='#999999'>上一页</font>";
                            }
                            $barHtmls .= $this->pageTmp;
                            if($this->pageNo<$this->pageCount){
                                   $barHtmls .= " <a href='".$this->pageUrl . $this->pageNo+1 ."'>下一页</a>";
                            }else{
                                   $barHtmls .= " <font color='#999999'>下一页</font>";
                            }
                            $barHtmls .= " <a href='".$this->pageUrl . $this->pageCount ."'>尾页</a> </TD>";
                            $barHtmls .= "<TD align=right width=75><input name='pageNow' type='text' id='pageNow' size='3' maxlength='4' value='".$this->pageNo."' style='width:25px;text-align: center;' onKeyDown=if(event.keyCode=='13'){location='". $this->pageUrl ."'+document.getElementById('pageNow').value}><input type='button' name='Submit' value='GO' onClick=location='". $this->pageUrl ."'+document.getElementById('pageNow').value></TD>";
                       $barHtmls .= "</TR>";
                     $barHtmls .= "</TBODY>";
              $barHtmls .= "</TABLE>";
              return $barHtmls;
       }
}
?>

Answer 1

错误提示如下:Warning: Missing argument 1 for Pager::Pager() in D:\www\includes\pager.class.php on line 22Warning: Missing argument 2 for Pager::Pager() in D:\www\includes\pager.class.php on line 22Warning: Missing argument 3 for Pager::Pager() in D:\www\includes\pager.class.php on line 22Warning: Missing argument 4 for Pager::Pager() in D:\www\includes\pager.class.php on line 2222行也就是 function Pager($conn, $sql, $pageNo, $pagesize){//这一行有错误

Answer 2

我直接require_once到需要的文件里,不实例化也不应该出错啊

Answer 3

操作对象的地方，找到这一行代码 Pager::Pager()  
检查输入变量

Answer 4

function Pager($conn, $sql, $pageNo, $pagesize)
就是构造函数,在new Pager()时要带上４个参数．

Answer 5

运用了adodb for php。你要把adodb.inc.php文件包括进来。刚好，我正要一个分页的类。保存一下，晚上在看一看。

Answer 6

你的错误提示就是对象创建时没有带入参数。
另外，我看了一下。这个类有很多错误，首先构造函数
function Pager($conn, $sql, $pageNo, $pagesize){
              $this->infoCount=$this->getTotalNum();
              $this->pagesize=$pagesize;
              $this->pageNo=$pageNo;
              $this->sql=$sql;
              $this->conn=$conn;
              $this->pageCount=$this->GetPageCount();
              $this->AdjustPageNo();
              $this->startPos=$this->GetStartPos();
              $this->querySQL();
              $this->ShowBar();
       }
有很大问题。需要修改成
function Pager($conn, $sql, $pageNo, $pagesize){
              
              $this->pagesize=$pagesize;
              $this->pageNo=$pageNo;
              $this->sql=$sql;
              $this->conn=$conn;
$this->infoCount=$this->getTotalNum();
              $this->pageCount=$this->GetPageCount();
              $this->AdjustPageNo();
              $this->startPos=$this->GetStartPos();
              $this->querySQL();
              $this->ShowBar();
       }

Answer 7

我的这个简单需要
include("adodb/adodb.inc.php");
include("adodb/tohtml.inc.php");<?phpclass page{
var $conn;
var $rs;
var $sql;
var $numPage;//每一页显示多少个记录
var $currPage;//当前页

function __construct($conn,$sql,$numPage,$currPage){
$this->conn=$conn;
$this->sql=$sql;
$this->numPage=$numPage;
$this->currPage=$currPage;
}
function getRecordSet(){
$this->rs=$this->conn->PageExecute($this->sql, $this->numPage, $this->currPage);
return $this->rs;
}
function showBar(){
$rs=$this->getRecordSet();
$tempStr="";
if (!$rs->EOF && (!$rs->AtFirstPage() || !$rs->AtLastPage())) {
        if (!$rs->AtFirstPage()) {
         $tempStr.="<a href=";
         $tempStr.=$_SERVER['PHP_SELF']."?page=";
         $tempStr.=$rs->AbsolutePage() - 1 .">Previous  page</a>";
        }
        if (!$rs->AtLastPage()) {
         $tempStr.="<a href=";
         $tempStr.=$_SERVER['PHP_SELF']."?page=";
         $tempStr.=$rs->AbsolutePage() + 1 .">Next page</a>";
        } }
return $tempStr; }
}
if (isset($_GET['page'])) $curr_page = ($_GET['page']);
$pageObj=new page(getConn(),"select id,userName from userdb",1,$curr_page);
$rs=$pageObj->getRecordSet();
rs2htmlWithEdit($rs,'border=1 cellpadding=3',array('操作','用户名'),"modUser.php?","doDel.php?tableId=3&");
print $pageObj->showBar();
?>