为什么通过构造函数传进来的参数，执行函数后前后不一致?

Question

CurrentPage类<?php
class CurrentPage{
    //basic element
    var $totalRecords;
    var $currentPage;
    var $pageRecords;
    var $totalPages;
    
    //extension element
    var $currentConn;
    var $qSQL;
    public function __construct($conn,$pSQL,$pageSize,$pagenumber){
      if(is_object($conn)){
          $this->currentConn=$conn;
      }
      $this->qSQL=$pSQL;
      $this->pageRecords=$pageSize;
$this->currentPage=$pagenumber;
    }
  
    private function getTotalRecords(){   
try{
        $result=mssql_query($this->qSQL);
        if(($currTotal=mssql_num_rows($result))>0){
            $this->totalRecords=$currTotal;
        }else{
         die("connection fail");
exit;
        }
}catch(Exception $e){
print $e->getMessage();
}
    }
  
  public function getTotalPages(){
     if(isset($this->totalRecords) && isset($this->pageRecords)){
       if($this->totalRecords % $this->pageRecords ==0){
         $this->totalPages=$this->totalRecords / $this->pageRecords;
       }else{
         $this->totalPages=intval($this->totalRecords / $this->pageRecords +1);
       }
     }else{
       $this->getTotalRecords();
     } 
 return $this->TotalPages;
  }
  
  private function getCurrentPage(){  
   
      if($this->currentPage<=1){
        $this->currentPage=1;
      }
if($this->currentPage >= $this->getTotalPages()){
        $this->currentPage=$this->getTotalPages();
      }
     if(!isset($this->currentPage)){
       $this->currentPage=1;
}
     
return $this->currentPage;
  }  public function showRecordSet(){  
    $strStart=($this->getCurrentPage()-1) * $this->pageRecords;
    $strEnd=$this->getCurrentPage() * $this->pageRecords;

    $currArray=array();
  $tempResult=mssql_query($this->qSQL);
    if(mssql_data_seek($tempResult,$strStart)){
  for($i=$strStart;$i<$strEnd;$i++){
$row=mssql_fetch_object($tempResult);
       array_push($currArray,$row);
}
return $currArray;   
    }    
  }
public function getPageInfo(){
    //print_r("connection info: ".$this->currentConn."<br>");
      //print_r("call sql statement: ".$this->qSQL."<br>");
      print_r("define records: ".$this->pageRecords."<br>");
print_r("construcctor current page: " .$this->currentPage."<br>");
print_r("get current page: " .$this->getCurrentPage()."<br>");
print "total records:{$this->totalRecords}<br>";
    print "total pages:{$this->totalPages}<br>";
}
}
?>调用代码: $tSQL="SELECT DISTINCT e1.AccountName AS accountName, e2.AccountID
 FROM t_Character e2 INNER JOIN
       t_User e1 ON e2.AccountID = e1.AccountID";   

$pageRecord=new CurrentPage($connSQLSERVER,$tSQL,$strPageSize,$pageNumber);
print $pageRecord->getPageInfo();   

$arrTemp=$pageRecord->showRecordSet();
print $pageRecord->getPageInfo();

for($i=0;$i<count($arrTemp);$i++){
print $arrTemp[$i]->accountName."<br>";
}输出:
connection info: 
define records: 100
construcctor current page: 2
get current page: 1
total records:111623
total pages:1117
connection info: 
define records: 100
construcctor current page: 1
get current page: 1
total records:111623
total pages:1117