我的一个php_mysql分页类

mysql|分页

class RSPage {
  var $Debug    =  0;
  var $sqoe     =  1; // sqoe= show query on error
  var $Link_ID    = 0;
  var $Record    = array();
  var $Row;
  var $numRow;
  var $Parse;
  var $Error     = "";
  var $m_timeFmt = "YYYY-MM-DD HH24:MI:SS";

    var $m_num=-1;
    var $m_sql;
    var $m_pageSize=10;
    var $m_cmt;
    var    $m_curPage=1;
    function open($DB_Link)
    {
        $this->Link_ID = $DB_Link;
    }

    function query($Query_String,$page=1,$cnt=-1,$size=10) {
      if($Query_String=="")
      {
          echo "执行语句不能为空！";
          return false;
      }
        if(!$page)
            $page = 1;
        if(!$cnt)
            $cnt = -1;
        $this->m_pageSize = $size;

      if($this->Parse){
          mysql_free_result($this->Parse);
      }

        if($cnt!=-1){
            $this->m_num = $cnt;
        }
        else{
            $result = mysql_query($Query_String, $this->Link_ID);
            if(!$result){
                $this->Error=mysql_error($this->Link_ID);
            }
            else{
                $this->m_num = mysql_num_rows($result);
            }
            /*
            $cntsql = "select count(*) max_num from ($Query_String)";
            $maxnum = 0;
            $result = mysql_query($sqlstr,$this->Link_ID);
            $ret = mysql_fetch_array($result);
            mysql_free_result($result);
            if(!$ret) {
                $this->Error=mysql_error($this->Link_ID);
            }
            else {
                $this->m_num = $ret["max_num"];
            }
            */
            
        }
        $pageCount = $this->getPageCount();
        $pageSize = $this->getPageSize();
        if($page>$pageCount)$page=$pageCount;
        if($page        $this->m_curPage=$page;
        $posBegin = ($page-1)*$pageSize;
        $posEnd = $posBegin + $pageSize;
        $Query_String = "$Query_String LIMIT $posBegin,$posEnd";
        $this->Parse=mysql_query($Query_String,$this->Link_ID);

      if(!$this->Parse) {
           $this->Error=mysql_error($this->Link_ID);
      }
      $this->Row=0;

      if($this->Debug) {
          printf("Debug: query = %s
\n", $Query_String);
      }

      if ($this->Error && $this->sqoe)
      echo "
".$this->Error["message"]."
Query :\"$Query_String\"";
      $numRow=mysql_num_rows($this->Parse);
      return $this->Parse;
  }
  function setTimeFormat($timestr){
    $this->m_timeFmt = $timestr;
  }
  function next_record() {
      if(!($row = mysql_fetch_array($this->Parse))) {
          mysql_free_result($this->Parse);
          $this->Parse = false;
          $stat=0;
      }
      else {
          while(list($key,$val)=each($row)) {
              $colreturn=strtolower($key);
              $this->Record[ "$colreturn" ] = $val;
              if($this->Debug) echo"[$key]:".$val."
\n";
          }
          $stat=1;
      }

    return $stat;
  }
  
  function record_exist() {
    if(0 == mysql_num_rows($this->Parse)) {
                return 0;
          } else {
                return 1;
      }

  return $stat;
  }

  function seek($pos) {
      $this->Row=$pos;
  }

  function affected_rows() {
    return mysql_affected_rows($this->Parse);
  }

  function num_rows() {
          return mysql_num_rows($this->Parse);
  }

  function f($Name) {
    return $this->Record[$Name];
  }

  function p($Name) {
    print $this->Record[$Name];
  }

  function close() {
      if($this->Debug) {
          //printf("Disconnecting...
\n");
      }
      if($this->Parse){
          mysql_free_result($this->Parse);
      }
      //mysql_close($this->Link_ID);
  }

  //---public 得到当前页
    function getCurPage(){return $this->m_curPage;}
    //---public 设定页长
    function setPageSize($page_size){$this->m_pageSize = $page_size;}
    //---public 得到页长
    function getPageSize(){return $this->m_pageSize;}
    //---public 得到纪录总数
    function getCount(){return $this->m_num;}
    //---public 得到页总数
    function getPageCount(){
        $page=floor($this->getCount()/$this->getPageSize());
        if($this->getCount()%$this->getPageSize()>0)$page++;
        return $page;
    }
    // 显示导航条。
    // 参数说明： $url    调用页面ex:http://hello.php?showtype=main
    function show_navibar($recname="条记录",$first="首页",$pre="上页",$next="下页",$last="末页"){
        $showurl = getenv("REQUEST_URI");
        $tmppos = strpos($showurl,"&rscnt=");
        if(!$tmppos)
            $tmppos = strpos($showurl,"?rscnt=");
        if($tmppos)
            $showurl = substr($showurl,0,$tmppos);
        $url = $showurl;
        $page = $this->getCurPage();
        $pagecnt = $this->getPageCount();
        $cnt = $this->getCount();
        if($cnt             return;
        
        if(!strrchr($url,"?"))
            $url = $url."?";
        else                            // url已经带了参数。
            $url = $url."&";
        
        $url = $url."rscnt=".$cnt."&page=";
        
        if($page>1){
            ?>
1>=$first?> >=$pre?>
            
        }
        else{
            ?>
            =$first?> =$pre?>
            
        }
        
        if($page            ?>
>=$next?> >=$last?>
            
        }
        else{
            ?>
            =$next?> =$last?>
            
        }
        ?>
        共有 =$cnt?> =$recname?>,当前=$page?>/=$pagecnt?> 
        第>页
        
        
        

    }
}